Saufer Danfoss Load Sensing Steering Units

MAKING MODERN LIVING POSSIBLETechnical Information Load Sensing Steering Units OSPB/C/F/D/L LS, OLS Priority Valves, OSQ Flow Amplifiers powersolutions.danfoss.com Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Revision history Table of revisions 2 Date Changed Rev September 2014 Various updates EA February 2014 Converted to Danfoss layout - DITA CMS DA August 2013 OSPQ deleted CA November 2009 Steering column deleted BA May 2006 First version AA 11007611 • Rev EA • September 2014 Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Contents A wide range of Steering Components For hydrostatic steering systems Danfoss offers:................................................................................................................. 6 For electrohydraulic steering systems Danfoss offers:....................................................................................................... 6 Characteristic features for steering units:................................................................................................................................7 Characteristic features for electrohydraulic steering systems with OSPE and EHPS:.............................................. 7 Conversion factors........................................................................................................................................................................... 7 Survey of literature with technical data on Danfoss Steering Components...............................................................7 LS Steering Units OSPB, OSPC, OSPF, OSPD, OSPL Versions................................................................................................................................................................................................8 Load sensing................................................................................................................................................................................. 8 Load sensing static..................................................................................................................................................................... 8 Load sensing dynamic...............................................................................................................................................................8 Reaction..........................................................................................................................................................................................8 Non-reaction.................................................................................................................................................................................8 OSPB LS: Steering unit with no valve functions............................................................................................................... 8 OSPC LS: Steering unit load sensing with integrated valve functions for in line priority valve OLS............ 9 OSPC LS: Steering unit load sensing with integrated valve functions for flange on priority valve OLSA.........................................................................................................................................................................................9 OSPC LSR: Steering unit load sensing dynamic with integrated valve functions............................................. 10 OSPF LS : Steering unit full drain load sensing dynamic and with integrated valve functions....................10 OSPD LS: Steering unit load sensing dynamic with 2 rotary meters and with integrated valve functions.............................................................................................................................................................................. 11 OSPL LS:........................................................................................................................................................................................11 OSPBX LS, OSPCX LS and OSPLX LS: Steering units load sensing for flow amplifiers......................................13 Code numbers and weights.......................................................................................................................................................14 OSPB load sensing static non-reaction steering units................................................................................................ 14 OSPB load sensing dynamic non-reaction steering units..........................................................................................14 OSPC load sensing static non-reaction steering unit.................................................................................................. 15 OSPC load sensing dynamic non-reaction steering units..........................................................................................15 OSPC load sensing dynamic reaction steering units................................................................................................... 16 OSPF load sensing dynamic non-reaction steering units.......................................................................................... 16 OSPD load sensing non-reaction steering units............................................................................................................17 OSPL load sensing static non-reaction steering units.................................................................................................18 OSPL load sensing dynamic non-reaction steering units.......................................................................................... 18 OSPBX and OSPLX load sensing static steering units for OSQ static..................................................................... 19 OSPCX load sensing dynamic steering units for OSQ dynamic...............................................................................19 Specification table for non catalogue numbers of LS Steering Units......................................................................... 21 Technical data................................................................................................................................................................................. 22 Displacement, flow and pressure: OSPB LS, OSPC LS, OSPC LSR.............................................................................22 Displacement, flow and pressure: OSPF LS..................................................................................................................... 23 Displacement, flow and pressure: OSPD LS.................................................................................................................... 24 Displacement, flow and pressure: OSPL LS, OSPBX LS, OSPCX LS, OSPLX LS..................................................... 25 Valve functions in OSPC, OSPF, OSPD and OSPL LS steering units..............................................................................25 Pilot pressure relief valve; (P - T, Qp) characteristic......................................................................................................25 Shock valves............................................................................................................................................................................... 26 Suction valves............................................................................................................................................................................ 26 Check valves............................................................................................................................................................................... 27 Port thread versions for OSPB LS, OSPC LS/LSR, OSPF LS, OSPD LS/LSR, OSPL LS, OSPBX LS, OSPCX LS, OSPLX LS.............................................................................................................................................................................28 Dimensions.......................................................................................................................................................................................30 OSPB LS for OLS, OSPBX LS for OSQ...................................................................................................................................30 OSPC LS/LSR and OSPF LS for OLS, OSPCX LS for OSQ............................................................................................... 31 OSPD LS/LSR for OLS............................................................................................................................................................... 33 OSPL LS for OLS and OSPLX LS for OSQ............................................................................................................................34 OSPL 1200 LS for OLS.............................................................................................................................................................. 36 Valve Block OVPL Versions............................................................................................................................................................................................. 37 Code numbers and weight.........................................................................................................................................................38 11007611 • Rev EA • September 2014 3 ................................................................................................. 62 Pressure drop P-EF for OLS 320 dynamic priority valves............................................................ 48 OLS 320.......50 System sizing................... 42 Check valve................................................................. 48 OLSA 40/80........................................................................................................................................................................................................................................................ 82 Suction valves.............................................. 46 Code numbers and weight................................. 46 Dimensions...................................................................... 59 Pressure drop P-EF for OLSP static priority valves........79 Installation.........................................................................................................................................................63 OLS 160 and OLS 320..................................................................................................................... 79 Flow and pressure................................................................................................................................................... 79 Total displacement of Steering System................................................................................................................................................................................................................................................................................. 51 OLS/OLSA static priority valves for load sensing statics steering units.............................................................HT...........................................................................................51 OLS/OLSA static priority valves for load sensing static steering units....................................................................................................................................57 Pressure drop P-EF for dynamic priority valves........................................... OSQ Flow Amplifiers Contents Technical data...........76 OSQB/OLSQ dynamic flow amplifier for load sensing dynamics steering units......................................................................................................................................................................................................T........................................................................... 78 Technical data..46 Installation................................................................................................................................................................................................... 57 Pressure drop P-EF for static priority valves..............................................................................43 Installation....................................................................................................................................................................................................................................................... 42 Backpressure valve.....................................................56 Technical data.................................................................................................................................................................................................................................................................................................................. 51 OLS/OLSA dynamic priority valves for load sensing dynamic steering units................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Qp) characteristic............................................................................................................................................................................ OLS Priority Valves..................................................................................................................................................................................................................75 OSQB dynamic with OLSQ priority valve for emergency steering.................................................................................................................................................................47 Priority Valves OLSA and OLS Versions................................................................. 52 OLS/OLSA dynamic priority valves for load sensing dynamic steering units............................................................ 57 Pressure drop in priority valves....................................................................44 Angle Block OVR Version.......................... 75 OSQA and OSQB static..79 Valve functions in the flow amplifiers......................................................................................................................................................................................................................................................................................................................................................................................................................................79 Priority valve.................................................41 Shock valves.............................................................................................................. Qp) characteristics........................................................76 Code numbers and weights........................Technical Information OSPB/C/F/D/L LS Steering Units...................................................................................... 80 Back pressure valve.....................................................................................................................................................................................................................................................53 Specification table for non catalogue numbers of Danfoss Priority Valves............................................................... 82 4 11007611 • Rev EA • September 2014 ..........................................................................................................65 Flow Amplifiers OSQA...... 48 Load sensing static priority valves...................................................................................................................................................................... 63 Dimensions................................................................................................................................................................................................62 Pressure drop P-EF for OLS 320 static priority valves........................................................................................................................................................................................................................................................................................................ OSQB and OSQB/OLSQ Versions...................................... 50 Code numbers and weights.............................................................................................................80 OSQ pilot pressure relief valve (HP ...........76 OSQA and OSQB static flow amplifiers for load sensing static steering units.................. pilot pressure relief valve (P .......................... 82 Priority valve OLSQ for emergency circuit in OSQB/OLSQ................................................................................................. 57 Max............................................................................................................................... 41 Valve functions..... 42 Suction valves...............................................................................................................................................................................................76 Specification table for non catalogue numbers of Danfoss Flow Amplfiers............................................................. 41 Common data................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ pressure on connections................................................................................................................................................................................................................................ 43 Dimensions.................... 52 OLS dynamic priority valves for OSPF LS and OSPU LS dynamic steering units.....................................81 Shock valves............................................................ 61 Pressure drop P-EF for OLSP dynamic priority valves............48 Load sensing dynamic priority valves............................................................................ ..................................................................................................................................................................................................................................................................84 OSQA.................... OSQ Flow Amplifiers Contents Dimensions........................................................................................................................ 84 OSQB.............................................................................................................................................Technical Information OSPB/C/F/D/L LS Steering Units.......... 86 OSQB with OLSQ.......................................................................................................................................................................... 88 11007611 • Rev EA • September 2014 5 ......... OLS Priority Valves... 160 and 320 l/min [10. For electrohydraulic steering systems Danfoss offers: • • 6 Pilot operated steering valves (pilot operated by hydrostatic steering unit or by electrical signal) with steering flows up to 100 l/min [26. 31. steering pressure up to 250 bar [3625 psi] and with integrated priority valve for pump flow up to 120 l/min [31. 5.ranging from ordinary 2-wheel steering (also known as Ackermann steering) to articulated steering.2 in3/rev]. 11007611 • Rev EA • September 2014 .Technical Information OSPB/C/F/D/L LS Steering Units.3 and 84.7 US gal/ min]. Priority valves for rated flows at 40. 120. Pilot operated steering valve with steering flow up to 100 l/min [26. steering pressure up to 210 bar [3045 psi].5 US gal/ min]. 80. steering pressure up to 240 bar [3481 psi]. pressure up to 350 bar [5076 psi].4 US gal/min]. 42.g.4 US gal/min]. Steering units with integrated electrical operated steering valve with steering flow up to 50 l/min [13.7 US gal/min]. automatic steering (e.28 US gal/min].95 to 6. Danfoss offers steering solutions both at component and system levels. Our product range makes it possible to cover applications of all types . variants and sizes.800 different steering units and 250 different priority valves categorized in types. OLS Priority Valves.4 US gaL/min. flow up to 100 l/min [26.7. steering pressure up to 210 bar [3045 psi].2 US gal/min].1. OSQ Flow Amplifiers A wide range of Steering Components Danfoss is one of the largest producers in the world of steering components for hydrostatic steering systems on off-road vehicles. We can offer more than 1.4 and 105. Steering units with displacements from 40 to 1200 cm3/rev [2. steering pressure up to 140 bar [2030 psi]. flow up to 20 l/min [5. For hydrostatic steering systems Danfoss offers: • • • • • Mini steering units with displacements from 32 to 100 cm3/rev [1. 8. 10 or 20 for rated oil flows of 240 and 400 l/min [63. 21.10 in3/rev]. by sensor) and remote controlled steering via satellite.44 to 73. Pilot operated flow-amplifiers with amplification factors of 4.6. steering pressure up to 250 bar [3625 psi]. row sensor. OLS 320. OSQ Flow Amplifiers A wide range of Steering Components Characteristic features for steering units: • • • • • • Low steering torque: From 0.Technical Information OSPB/C/F/D/L LS Steering Units. OSPC. PVE for EHPS and OSPCX Technical data on combined steering unit/electrohydraulic steering valves and steering wheel sensors OSPE and SASA Technical data on load sensing steering unit with amplification OSPU For technical information on individual variants.264 US gal] 1 N = [0. EHPS w. OVPL.2248 lbf] 1 bar = [14. Power Beyond. priority valves and flow amplifiers OSPB.851 lbf•in] 1 l = [0. EHPS. Closed center Non-reaction. non-return valve in Pline and in LS-line Optional port connections (according to ISO. Load Sensing Reaction One or more built-in valve functions: relief valve. OLS Priority Valves.5 N•m to 3 N•m in normal steering situations Low noise level Low pressure drop Many types available: Open center Non-reaction. Load Sensing. OSPD. OSPL.8°C + 32] 1 cm3 = [0. variable steering ratio and joystick steering The possibility of manual steering even on very heavy vehicles EHPS: High steering pressure requiring smaller cylinders and flow EHPS: Low pilot pressure and flow giving extremely low noise in the cabin EHPS: Can be combined with Danfoss PVG 32 proportional valve Conversion factors 1 N•m = [8.061 in3] Survey of literature with technical data on Danfoss Steering Components Detailed data on all Danfoss steering components and accessories can be found in our steering component catalogues. electrical actuation modules and appropriate steering units. OSPC. OSPF. shock valves.0394 in] °F = [1. suction valves. OLS and OSQ Technical data on hydraulic and electrohydraulic pilot operated steering valves. SAE or DIN standards) Characteristic features for electrohydraulic steering systems with OSPE and EHPS: • • • • • Possibility of GPS. which is divided in to the following individual sub catalogues: General information Steering components Technical data on mini steering units OSPM Technical data on open center. and OSPD Technical data on load sensing steering units. OSPBX. and closed center steering units OSPB. please contact the Danfoss Sales Organization. OSPLX. Open center Reaction. 11007611 • Rev EA • September 2014 7 .5 psi] 1 mm = [0. Load sensing dynamic Load sensing dynamic steering units require load sensing dynamic priority valves and/or load sensing dynamic variable displacement pumps. OSQ Flow Amplifiers LS Steering Units OSPB. Load sensing static Load sensing static steering units require load sensing static priority valves and/or load sensing static variable displacement pumps. using a load sensing pump. OLS Priority Valves. OSPC. Load sensing steering units have an extra connection for load sensing (LS). The load sensing signal controls the oil flow from the priority valve (and/or the LS pump) to the steering unit. The LS connection is open to tank when the steering unit is in the neutral position. OSPD. also delivers the potential for energy saving. Load sensing static steering systems have no oil flow in the LS connection when the steering unit is in neutral position. Non-reaction With non-reaction steering units there is no corresponding movement of the steering wheel when the driver is not steering the vehicle OSPB LS: Steering unit with no valve functions Danfoss diagram R L CETOP diagram OSPB LS (OLS) Load sensing static non-reaction and load sensing dynamic non-reaction P LS T R L P T LS 150-301. OSPF.11 8 11007611 • Rev EA • September 2014 . Load sensing dynamic steering systems have a constant oil flow in the LS connection in the direction of the steering unit even when the steering unit is in neutral position.Technical Information OSPB/C/F/D/L LS Steering Units. Reaction With reaction steering units any external forces acting on the steered wheels result in a corresponding movement of the steering wheel when the driver is not steering the vehicle. OSPL Versions Load sensing In load sensing steering systems both the steering system and the working hydraulics can be supplied with oil from the same pump. so that a load pressure signal can be directed via the steering unit to a Danfoss priority valve and/or an LS pump. OSPC. OSQ Flow Amplifiers LS Steering Units OSPB. OSPF.11 OSPC LS: Steering unit load sensing with integrated valve functions for flange on priority valve OLSA OSPC LS (OLSA) Load sensing dynamic non-reaction L P T L P T LS R LS R 150-596.10 11007611 • Rev EA • September 2014 9 .Technical Information OSPB/C/F/D/L LS Steering Units. OSPD. OLS Priority Valves. OSPL OSPC LS: Steering unit load sensing with integrated valve functions for in line priority valve OLS OSPC LS (OLS) R L Load sensing dynamic non-reaction LS P T R L LS P T 150-595. OSPD.Technical Information OSPB/C/F/D/L LS Steering Units.11 OSPF LS : Steering unit full drain load sensing dynamic and with integrated valve functions OSPF LS (OLS) R L Load sensing dynamic non-reaction LS P T R L P T LS 150-597. OSPL OSPC LSR: Steering unit load sensing dynamic with integrated valve functions OSPC LSR (OLS) R L Load sensing dynamic reaction P LS T R L P T LS 150-598. OSQ Flow Amplifiers LS Steering Units OSPB. OLS Priority Valves.11 10 11007611 • Rev EA • September 2014 . OSPC. OSPF. OSPL OSPD LS: Steering unit load sensing dynamic with 2 rotary meters and with integrated valve functions The OSPD has 2 rotary meters (gear wheel sets). OSQ Flow Amplifiers LS Steering Units OSPB. In normal steering situations both rotary meters are active. OSPF.Load sensing static non-reaction R L P LS T R L P T LS 150-301. only one rotary meter is active for emergency steering. OLS Priority Valves. OSPD.11 OSPL LS: Steering unit load sensing for high steering flow.Technical Information OSPB/C/F/D/L LS Steering Units. L OSPD LS (OLS) R Load sensing dynamic non-reaction LS P T L R T P LS 150-599. OSPC. OSPL LS (OLS) . displacement larger than 500 cm3/rev [30.11 11007611 • Rev EA • September 2014 11 . Should the pump supply be lost.5 in3/rev]. 10 12 11007611 • Rev EA • September 2014 .10 OSPL 1200 (OLS) Load sensing dynamic nonreaction R L LS P T LS R L P T LS 150-613. OLS Priority Valves. OSQ Flow Amplifiers LS Steering Units OSPB. OSPC. OSPL OSPL LS (OLS) . OSPD.Load sensing dynamic nonreaction R L LS P T L R LS P T 150-601.Technical Information OSPB/C/F/D/L LS Steering Units. OSPF. Load sensing dynamic L R LS P T L R LS P T 150-602. OSPLX LS .12 OSPCX LS . OSPCX LS and OSPX LS can only be used with Danfoss flowamplifiers OSQA or OSQB. OSPBX LS. OSPCX LS and OSPX LS steering units must not be connected directly to the steering cylinder.Load sensing static L R P LS T L R P T LS 150-310. OSPC. OSQ Flow Amplifiers LS Steering Units OSPB. OSPCX LS and OSPLX LS: Steering units load sensing for flow amplifiers OSPBX LS.10 11007611 • Rev EA • September 2014 13 . OSPBX LS. OLS Priority Valves. OSPCX LS and OSPX LS are load sensing steering units with the L and the R connections open to tank when in neutral position. OSPD. OSPCX LS is for OSQ dynamic without pilot pressure relief valve. OSPBX LS. OSPL OSPBX LS.Technical Information OSPB/C/F/D/L LS Steering Units. OSPF. 5 [12.2 [11.67] OSPB 400 LS 150-0105 150-0117 7.90] OSPB 125 LS - 150G6088 5.O*) + S**) OSPB 50 LS - 150G6085 5. OSPF.8 [12.0 [15. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code Numbers Connections US version for OLS 3/4-16 UNF .46] OSPB 80 LS 150-8205 5.3 [11. OSPD. OSPL Code numbers and weights OSPB load sensing static non-reaction steering units OSPB LS Static steering units have no valve functions.68] OSPB 100 LS - 150G6087 5.3 [11. OSPB LS in the table below have all standard neutral setting springs.68] OSPB 100 LS 150-8206 5.O*) 7/16-20 UNF .43] *) O-ring chamfer on port connections **) Spot face around port connection Valve blocks OVP and OVR can be mounted on all of the OSPB steering units from the above table 14 11007611 • Rev EA • September 2014 .46] OSPB 80 LS - 150G6086 5. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code Numbers Weight kg [lb] Connections European version for OLS G 1/2 G 1/4 .13] OSPB 160 LS - 150G6089 5.35] OSPB 200 LS 150-8209 5.Technical Information OSPB/C/F/D/L LS Steering Units.43] *) O-ring chamfer on port connections **) Spot face around port connection Valve blocks OVP and OVR can be mounted on all of the OSPB steering units from the above table.2 [13. OSPB LS in the table below have all standard neutral setting springs.2 [11.2 [13.6 [12.4 [11.6 [12.S**) US version for OLS 3/4-16 UNF . OSQ Flow Amplifiers LS Steering Units OSPB.O*) 7/16-20 UNF .5 [12.4 [11.90] OSPB 125 LS 150-8207 5. OSPC. OSPB load sensing dynamic non-reaction steering units OSPB LS Dynamic steering units have no valve functions.67] OSPB 400 LS 150-8211 7.35] OSPB 200 LS 150-0103 150G6090 5. OLS Priority Valves.8 [12.79] OSPB 315 LS 150-8210 6.0 [15.O*) + S**) Weight kg [lb] OSPB 50 LS 150-8204 5.79] OSPB 315 LS 150-0104 150-0116 6.13] OSPB 160 LS 150-8208 5. 43] 5.8 [12.3 [11. OSPC.2 [11.S**) European and US version for OLSA US version for OLS 3/4-16 UNF . OSPD.2 [13.Technical Information OSPB/C/F/D/L LS Steering Units.46] 15 .O*)+S**) 150-8233 150-8222 150-8215 11007611 • Rev EA • September 2014 Weight kg [lb] 5. please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization.67] OSPC 400 LS 150-1240 - - 7. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit OSPC 50 LS Code numbers Valve settings Connections Relief valve bar [psi] Shock valve bar [psi] 140 [2030] 200 [2900] European version for OLS G 1/2 .S**) G 1/4 . OSQ Flow Amplifiers LS Steering Units OSPB.13] OSPC 160 LS 150-1233 150-1191 150-1219 5.6 [12.S**) European and US version for OLSA US version for OLS 3/4-16 UNF . see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code numbers Valve settings Connections Relief valve bar [psi] Shock valve bar [psi] 170 [2465] 225 [3263] Weight kg [lb] European for OLS G 1/2 G 1/4 .68] 5. valve combinations and/or other valve settings or other displacements.O*) 7/16-20 UNF .5 [12.O*) 7/16-20 UNF .4 [11.0 [15.90] *) O-ring chamfer on port connections **) Spot face around port connections If you require other port connections. OLS Priority Valves.35] OSPC 200 LS 150-1234 150-1192 150-1218 5.79] OSPC 315 LS 150-1235 - 150G6091 6. OSPC load sensing dynamic non-reaction steering units OSPC LS Dynamic steering units in the table below incorporate all the following valve functions: • check valve in P-port • • • • pilot pressure relief valve shock valves suction valves check valve in LS-line for all OSPC LS Dynamic up to and including 200 cm³/rev OSPC LS in the table below have all standard neutral setting springs.O*) + S**) OSPC 80 LS 150-1230 150-1188 150-1222 OSPC 100 LS 150-1231 150-1189 150-1221 OSPC 125 LS 150-1232 150-1190 150-1220 5. OSPL OSPC load sensing static non-reaction steering unit OSPC LS Static steering units in the table below incorporate all the following valve functions: • check valve in P-port • • • pilot pressure relief valve shock valves suction valves OSPC LS in the table below have all standard neutral setting springs. OSPF. OSPL Steering unit Code numbers Valve settings Connections Relief valve bar [psi] Shock valve bar [psi] 170 [2465] 225 [3263] Weight kg [lb] European version for OLS G 1/2 . OSPC load sensing dynamic reaction steering units OSPC LSR Dynamic steering units in the table below incorporate all the following valve functions: • check valve in P-port • • • • pilot pressure relief valve shock valves suction valves check valve in LS-line OSPC LSR in the table below have all standard neutral setting springs.S**) Relief valve bar [psi] Shock valve bar [psi] OSPC 80 LSR 150-8241 170 [2465] 225 [3263] OSPC 200 LSR 150-8242 Weight kg [lb] 5. OSPF load sensing dynamic non-reaction steering units OSPF LS Dynamic steering units in the table below incorporate all the following valve functions: 16 11007611 • Rev EA • September 2014 . please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization.79] **) Spot face around port connections (can not be used in connection with OVR angular block) If you require other port connections.8 [12.S**) European and US version for OLSA US version for OLS 3/4-16 UNF . OSPD.35] OSPC 200 LS 150-8238 150-8227 150-8220 5. OLS Priority Valves.3 [11. OSPF.68] 5.68] 5.4 [11.13] OSPC 160 LS 150-8237 150-8226 150-8219 5. OSPC.O*)+S**) 150-8234 150-8223 150-8216 OSPC 100 LS 150-8235 150-8224 150-8217 OSPC 125 LS 150-8236 150-8225 150-8218 5.8 [12.S**) G 1/4 . valve settings and/or other displacements.3 [11.43] OSPC 80 LS 5.79] OSPC 315 LS 150-8239 - 150-8221 6. valve combinations and/or other valve settings or other displacements please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization.5 [12. OSQ Flow Amplifiers LS Steering Units OSPB. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code numbers Valve settings Connections European version for OLS G 1/2 . valve combinations.0 [15.Technical Information OSPB/C/F/D/L LS Steering Units.6 [12.O*) 7/16-20 UNF .2 [13.90] **) Spot face around port connections *) O-ring chamfer on port connections If you require other port connections.S**) G 1/4 .67] OSPC 400 LS 150-8240 - - 7. OSPC.96] 7.1 [12. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code numbers Valve settings Weight kg [lb] Connections European version for OLS G 1/2 .9 [17. OSPL • • • • check valve in P-port pilot pressure relief valve shock valves suction valves OSPF LS in the table below have all soft neutral setting springs.79] OSPD 125/440 LS 11113147 8.43] 5.41] OSPD 70/385 LS 11113143 8.67] OSPF 400 LS 150G5085 7.5 [12.35] OSPF 200 LS 150G5083 5. OSPF.68] **) Spot face around port connections (can not be used in connection with OVR angular block) If you require other port connections.8 [12.0 [15. valve combinations.S**) G 1/4 .6 [12.52] OSPD 125/325 LS 11113146 8.S**) G 1/4 .3 [11.6 [18.4 [18.13] OSPF 160 LS 150G5082 5.4 [11.79] OSPF 315 LS 150G5084 6. please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization. OSPD.2 [13.S**) Relief valve bar [psi] Shock valve bar [psi] OSPD 70/230 LS 11113141 170 [2465] 225 [3263] OSPD 70/270 LS 11113142 7. OSQ Flow Amplifiers LS Steering Units OSPB.00] **) Spot face around port connections (can not be used in connection with OVR angular block) 11007611 • Rev EA • September 2014 17 .Technical Information OSPB/C/F/D/L LS Steering Units. valve settings and/or other displacements. OLS Priority Valves. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code numbers Valve settings Weight kg [lb] Connections European version G 1/2 .7 [17.S**) Relief valve bar [psi] Shock valve bar [psi] OSPF 80 LS 150G5079 170 [2465] 225 [3263] OSPF 100 LS 150G5080 5. OSPD load sensing non-reaction steering units OSPD LS Dynamic steering units in the table below incorporate all the following valve functions: • check valve in P-port • • • • pilot pressure relief valve shock valves suction valves check valve in LS-line OSPD LS in the table below have all standard neutral setting springs.90] OSPF 125 LS 150G5081 5. 8 [19. OSQ Flow Amplifiers LS Steering Units OSPB.4 [18. OSPL LS in the three tables below have all strong neutral setting springs.Technical Information OSPB/C/F/D/L LS Steering Units.O* + S**) OSPL 520 LS 150-7169 150-7167 150-7168 8.4 [18. OSPF. valve combinations.0 [22.86] 10.S**) Relief valve bar [psi] OSPL 520 LS 150-8244 170 [2465] OSPL 1000 LS 150-8245 **) Spot face around port connection 18 11007611 • Rev EA • September 2014 Weight kg [lb] 8.05] .O* + S**) US version for OLS and OVPL LS .0 [22.86] OSPL 630 LS 150-7107 150-7164 150-7113 8.1 [17. OSPC.40] OSPL 1000 LS 150-8214 10. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code numbers Weight kg [lb] Connections European version for OLS G 1/2 G 1/4 . valve settings and/or other displacements.8 [19.1 [17.O*)* 7/16-20 UNF . Steering unit Code numbers Weight kg [lb] Connections US version for OLS 3/4-16 UNF .S**) US version for OLS 3/4-16 UNF . OLS Priority Valves. OSPL If you require other port connections.0 [22.40] OSPL 1000 LS 150-7110 150-7166 150-7115 10.05] **) Spot face around port connection *) O-ring chamfer on port connections OSPL load sensing dynamic non-reaction steering units OSPL LS Dynamic steering units in the table below have no valve functions.port 7/16-20 UNF .O*) 7/16-20 UNF .1 [17.86] OSPL 630 LS 150-8212 8.O*)* +S**) OSPL 520 LS 150-8243 8.52] OSPL 800 LS 150-7108 150-7165 150-7114 8.52] OSPL 800 LS 150-8213 8. please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization. OSPL load sensing static non-reaction steering units OSPL LS Static steering units have no valve functions.05] *) O-ring chamfer on port connections **) Spot face around port connection OSPL LS Dynamic steering units in the table below incorporate all the following valve function: pilot pressure relief valve • Steering unit Code numbers Valve settings Connections European version for OLS and OVPL LS: G 1/4 . OSPD. OSPL 1200 LS Dynamic steering unit in the table below incorporate all the following valve function: • shock valves • suction valves OSPL 1200 LS in the table below has strong neutral setting springs.25] *) O-ring chamfer on port connections **) Spot face around port connection If you require other displacements or other valve setting.1 [17.2 [13.O*)* + S**) OSPBX 160 LS 150-1082 150-1078 5.20 UNF .52] OSPLX 800 LS 150-7172 150-7155 8. please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization.S**) US version 3/4-16 UNF . please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization. OSPC.8 [19.O*) 7/16-20 UNF .40] **) Spot face around port connection *) O-ring chamfer on port connections OSPCX load sensing dynamic steering units for OSQ dynamic OSPCX LS Dynamic steering unit in the table below incorporates the following valve function: • pilot pressure relief valve OSPCX LS in the table below has standard neutral setting springs.86] OSPLX 630 LS 150-7171 150-7174 8.16 UNF .67] OSPBX 400 LS 150-1085 150-1081 7.O*) CF: 11/16 . OSQ Flow Amplifiers LS Steering Units OSPB. OSPBX and OSPLX load sensing static steering units for OSQ static OSPBX LS and OSPLX LS Static steering units in the table below have no valve functions.43] OSPLX 520 LS 150-7170 150-7173 8. OSPF. OLS Priority Valves.6 [12.8 [12. see Specification Table for Non Catalogue Numbers of LS Steering Units OSPLX LS in the table below have all strong neutral setting springs.4 [18. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit OSPL 1200 LS Code numbers Valve settings Connections US version for OLS 3/4 . OSPL If you require other displacements or other valve setting.79] OSPBX 315 LS 150-1084 150-1080 6. OSPBX LS in the table below have all standard neutral setting springs.Technical Information OSPB/C/F/D/L LS Steering Units. OSPD.35] OSPBX 200 LS 150-1083 150-1079 5.12 UN 7/16 .0 [15. see Specification Table for Non Catalogue Numbers of LS Steering Units Steering unit Code numbers Weight kg [lb] Connections European version G 1/2 G 1/4 . see Specification Table for Non Catalogue Numbers of LS Steering Units 11007611 • Rev EA • September 2014 19 .O*)* + S**) Shock valves bar [psi] 150-7175 280 [4061] Weight kg [lb] 11 [24. please fill in the order form in the Specification Table for Non Catalogue Numbers of LS Steering Units and contact the Danfoss Sales Organization. OSPC.Technical Information OSPB/C/F/D/L LS Steering Units.S**) G ¼ . OSPF.35] **) Spot face around port connection If you require other displacements or other valve setting. OSPL Steering unit OSPCX 160 LS Code numbers Valve settings Connections European version for OLS and OVPL G ½ . OLS Priority Valves. OSPD. OSQ Flow Amplifiers LS Steering Units OSPB.6 [12.S**) Relief valve bar [psi] 150-8188 200 [2900] Weight kg [lb] 5. 20 11007611 • Rev EA • September 2014 . OSPLX G1/2 Relief valve*** bar 70 Shock valves bar 160 Suction valves Yes No Check valve in LS Yes (Only for OSPC dynamic and OSPD) No (Only for OSPC. cm³/rev OSPC LS OSPF LS 40 50 60 DP.S** M18 × 1.O* + S** 3/4-16 UNF . OSPF. OLS Priority Valves.1.4 Nm in normal steering situations No 11007611 • Rev EA • September 2014 21 . cm³/rev OSPL. cm³/rev OSPC LSR 40 DP. cm³/rev OSPD LSR 60/185 60/220 70/195 70/230 100/200 DP. OSPD) Load Sensing Static (Only OSPC. cm³/rev OSPCX 160 200 250 315 400 Port threads OSPC.O* For OPVL and without RV (LS = 7/16 .5 .S** Port threads OSPL. OSPCX) type Dynamic DP.O* for OLSA (only OSPC) Port threads OSPD G1/2. OSPL.8 .5 . OSPLX. Your company Name Steering unit type OSPC Vehicle OSPF Potential pcs/year Completed by OSPL OSPLX OSPD Date OSPCX Reaction type LS ( Non-reaction) LSR (Reaction: only OSPC. cm³/rev OSPD LS 60/185 DP. OSPF G1/2 G1/2.O* + S** 3/4-16 UNF .20 UNF) For OVPL and with RV (LS = G 1/4) 120 210 140 170 190 225 200 240 Standard: 0. OSPC. then send to your Danfoss Sales Organisation.8 Nm in normal steering situations Unit black painted Yes 50 60/220 70 80 60 60/260 70 70/195 3/4-16 UNF .Technical Information OSPB/C/F/D/L LS Steering Units.5 . OSPLX 520 630 800 1000 1200 (only OSPL) DP. OSPD. OSQ Flow Amplifiers LS Steering Units OSPB.5 . OSPF and OSPL) Neutral setting springs Soft: 0. OSPL Specification table for non catalogue numbers of LS Steering Units Fill in your company data and place x’s in the table where appropriate.O* 80 90 180 100 100 110 200 125 160 80 70/230 70/270 185 100 70/385 200 230 125 100/200 250 160 315 185 400 200 100/260 100/300 125/285 125/325 125/440 M18 × 1.3 Nm in normal steering situations no relief valve 280 no shock valves Strong: 1. Port and valve combinations.88] 8 [2.32] OSPC 60 LS Static 60 [3. Types not mentioned with port connections in the table above.58] OSPC 70 LS Static 70 [4.64] OSPB/OSPC 125 LS Static 125 [7.63] 13 [3. OSQ Flow Amplifiers LS Steering Units OSPB.66] 6 [1.41] 40 [10.05] 5 [1.Technical Information OSPB/C/F/D/L LS Steering Units.25] 25 [6.45] OSPB/OSPC 400 LS Static 400 [24.27] 7 [1. O*: O-ring chamfer on port connections. OLS Priority Valves.57] 11007611 • Rev EA • September 2014 175 [2538] 175 [2538] . OSPD.20] 20 [5. RV = Pilot pressure relief valve.07] OSPC 250 LS Static 250 [15.44] 4 [1. R bar [psi] OSPC 40 LS Static 40 [2. RV*** see Technical data for limitation in maximum pressure depending on displacements. Code number of basic steering unit: __________________________________________________ Requested modifications: ___________________________________________________________ Technical data Displacement.60] OSPB/OSPC 315 LS Static 315 [19. OSPC LS.76] 16 [4. S**: Spot face around port connections (can not be used in connection with OVR angular block).02] OSPB/OSPC 200 LS Static 200 [12. OSPL DP = Displacement. OSPC LSR Common data: Look in sub catalogue: “General Steering Components “ Steering unit 22 Displacement *Rated oil cm³/rev flow [in³/rev] l/min [US gal/min] Max. OSPF.28] OSPC 230 LS Static 230 [14.85] OSPB/OSPC 80 LS Static 80 [4.43] OSPB/OSPC 160 LS Static 160 [9.23] OSPC 185 LS Static 185 [11. flow and pressure: OSPB LS. pressure on connections P bar [psi] T bar [psi] L.29] 19 [5.06] 140 [2030] 40 [580] 280 [4061] OSPB/OSPC 50 LS Static 50 [3. are only available in the version(s) stated in the code number tables.10] 10 [2. An alternative way to specify a variant is to state an existing code number and add the modifications. OSPC. you would like to have implemented in the basic steering unit.11] OSPB/OSPC 100 LS Static 100 [6.03] 23 [6.22] 32 [8. 22] 32 [8.43] OSPC 160 LSR Dynamic 160 [9.27] 7 [1.32] OSPC 60 LS Dynamic 60 [3.58] OSPC 70 LS Dynamic 70 [4. OSQ Flow Amplifiers LS Steering Units OSPB.27] 7 [1.64] OSPB/OSPC 125 LS Dynamic 125 [7.88] 8 [2.28] 175 [2538] 210 [3045] 140 [2030] 175 [2538] 210 [3045] *Rated flow at 100 rpm Displacement.28] OSPC 230 LS Dynamic 230 [14.23] OSPC 185 LS Dynamic 185 [11.29] 19 [5.60] OSPB/OSPC 315 LS Dynamic 315 [19.06] 140 [2030] 40 [580] 280 [4061] OSPB/OSPC 50 LS Dynamic 50 [3.45] OSPB/OSPC 400 LS Dynamic 400 [24.43] OSPB/OSPC 160 LS Dynamic 160 [9. pressure on connections P bar [psi] T bar [psi] L.64] OSPC 125 LSR Dynamic 125 [7.88] 8 [2.Technical Information OSPB/C/F/D/L LS Steering Units.76] 16 [4.10] 10 [2. OSPF.41] 40 [10.63] 13 [3.20] 20 [5.23] OSPC 185 LSR Dynamic 185 [11. OLS Priority Valves.32] OSPC 60 LSR Dynamic 60 [3.02] OSPC 200 LSR Dynamic 200 [12.06] 40 [580] 280 [4061] OSPC 50 LSR Dynamic 50 [3.05] 5 [1.44] 4 [1.29] 19 [5.44] 4 [1.07] OSPC 250 LS Dynamic 250 [15.03] 23 [6. flow and pressure: OSPF LS Common data: Look in sub catalogue: “General Steering Components “ 11007611 • Rev EA • September 2014 23 .63] 13 [3. OSPC.66] 6 [1.11] OSPB/OSPC 100 LS Dynamic 100 [6. R bar [psi] OSPC 40 LS Dynamic 40 [2.05] 5 [1. OSPL Steering unit Displacement *Rated oil cm³/rev flow [in³/rev] l/min [US gal/min] Max.57] OSPC 40 LSR Dynamic 40 [2.58] OSPC 70 LSR Dynamic 70 [4.66] 6 [1.02] OSPB/OSPC 200 LS Dynamic 200 [12.11] SPC 100 LSR Dynamic 100 [6.76] 16 [4.10] 10 [2. OSPD.85] OSPC 80 LSR Dynamic 80 [4.85] OSPB/OSPC 80 LS Dynamic 80 [4.20] 20 [5.25] 25 [6. 10] 300 [18.07] OSPF 250 LS Dynamic 250 [15. OSPL Steering unit Displacement *Rated oil cm³/rev flow [in³/rev] l/min [US gal/min] Max.66] 220 [13.90] 20 [5.83] 33 [8. flow and pressure: OSPD LS OSPD and OSPQ steering units in the table below are all Load Sensing Dynamic type.10] 200 [12.29] 19 [5.Technical Information OSPB/C/F/D/L LS Steering Units.28] OSPD 70/230 LS 70 [4.30] OSPD 100/200 LS 100 [6.66] 260 [15.20] 20 [5.42] 22 [5.62] OSPD 60/185 LSR 60 [3.27] 195 [11.93] OSPD 125/285 LS 125 [7. OSPD.13] OSPD 70/385 LS 70 [4.72] OSPD 125/440 LS 125 [7.27] 7 [1.81] OSPD 70/195 LSR 70 [4.03] 23 [6.87] OSPD 100/300 LS 100 [6.23] OSPF 185 LS Dynamic 185 [11.58] OSPF 70 LS Dynamic 70 [4.42] 22 [5.27] 270 [16.66] OSPD 125/325 LS 125 [7.66] 185 [11.87] 26 [6.28] OSPF 230 LS Dynamic 230 [14.49] 39 [10.05] 5 [1.31] 30 [7.27] 385 [23.63] 13 [3.29] 19 [5.85] 44 [11. OSQ Flow Amplifiers LS Steering Units OSPB.60] OSPF 315 LS Dynamic 315 [19.43] OSPF 160 LS Dynamic 160 [9.81] OSPD 60/260 LS 60 [3.66] 6 [1.57] 175 [2538] 210 [3045] *Rated flow at 100 rpm Displacement.90] 20 [5. R bar [psi] . OLS Priority Valves.41] 40 [10.27] 195 [11.66] 185 [11.64] OSPF 125 LS Dynamic 125 [7.10] 200 [12. pressure on connections OSPD 60/185 LS 60 [3.63] 325 [19.28] OSPD 100/260 LS 100 [6.29] 19 [5.02] 210 [3045] 40 [580] 280 [4061] OSPD 60/220 LSR 60 [3.87] OSPD 70/195 LS 70 [4.07] OSPD 70/270 LS 70 [4.85] OSPF 80 LS Dynamic 80 [4.87] 26 [6.28] OSPD 100/200 LSR 100 [6. OSPC.03] 23 [6.27] 230 [14.02] 210 [3045] 40 [580] 280 [4061] OSPD 60/220 LS 60 [3.11] OSPF 100 LS Dynamic 100 [6.20] 20 [5. pressure on connections P bar [psi] T bar [psi] L.28] 11007611 • Rev EA • September 2014 P bar [psi] T bar [psi] L.02] OSPF 200 LS Dynamic 200 [12.10] 10 [2.39] 29 [7.45] OSPF 400 LS Dynamic 400 [24.76] 16 [4.66] 220 [13. Common data: Look in sub catalogue: “General Steering Components “ Steering unit 24 Displacement manual steer mode cm³/rev [in³/rev] Displacement *normal steer mode cm³/rev [in³/rev] Rated oil flow** l/min [US gal/min] Max.48] 27 [7.25] 25 [6.22] 32 [8. OSPF.88] 8 [2.63] 285 [17. R bar [psi] OSPF 50 LS Dynamic 50 [3.32] 140 [2030] 40 [580] 280 [4061] OSPF 60 LS Dynamic 60 [3.63] 440 [26.10] 260 [15.20] 20 [5. 49 US gal/min].22] 32 [8.41] 40 [10. OSPBX LS.82] 70** [18.49] * Rated flow at 100 rpm ** Please cantact Danfoss Sales Organization for flow higher then 70l/min [18. OSPC. speed than 100 rpm on steering wheel for OSPL 800 and OSPL 1000 : OSPL 800 max. flow and pressure: OSPL LS.82] 70** [18.60] OSPBX 315 LS Static 315 [19. 70l/min [18.44] 63 [16.22] 70** [18.45] OSPCX 400 LS Dynamic 400 [24. OLS Priority Valves.02] 70** [18.20] 20 [5.49] OSPL 520 LS Dynamic 520 [31.49 US gal/min] 70 rpm Valve functions in OSPC.49] OSPBX 160 LS Static 160 [9.49] OSPL 1000 LS Static 1000 [61. OSPD and OSPL LS steering units Pilot pressure relief valve. ** Rated flow at 100 rpm Displacement. OSPF.25] 25 [6. the amplification is fully active.28] OSPCX 250 LS Dynamic 250 [15.60] OSPCX 315 LS Dynamic 315 [19.02] 70** [18.49] OSPL 1200 Dynamic 1200 [73. R bar [psi] OSPL 520 LS Static 520 [31. and the displacements in the table are valid.T.76] 16 [4. OSQ Flow Amplifiers LS Steering Units OSPB. OSPF LS.44] 70** [18.Technical Information OSPB/C/F/D/L LS Steering Units.25] 25 [6.76] 16 [4.64] OSPL 800 LS Dynamic 800 [48.73] 52 [13.49 US gal/min] 87 rpm OSPL 1000 max speed at 70l/min [18.49 US gal/min] results in lower max.73] 52 [13.44] 63 [16. OSPLX LS Common data: Look in sub catalogue: “General Steering Components “ Steering unit Displacement *Rated oil cm³/rev flow [in³/rev] l/min [US gal/min] Max. (P .23] 210 [3045] 40 [580] 280 [4061] OSPBX 200 LS Static 200 [12. OSPD.64] OSPL 800 LS Static 800 [48. OSPL * normal steer mode: OSPQ: at a steering wheel speed higher than approximately 20 rpm. speed at 70l/min [18.28] OSPBX 250 LS Static 250 [15.20] 20 [5. OSPCX LS. OSPF.22] 32 [8.49] OSPL 1000 LS Dynamic 1000 [61.74] 240 [3081] 40 [580] 280 [4061] OSPL 630 LS Dynamic 630 [38.57] OSPLX 520 LS Static 520 [31. pressure on connections P bar [psi] T bar [psi] L. OSPD LS and OSPL LS steering unit together with the priority valve 11007611 • Rev EA • September 2014 25 .74] 210 [3045] 40 [580] 280 [4061] OSPLX 630 LS Static 630 [38.44] 63 [16.41] 40 [10.57] OSPCX 160 LS Dynamic 160 [9.23] 210 [3045] 40 [580] 280 [4061] OSPCX 200 LS Dynamic 200 [12.73] 52 [13. Qp) characteristic The pilot pressure relief valve protects the steering unit against excessive pressure.45] OSPBX 400 LS Static 400 [24.64] OSPLX 800 LS Static 630 [38.74] 210 [3045] 40 [580] 280 [4061] OSPL 630 LS Static 630 [38. The pilot pressure relief valve in the OSPC LS. a back pressure valve must be fitted in the tank line from the steering unit. so they react very quickly. OSPD.10 A = 170 + 5 bar [2465+ 73 psi] -0-0 B = 140 + 5 bar [2030 + 73 psi] -0-0 Shock valves The shock valves protect the steering unit and reduce external forces on the steering cylinder by limiting the pressure difference from L to T and from R to T. the setting values are valid at a dynamic flow of 0.5 .792 US gal/min] At higher flow pressure peaks may occur. For further advice.29 US gal/min]. See diagramme examples in sub catalogue “General Steering Components” page 37 . OLS Priority Valves.1 l/min [0. OSPD and OSPL load sensing dynamic steering units. For OSPC. Setting tolerance: </= 170 bar [2465 psi]: rated value +5 bar [72. The pilot pressure relief valve is set at an oil flow to the priority valve of 25 l/min [6. we recommend 5-10 bar [72. > 170 bar [2465 psi]: rated value +10 bar [145 psi]. the setting values are valid at a dynamic flow of 1. but on vehicles with strong self straightening tendencies and on articulated steered vehicles. A connection which incorporates a check valve must be established to allow oil flow to by-pass the back pressure valve (and filter) from the tank to steering unit.5 psi]. OSPC. 26 11007611 • Rev EA • September 2014 .39.60 US gal/min].Technical Information OSPB/C/F/D/L LS Steering Units. The shock valves are set at 3 l/min [0. OSQ Flow Amplifiers LS Steering Units OSPB. OSPL limit the maximum steering pressure P-T. Setting tolerance: rated value +20 bar [290 psi]. please contact the Danfoss Sales Organisation. P-T psi 3000 2500 2000 P-T bar 200 180 A 160 B 140 120 1500 1000 100 80 60 0 OSPC/OSPF/OSPD/OSPU/OSPL LS+OLS 80 0 0 0 10 2 20 4 30 6 8 40 10 50 12 60 14 16 70 18 80 20 Qp l/min Qp US gal/min 152B79.145 psi]. Generally Danfoss recommend a back pressure of 2 bar [29 psi]. To provide correct suction.16 US gal/min]. The shock valves are of the direct acting type. OSPF. For OSPF load sensing dynamic steering units.6 l/min [0. Suction valves The suction valves allow oil suction to avoid cavitation in the steering cylinder. look in sub catalogue: “General Steering Components “ page 26. ∆p psi 90 75 ∆p bar 6 5 60 4 45 3 30 2 15 1 0 0 0 0 10 20 3 30 6 40 9 50 12 60 15 70 18 Qp 80 l/min 21 Qp US gal/min 150-375.43 in] minimum bore.50 7 1. OSQ Flow Amplifiers LS Steering Units OSPB.50 0. OSPD.25 6 1. OLS Priority Valves.10 Check valves The check valve in the P connection of the steering unit protects the driver against steering wheel jerks. The check valve prevents oil from flowing backwards into the pump line when steering against a high pressure on the cylinder side.75 8 2 9 2.Technical Information OSPB/C/F/D/L LS Steering Units. OSPF.75 4 5 1 1.25 2 3 0. 11007611 • Rev EA • September 2014 27 . which assumes the use of port adaptors with 11 mm [0. OSPC. In OSPF LS oil cannot flow backwards into the LS line. OSPL T-R T-L T-R T-L psi bar 100 7 6 80 5 60 4 3 40 2 20 1 0 Qp 0 0 1 0 0. The pressure drop across the check valve is indicated on the following graph.11 The check valve in the LS line of OSPC LS and OSPD LS dynamic steering units also protects the driver against steering wheel jerks. The check valve prevents oil from flowing backwards into the LS line to the priority valve when steering against a high pressure on the cylinder side.50 11 2.75 l/min Qp US gal/min 150-374.25 10 2. OSPC.G 1/4 150-603.479] K K: DIN 3852-2 . T.15[0.11.10-A B B: G port w.6[1.02] min.10-E F F: Metric ports w.5[0.024] N 150-603.47] L 150-603. spot face (P.M18 x 1.12[0. OSPBX LS. OSPF. OSPLX LS A A: G port w.10] 30° L: DIN 3852-2 .59] 0.114] 0. T. spot face (LS in OSPB and OSPL with no valves) min.10-D E E: Metric port w.59] M 150-603. OSPL Port thread versions for OSPB LS. L.59] Ø28.Ø28[1.10-B C C: G ports (P. OSQ Flow Amplifiers LS Steering Units OSPB.126] Ø28.6[1.10-F 28 11007611 • Rev EA • September 2014 .114] min. R) P min.5 150-603.04] min.87] O: ISO 6149-1 .126] Ø28.G 1/2 min. spot face and O-ring chamfer (LS) min.10-C D D: G ports w.6[0. OSPC LS/LSR. spot face (LS in OSPC/F/D/Q and OSPL with valves) min.Technical Information OSPB/C/F/D/L LS Steering Units. spot face and O-ring chamfer (P.846] M: DIN 3852-2 .15[0.6[0.15[0. R) Ø21.83] 30° 1[0.453] O 150-603.5 30° 1[0.G 1/4 min. OLS Priority Valves.12[0.Ø21[0. OSPF LS.024] P: ISO 6149-1 .04] min.3[1. R) N: DIN 3852-2 . L. OSPL LS.3[1.Ø26[1. L.5[0.M12 x 1.G 1/2 Ø28. OSPD LS/LSR. OSPCX LS. OSPD.Ø22[0. T. O-ring chamfer (LS in OSPC/ F/D and OSPL with valves) 150-603. OSPC.5[0. OSPD.10-I 11007611 • Rev EA • September 2014 29 .83] 30° R min.45] H: UNF ports w.Ø21[0.59] I: UNF ports w.7/16-20 UNF O-ring boss port H min.819] S min. O-ring chamfer (P.10-G R: ISO 11926-1 .83] 30° Q Q: ISO 11926-1 .8[0. OSPF.Ø21[0.45] G: UNF port w. L. OSPL G min.11.7/16-20UNF O-ring boss port min.10-H S: ISO 11926-1 . R) 150-603. T.3/4-16UNF O-ring boss port I Ø20.Technical Information OSPB/C/F/D/L LS Steering Units.11. OLS Priority Valves.5[0. O-ring chamfer (LS in OSPB and OSPL with no valves) 150-603. OSQ Flow Amplifiers LS Steering Units OSPB.15[0. Technical Information OSPB/C/F/D/L LS Steering Units.26] OSPB 80 129 [5.31] 16.1 [0.280] 45˚ 57 [2. OSPF. OSPBX LS for OSQ Type L1mm [in] L2mm [in] OSPB 50 126 [4.4 [0.4 [1.11 30 11007611 • Rev EA • September 2014 . OSPBX LS for OSQ Dimensions for OSPB LS for OLS.8 [0. OSPC.28] 29 [1.24] 7 [0. OLS Priority Valves.58] 47 [1.110] L2 min.51] OSPB 125 135 [5. OSPD.9 [1.73] 52.748] Ø25.02] OSPB/OSPBX 250 151 [5.71] 26.20] 13.0 [0.08] 10.2 4 .0 [2.05] Dimensions for OSPB LS for OLS.2 0] 17] max.000] L LS B A 2.73] R 44 [1.73] Ø44.2 [0.52] 150-590.5 [1.96] 6.7 [ 3. OSPBX LS for OSQ Ø91 [3.3 [3.02] 66 [2.73] L1 102 [4.94] 32.60] LS 64 [2. OSPL Dimensions OSPB LS for OLS.82] OSPB/OSPBX 200 145 [5. 7. 87 [3.51] 20.41] OSPB 100 132 [5.42] T 44 [1.64] OSPB/OSPBX 160 140 [5.8 [0.28] OSPB/OSPBX 315 160 [6. OSQ Flow Amplifiers LS Steering Units OSPB.30] 40.61] OSPB/OSPBX 400 171 [6.14] 85 [3.35] 44 [1.85] P Ø82 Ø81 .0 [1.4 [1.5 [0. 20 UNF O-ring boss.96] 6.0 [2.1 [0.05] 11007611 • Rev EA • September 2014 31 .26] OSPC/OSPF 50 126 [4. 15 mm [0.63 in] deep LS: G ¼ with spot face.06] 35.43 in] deep LS: G 7/16 .28] OSPC/OSPF OSPCX 315 160 [6.16 UNC.59 in] deep B: M10 × 1.96] 6.04] 9.63 in] deep B: 3/8 .41] OSPC/OSPF 100 132 [5.Technical Information OSPB/C/F/D/L LS Steering Units.31] 16.71] 26. OSPL European version: US version: A: G 1/2.02] OSPC/OSPF 230 154 [6. 15 mm [0. 11.94] 32. OSPD.5 [0.61] OSPC/OSPF/OSPCX 400 171 [6.2 [0.5[0.38] OSPC/OSPF OSPCX 250 151 [5. 16 mm [0. 16 mm [0.64] OSPC/OSPF OSPCX 160 140 [5.8 [0.94] OSPC/OSPF OSPCX 200 145 [5.36] OSPC/OSPF 80 129 [5.9 [1.51] 20.5 [1.63] 24.04] 9.82] OSPC/OSPF 185 143 [5. OSQ Flow Amplifiers LS Steering Units OSPB.0 [0.59 in] deep A: 3/4 .4 [0.0 [1.5.08] 10.73] 52. OLS Priority Valves.1 [0. OSPF.26] OSPC/OSPF 60 128 [5.30] 40.16 UNF O-ring boss.45 in] deep OSPC LS/LSR and OSPF LS for OLS.0 [0.20] 13. OSPC. 11 mm [0.1 [1.36] OSPC/OSPF 70 128 [5.5 mm [0. OSPCX LS for OSQ Type L1 mm [in] L2 mm [in] OSPC 40 126 [4.51] OSPC/OSPF 125 135 [5. 16 mm [0.3 [3 .4 [1.45 in] deep 11. OSPC.63 in] deep LS: G 1/4 w.000] A 2. spot face LS: 7/16 .42] R 38 [1. 16 mm [0.24] 7 [0. 11. OSPL Ø91 [3.14] L1 102 [4. OSPD.28] 85 [3. spot face A: 3/4-16 UNF O-ring boss.7 [ .5 mm [0.Technical Information OSPB/C/F/D/L LS Steering Units. 7.5 ISO 6149.58] P 47 [1.59 in) deep 15 mm [0.5.110] L2 min.8 [0.1 [0.35] 44 [1.63 in] deep B: 3/8 .11 European version: US version: A: G 1/2 or G 1/2 w.85] T Ø8 Ø812.38] LS 51 [2.748] Ø25.73] Ø44. 87 [3.20 UNF O-ring boss.16 UNC or M10 x 1. OLS Priority Valves. OSQ Flow Amplifiers LS Steering Units OSPB.45 in] deep 32 11007611 • Rev EA • September 2014 .5 mm [0.01] OSPC LS/LSR for OLSA L T R LS P 150-591.280] 45˚ 57 [2. 15 mm (0.5. OSPF. or M18 x 1.02] 35 [1.2 ] 17] max. or M12 x 1.4 [1.59 in] deep B: M10 x 1.50] L LS B 44 [1.73] 29 [1.240 3.5 ISO 6149. 0 [0.58] P 47 [1.82] OSPD 125/325 207 [8.28] 29 [1.64] 40.8 [0.2 [0. 11007611 • Rev EA • September 2014 33 .36] 20.63 in] deep.1 [0.85] T LS max.03] 13.5.12 European version: US version: A: G 1/2 w.0 [1. OSQ Flow Amplifiers LS Steering Units OSPB.5.16 UNF O-ring boss.51] 20.9 [1.52] 13.64] 26. OSPD.64] OSPD 60/220 195 [7. OLS Priority Valves.000] A 57 [2.59 in] deep A: 3/4 . spot-face or M18 × 1.70] 9.3 [3 . 7. OSPF.48] 9.2 ] 17] Ø91 [3.8 [0.0 [1.42] R 38 [1. 16 mm [0.15] 16.24] 85 [3.82] OSPD 100/300 204 [8.110] L3 45˚ L2 min.46] 9.95] 16.8 [0.2 [0. 87 [3.35] 102 [4.61] B 2.36] 16.82] OSPD 70/270 200 [7.82] OSPD 70/195 190 [7.51] OSPD 100/260 199 [7.8 [0.36] 16.64] 20.280] 7 [0.74] 16.87] 9.51] 13.0 [1.5 ISO 6149 15 mm [0.36] 40.0 [0.68] 9.02] OSPD 70/385 215 [8.51] 26.61] OSPD 100/200 191 [7.38] LS 51 [2.7 [ .83] 13.0 [0.02] OSPD 125/440 222 [8. OSPL OSPD LS/LSR for OLS Type L1 mm [in] L2 mm [in] L3 mm [in] OSPD 60/185 191 [7.2 [0.01] 150-593.59 in] deep B: M10 × 1.14] Ø8 Ø812.02] OSPD 125/285 202 [7.240 3.50] L 44 [1.1 [0. OSPC.73] Ø44.Technical Information OSPB/C/F/D/L LS Steering Units. 15 mm [0. 16 mm [0.02] 44 [1.1 [0.63 in] deep B: M 10 × 1.4 [1.1 [0.9 [1.2 [0.65] OSPD 70/230 195 [7.8 [0.36] 20.4 [1.1 [0.73] L1 35 [1.1 [0.1 [0.748] Ø25.36] 26.0 [0.2 [0.52] 9. OSPF.60] LS 64 [2.7 [ 3.09] OSPL 1000 263 [10.8 [0.000] A 2.4 [1.0 [4.76] 67. 11.24] 85 [3.14] 45˚ 57 [2.8 [2.35] 134.35] L1 102 [4.110] L2 min.73] L LS B 44 [1.67] OSPL/OSPLX 630 211 [8.42] R 44 [1. 7.23] OSPL/OSPLX 800 233 [9. 87 [3.748] Ø25.20 UNF o-ring boss. OSPL LS: G ¼ w. OSPD.5 mm [0.2 0] 17] max. OLS Priority Valves. spot face or M 12 x 1.5 ISO 6149 11.280] 7 [0.Technical Information OSPB/C/F/D/L LS Steering Units.5 mm [0.0 [5.85] T Ø82 Ø81 .2 4 .31] 82.4 [1.73] Ø44.17] 104.3 [3.1 [0.27] Ø91 [3.0 [3.45 in] deep LS: 7/16 .58] P 47 [1. OSQ Flow Amplifiers LS Steering Units OSPB.28] 44 [1.02] 66 [2.52] 38 [1.01] P301 030 34 11007611 • Rev EA • September 2014 .38] LS 51 [2.50] LS 35 [1.73] 29 [1.45 in] deep OSPL LS for OLS and OSPLX LS for OSQ Type L1 mm [in] L2 mm [in] OSPL/OSPLX 520 197 [7. OSPC. Technical Information OSPB/C/F/D/L LS Steering Units.5. 15 mm [0. OSPL OSPL LS with pilot pressure relief valve: European version: US version: A: G 1/2. 16 mm [0. 11. 11.45 in] deep LS: 7/16-20 UNF O-ring boss.63 in] deep B: M10 x 1.63 in] deep LS: G 1/4 w. OSPC.5.45 in] deep 11007611 • Rev EA • September 2014 35 . spot face.59 in] deep A: 3/4-16 UNF O-ring boss.5 mm [0. 11. spot face.59 in] deep or for OVPL B: M10 x 1. OSQ Flow Amplifiers LS Steering Units OSPB. 16 mm [0. OSPF.63 in] deep LS: G 1/4 w.5 mm [0. OSPD.5 mm [0.45 in] deep European version: A: for OVPL B: M10 x 1.5. 16 mm [0. OLS Priority Valves. 15 mm [0. OSPF.000] A 45˚ 57 [2. OSPD.34] 104 [4.09] 52 [2.05] 2.35] 44 [1.16 UNF O-ring boss.45 in] deepOSPL 1200 LS for OLS 36 11007611 • Rev EA • September 2014 . OSQ Flow Amplifiers LS Steering Units OSPB. 16 mm [0.35 [1. OSPL OSPL 1200 LS for OLS Type L1 mm [in] L2 mm [in] L3 mm [in] OSPL 1200 LS 288 [10.7 [ .4 [1. 7.2 ] 17] Ø91 [3. 87 [3.24] 85 [3. OSPC.58] P 47 [1.73] L1 102 [4.38] LS 51 [2.73] Ø44.110] L3 min.02] 35 [1.01] 150-612.280] L2 7 [0.1 [0.746] Ø25.63 in] deep LS: 7/16 .20 UNF O-ring boss 11.240 3.59 in] deep B: M10 x 1.8 [0. 15 mm [0.Technical Information OSPB/C/F/D/L LS Steering Units.28] 29 [1.42] R 38 [1.4 [1.5 mm [0.10 A: 3/4 .14] Ø8 Ø812.85] T LS max.748] Ø44.50] L B 44 [1. OLS Priority Valves.5.3 [3 . OVPL valve blocks are available with 4. 7 ports OSPL LS LS 150-685. 7 ports Cylinders P T L R PP OVPL. which are prepared for OVPL mounting. OVPL. which means that 2 steering cylinders can be connected directly to the valve block. OVPL with 7 connections have 2 L and 2 R connections.Technical Information OSPB/C/F/D/L LS Steering Units.10 11007611 • Rev EA • September 2014 37 . OLS Priority Valves. suction valves. 5 or 7 connections. Versions OVPL valve blocks contain shock valves. OSQ Flow Amplifiers Valve Block OVPL OVPL valve blocks can be flanged onto Danfoss steering units type OSPL. check valve and back-pressure valve. 41] OVPL 28 152-1114 5 280 [4061] 2.41] ** Spot face around port connections OVPL in the table below has the following valve functions incorporated: Check valve in P-port Shock valves Suction valves Backpressure valve.10 Valve block Code numbers Valve settings Connections European version P. with by-pass to reduce stand-by pressure in neutral position. L.0 [4. OSQ Flow Amplifiers Valve Block OVPL Code numbers and weight OVPL in the table below have all the following valve functions incorporated: Check valve in P-port Shock valves Suction valves • • • External connection OVPL. T.10 External connection OVPL. 7 ports Sauer-Danfoss steering unit L L L R R T PP P R T P 150-629.Technical Information OSPB/C/F/D/L LS Steering Units.0 [4. 5 ports Sauer-Danfoss steering unit L L R R T PP P T P 150-628. R: G 1/2-S** PP: G 1/4-S** Number of ports Shock valve bar [psi] kg [lb] OVPL 24 152-1117 5 240 [3480] 2.0 [4.41] OVPL 28 152-1116 7 280 [4061] 2. • • • • 38 Weight 11007611 • Rev EA • September 2014 . OLS Priority Valves. without by-pass. • • • • OVPL. OSQ Flow Amplifiers Valve Block OVPL OVPL. 5 ports and backpressure valve External connection Danfoss steering unit L L R R T PP P T P 150-631.10 Valve block Code numbers Connections European version P.10 11007611 • Rev EA • September 2014 39 .0 [4. OLS Priority Valves. R: G 1/2-S** PP: G 1/4-S** Valve settings Number of ports Shock valve bar [psi] Weight kg [lb] OVPL 24 152-1120 5 240 [3480] 2.Technical Information OSPB/C/F/D/L LS Steering Units.0 [4.41] OVPL 28 152-1130 5 280 [4061] 2. T. L. 5 ports and backpressure valve with by-pass External connection Sauer-Danfoss steering unit L L R R T PP P T P 150-630.41] ** Spot face around port connections OVPL in the table below have all the following valve functions incorporated: Check valve in P-port Shock valves Suction valves Backpressure valve. OSQ Flow Amplifiers Valve Block OVPL OVPL.10 Valve block OVPL 28 Code numbers Valve settings Connections US version 3/4 .41] OVPL 28 152-1115 7 280 [4061] 2.S** PP: G 1/4 .Technical Information OSPB/C/F/D/L LS Steering Units.16 UNF O* + S** Number of ports Shock valve bar [psi] kg [lb] 152-1133 4 2.S** Valve settings Number of ports Shock valve bar [psi] Weight kg [lb] OVPL 24 152-1132 5 240 [3480] 2. 4 ports External connection Danfoss steering unit L L R R T T P P 150-633. L. 7 ports and backpressure valve External connection Danfoss steering unit L L L R R T PP P R T P 150-632. T.0 [4. R: G 1/2 .41] ** Spot face around port connections OVPL in the table below has following valve functions incorporated: • Check valve in P-port • Shock valves • Suction valves OVPL.0 [4.41] 280 [4061] * O-ring chamfer on port connections ** Spot face around port connections OVPL in the table below has the following valve functions incorporated: 40 Weight 11007611 • Rev EA • September 2014 . OLS Priority Valves.0 [4.10 Valve block Code numbers Connections European version P. OSQ Flow Amplifiers Valve Block OVPL • • • • Check valve in P-port Shock valves Suction valves Backpressure valve with by-pass to reduce stand-by pressure in neutral position. steering components “ Valve functions The data below come from measurements on a representative sample of valve blocks from production.41] [4061 ] * O-ring chamfer on port connections ** Spot face around port connections Technical data Common data Look in sub-catalogue: “General. Oil flow l/min [US gal/min] Max. pressure on connections P.10 Valve block OVPL 28 Code numbers Valve Weight setti ngs Connections US version 3/4 .Technical Information OSPB/C/F/D/L LS Steering Units.42] 225 [3263] 15 [218] 280 [4061] 11007611 • Rev EA • September 2014 41 . R bar [psi] OVPL 24 100 [26. An oil with a viscosity of 21 mm²/s [SUS] at 50°C [122°F] was used during measuring.16 UNF O* + S** Number of ports Shoc kg [lb] k valve bar [psi] 152-1136 4 280 2. 4 ports and backpressure valve with by-pass External connection Danfoss steering unit L L R R T T P P 150-634. PP bar [psi] T bar [psi] L. OVPL. Valve block Max.42] 190 [2756] 15 [218] 240 [3480] OVPL 28 100 [26. OLS Priority Valves.0 [4. The shock valves are set at 10 l/min. OLS Priority Valves. The shock valves in the valve block limit the maximum pressure drop from L to T and from R to T.10 42 11007611 • Rev EA • September 2014 . Setting tolerance: rated value +/. [2. a back pressure valve must be fitted in the tank line from the steering unit.10 bar [145 psi] . ex. The capacity of the suction valves can be increased by building in a back pressure in the valve block. OSQ Flow Amplifiers Valve Block OVPL Shock valves The shock valves protect the valve block and steering unit and limit maximum external forces on the steering cylinder.Technical Information OSPB/C/F/D/L LS Steering Units. The curve below shows pressure drop across a suction valve ∆p psi ∆p bar 15 200 150 10 100 5 50 0 0 0 10 0 20 2 4 30 6 40 8 50 10 12 60 Qp l/min Qp 16 US gal/min 14 152-150. The check valve is built into the P connection of the valve block. To provide correct suction. 240 [3480 psi] +/. The check valve prevents oil from flowing backwards into the pump line when steering against a high pressure on the cylinder side. The shock valves are of the direct acting type. The curve below shows pressure drop across the check valve in p-connection ∆p psi 60 ∆p bar 4 50 3 40 30 2 20 1 10 0 0 0 0 10 2 20 4 30 6 8 40 10 50 12 60 14 16 70 18 80 20 90 22 24 100 26 110 28 Qp l/min Qp US gal/min 152-152.10 Check valve The check valve protects the driver against steering wheel jerks. so they react very quickly.10 bar [145 psi]. Suction valves The suction valves ensure oil suction to avoid cavitations in the steering cylinder.64 US gal/min]. ∆p psi 300 ∆p bar 20 250 200 150 15 10 100 5 50 0 Qp 0 0 10 20 0 2.5 40 10 50 12.5 80 20 90 22.10 The curve below shows pressure drop for backpressure valve with by-pass.5 80 20 90 22. no spot face is allowed.5 5 30 7. OSQ Flow Amplifiers Valve Block OVPL Backpressure valve A backpressure valve increases the capacity of the suction valves. The curve below shows pressure drop for backpressure valve without by-pass. ∆p psi 300 ∆p bar 20 250 200 150 15 10 100 5 50 0 Qp 0 0 10 20 0 2.10 Installation Connection P in the valve block must be placed over the connection P in the steering unit.5 60 15 70 17. 11007611 • Rev EA • September 2014 43 . The valve block is supplied inclusive of 2 mounting screws and 4 O-rings for building onto the steering unit. Tightening torque 65 ±5 N•m [575 ±44 lbf•in]. so OVPL is provided with a positioning pin to fit the positioning hole in the steering unit.Technical Information OSPB/C/F/D/L LS Steering Units.5 40 10 50 12.5 60 15 70 17. OLS Priority Valves.5 100 l/min 25 Qp US gal/min 152-151.5 100 l/min 25 Qp US gal/min 152-178.5 5 30 7. It is only allowed to mount OVPL blocks on steering units with a flat port flange. 14] 44 [1.10] G 1/2 w.5 mm [0.2 Y: 21. 16 [0. T. spot face.63] P.62] OVPL.2 +0.73] US version: 95 [3.2 B: Positioning pin premounted in OVPL 102 [4. L and R: 3/4-16 UNF O-ring boss 15 mm [0.45 in] deep X: 30. OLS Priority Valves.2 X 44 [1.10 44 11007611 • Rev EA • September 2014 .01] European version: B 15 mm [0.02] 152-149.73] X: 30. w.74] OVPL. L and R: 51 [2.2 +0.59 in] deep Y PP: G 1/4. OSQ Flow Amplifiers Valve Block OVPL Dimensions 92 [3. 11.59 in] deep 29 [1. T.3 +/. 4 ports (no PP) P.Technical Information OSPB/C/F/D/L LS Steering Units.0. 5 ports 28 [1. spot face. OLS Priority Valves.59 in] deep 16 [0.73] 92 [3.Technical Information OSPB/C/F/D/L LS Steering Units.63] P.73] X 29 [1.14] 50 [1.2 X 44 [1. 15 mm [0. w.97] 102 [4.85] 44 [1.45 in] deep X: 30. spot face. spot face.2 Y: 21.2 +0. 7 ports 92 [3.10] G 1/2 w.5 [0. OSQ Flow Amplifiers Valve Block OVPL OVPL. 2xL and 2xR: 51 [2.62] B: Positioning pin premounted in OVPL 21. T. 11.5 mm [0.3 +/.0.62] 28 [1.01] European version: B Y PP: G 1/4.02] 152-148.10 11007611 • Rev EA • September 2014 45 . Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Angle Block OVR OVR angle blocks are especially designed for applications in which pipes and/or hoses must run parallel with the steering column axis, and where space is limited. The valve block can be flanged onto Danfoss steering unit OSPB, OSPC, OSPD, OSPF, OSPQ and OSPL, which have no spot face around the ports. Use the angle block makes angle and swivel connections and pipe bends unneccessary. The OVR connections are positioned away from the steering wheel. (see Dimensions) Version OVR L L R R T T P P 150-635.10 Code numbers and weight OVR in the table below has no valve functions incorporated. Angle block OVR Code numbers Weight Connections European version P, T, L, R: G 1/2 S** kg [lb] 152-0201 2.0 [4.41] S** : Spot face around port connections Installation The valve block is supplied inclusive of 2 mounting screws and 4 O-rings for building onto the steering unit. Tightening torque 65 ±5 N•m [575 ±44.3 lbf•in]. OVR blocks may only be mounted on steering units with a flat port flange, (no spot facing). For OVR blocks with other thread ore kind of valves mounted, please contact the Danfoss Sales organisation. 46 11007611 • Rev EA • September 2014 Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Angle Block OVR Dimensions OVR rmax. 0.5 [0.20] 2.5 [0.098] max. 91 [3.58] 100 [3.94] 106 [4.17] 38 [1.50] 140 [5.51] Ø29.4 [1.158] Ø29.0 [1.143] 15 [0.59] 25 [0.98] 46 [1.81] 152-31.10 European version: G 1/2, 15 mm [0.59 in] deep P, T, L and R: 11007611 • Rev EA • September 2014 47 Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Priority Valves OLSA and OLS Versions Danfoss priority valves are used in steering systems with load sensing steering units. In such systems steering always has first priority Load sensing static priority valves Load sensing static steering units require load sensing static priority valves. Load sensing static steering systems have no oil flow in the LS connection when the steering unit is in neutral position. Load sensing dynamic priority valves Load sensing dynamic steering units require load sensing dynamic priority valves. Load sensing dynamic steering systems have a constant oil flow in the LS connection from the priority valve to the steering unit even when the steering unit is in neutral position. Ports: P = pump, CF = controlled flow (priority oil flow), EF = excess flow, L = left, R = right, T = tank, LS = load sensing, PP = pilot pressure OLSA 40/80 The OLSA 40 and OLSA 80 “flange on” priority valves are used in load sensing steering systems, built onto OSPC LS (OLSA) steering units. OLSA static 'OLSA dynamic LS L L CF T LS R R L L CF T C A P T EF 152B135.11 48 11007611 • Rev EA • September 2014 P R R B T EF 152B170.11 OSPF LS. OSPC LS. OSPD LS.10 OLS static OLS dynamic The OLS 160 “in line” priority valve is used in load sensing steering systems together with OSPB LS. OSPF LS. OSPU LS and OSPL LS steering units. OLS 80 and OLS 120 “in line” priority valves are used in load sensing steering systems together with OSPB LS. OSPU LS and OSPL LS steering units. OLS Priority Valves. OLS 160 CF EF LS CF EF LS PP P T 152B137. OSQ Flow Amplifiers Priority Valves OLSA and OLS A: PP-damping orifice B: LS-orifice C: Dynamic-orifice The OLS 40.10 152B134.Technical Information OSPB/C/F/D/L LS Steering Units.11 11007611 • Rev EA • September 2014 P T 152B172. OSPC LS. OLS 40/80 OLS 120 CF CF EF EF LS LS P P 152B171. OSPD LS.11 49 . OLS 320 EHPS steering valve has build in priority valve. OSPF LS. CF EF P LS T 152B172.5 USgal/min] a combination of EHPS and OLS 320 gives a good compact solution to reduce hosing and installation cost compared with stand alone components. OSPD LS and OSPU LS in load sensing steering systems. the immediate choice is normally a priority valve with internal PP.5 USgal/min].7 USgal/min] In systems with EHPS and pump flow between 120 l/min [31. as these all govern the selection for control spring pressure whether the priority valve should have internal PP (Pilot Pressure) or external PP-connection depends on the pressure drop in the pump line between the priority valve’s CF-port (Controlled Flow) and the steering unit’s P-port. where maximum oil flow doesn’t exceed 80 l/min [21. Danfoss gear pumps type SNP and steering units type OSPB LS. 11007611 • Rev EA • September 2014 . OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS static OLS dynamic OLS 160 is also available without pilot pressure relief valve. For further details of this OLS 320: look in EHPS catalogue 520L0521.g. pump flow 120 l/min [31. The priority valve OLSP 80 is to be used in connection with e.11 System sizing The steering system pump is sized so that satisfactory performance is achieved for both steering and working hydraulics . With normal hose and tube dimensions and less than 5 m distance between priority valve and steering unit.7 US gal/min].7 USgal/min] and 320 l/min [84. OLS Priority Valves. but for max. 320 l/min [84. initial steering response time and stability. consider the type of steering unit (LS static. OSPC LS. LS dynamic or OSPF LS dynamic) • • • • • 50 the displacement of the steering unit the pump flow the application’s requirement for energy optimization. Before selecting a priority valve.Technical Information OSPB/C/F/D/L LS Steering Units. OLSP 80 priority valves are to be flanged on gear pumps with outlet ports square flange type 35 (35 mm pitch diameter of 4x M6 bolt holes for fixing the priority valve on pump).even at idle. 0 [2.2] OLS 80 152B0263 152B0280 10 [145] 1. have internal PP connection. except OLS 160 static.14 UNF OLS 40 152B0231 152B0237 4 [58] 1.63] OLSA 40 152B0002 152B0122 7 [101.1 [4. EF: G 3/4 US version LS: 7/16 -20 UNF CF: 3/4 .5] 1.5] 1.16 UNF P. OLS Priority Valves. OSQ Flow Amplifiers Priority Valves OLSA and OLS The following survey lists the code numbers of the priority valves that are the most frequently used in connection with the above Danfoss steering unit types. EF: G 1/2 US version T.63] Control spring pressure bar [psi] Weight kg [lb] OLS 40 static and OLS 80 static Priority valve Code Numbers Connections European version LS: G 1/4 P.12 UNF OLS 120 152B2232 152B2238 7 [101.20 UNF CF: 3/4 .63] OLSA80 152B0015 152B0125 10 [145] 2.63] 11007611 • Rev EA • September 2014 51 .63] OLSA 80 152B0017 152B0020 7 [101.1 [4.5] 2.14 UNF OLSA 40 152B0001 - 4 [58] 2. OLS 160 static in the code number table all have external PP connection.63] OLS 120 152B2233 152B2239 10 [145] 2.2] OLS 80 152B0262 152B0268 7 [101.5] 2. EF: 1 1/16 . L: 9/16 .0 [2.0 [2.1 [4.63] OLSA 80 152B0016 152B0019 4 [58] 2.0 [2.Technical Information OSPB/C/F/D/L LS Steering Units.0 [2. All priority valves in the code number tables.2] OLS 40 152B0233 152B0253 10 [145] 1.5] 2.2] OLS/OLSA static priority valves for load sensing statics steering units OLS 120 static Priority valve Code Numbers Connections Control spring pressure bar [psi] Weight kg [lb] European version LS: G 1/4 CF: G 1/2 P.2] OLS 40 152B0232 152B0238 7 [101.2] OLS 80 152B0261 152B0267 4 [58] 1.18 UNF P. CF: G 1/2 US version LS: 7/16 . Code numbers and weights OLS/OLSA static priority valves for load sensing static steering units OLSA 40 static and OLSA 80 static Priority valve Code Numbers Connections Control spring pressure bar [psi] Weight kg [lb] European version T. EF: 7/8 . EF. R.L: G 3/8 P.0 [2.1 [4.63] OLSA 40 152B0003 152B0124 10 [145] 2.1 [4.R.1 [4.1 [4.1 [4. EF: 7/8 .16 UNF P. 63] OLSA 40 152B8046 152B8043 10 [145] 2. T: 7/16 -20 UNF CF: 3/4 .0 [2.16 UNF P. EF: 7/8 .5] 2.0 [2.20 UNF CF: 3/4 .0 [2. CF: G 1/2 US version LS: 7/16 . PP.14 UNF 152B8231 - Control spring pressure bar [psi] Weight kg [lb] 4 [58] 1. PP.1 [4.5] 2.7] OLS/OLSA dynamic priority valves for load sensing dynamic steering units OLSA 40 dynamic and OLSA 80 dynamic for OSPC LS dynamic Priority valve Code numbers Control spring pressure bar [psi] Connections European version T.63] OLSA 80 152B8049 152B8045 10 [145] 2.16 UNF P.0 [2.4 [9.5] 1.1 [4.63] OLSA 80 152B8048 152B8044 7 [101. OSPD and OSPL LS dynamic Priority valve Code numbers Connections OLS 40 52 European version LS: G 1/4 P.R. EF.14 UNF OLSA 40 152B8001 - 4 [58] 2. T: G 1/4 CF: G 1/2 P.20] 11007611 • Rev EA • September 2014 . EF: G 3/4 US version LS.63] OLS/OLSA dynamic priority valves for load sensing dynamic steering units OLS 40 dynamic and OLS 80 dynamic for OSPB. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 160 static Priority valve Code numbers Connections Control spring pressure bar [psi] Pilot pressure relief valve bar [psi] Weight kg [lb] European version LS.7] OLS 160 152B1006 152B1086 10 [145] 170 [2465] 4.Technical Information OSPB/C/F/D/L LS Steering Units.1 [4.12 UNF OLS 160 152B1005 152B1085 7 [101.5] 1.4 [9.1 [4. OLS Priority Valves.20] OLS 40 152B8232 152B8253 7 [101.R.20] OLS 80 152B8257 152B8260 10 [145] 1.63] OLSA 40 152B8041 152B8042 7 [101.20] OLS 80 152B8256 152B8268 7 [101.63] OLSA 80 152B8047 - 4 [58] 2.5] 170 [2465] 4. EF: 1 1/16 .18 UNF P/EF: 7/8 .0 [2.20] OLS 40 152B8233 152B8254 10 [145] 1.L: G 3/8 P/EF: G 1/2 Weight kg [lb] US version T.L: 9/16 .0 [2.1 [4. OSPC.1 [4.20] OLS 80 152B8261 - 4 [58] 1. EF: 1 1/16 .63] OLS 120 152B8133 152B8144 10 [145] 2.4 [9.63] OLS 160 dynamic for OSPB.1 [4. OSPD and OSPL LS dynamic Priority valve Code numbers Connections Control spring pressure bar [psi] Pilot pressure relief valve bar [psi] Weight kg [lb] European version LS. EF.16 UNF P.0 [2.20] OLS 80 152B8258 7 [101.5] 1. CF: G 1/2 OLS 80 152B8259 OLS 120 dynamic for OSPB. OSPD and OSPL LS dynamic Priority valve Code numbers Connections Control spring pressure bar [psi] Weight kg [lb] 7 [101.1 [4. OSPD and OSPL LS dynamic Priority valve Code numbers Connections European version LS: G 1/4 CF: G 1/2 P.0 [2.4 [9.20] 11007611 • Rev EA • September 2014 53 . OSPC.5] 170 [2465] 4. CF: G 1/2 OLS 40 152B8031 10 [145] 1.20] Control spring pressure bar [psi] Weight kg [lb] European version LS: G 1/4 P. T: G 1/4 CF: G 1/2 P. T: 1/16 -20 UNF CF: 3/4 . OSPC.7] OLS dynamic priority valves for OSPF LS and OSPU LS dynamic steering units OLS 40 dynamic and OLS 80 dynamic Priority valve Code numbers Connections Control spring pressure bar [psi] Weight kg [lb] European version LS: G 1/4 P.4 [9.12 UNF OLS 160 152B8159 152B8154 7 [101. EF: G 3/4 US version LS: 7/16 -20 UNF CF: ¾ .Technical Information OSPB/C/F/D/L LS Steering Units.7] OLS 160 152B8161 152B8156 7 [101.12 UNF OLS 120 152B8132 152B8143 7 [101.4 [9.7] OLS 160 152B8105 - 12 [174] 170 [2465] 4.4 [9.5] 210 [3045] 4. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 80 dynamic with low pressure drop (P-EF) spool for OSPB.5] 1. OSPC. EF: 1 1/16 .7] OLS 160 152B8160 152B8155 10 [145] 170 [2465] 4.16 UNF P.7] OLS 160 152B8162 152B8157 10 [145] 210 [3045] 4. EF: G 3/4 US version LS. OLS Priority Valves. EF.5] 2.0 [2. 5] none 4.0 [2. T: G¼ CF: G ½ P. OLS Priority Valves. CF: G 3/4 OLS 120 152B8147 OLS 160 dynamic Priority valve Code numbers Connections European version LS: G 1/4. EF.7] OLSP static and dynamic Priority valve Code numbers Connections European version LS: G¼ CF: G 3/8 EF: G ½ Control spring pressure bar [psi] Weight kg [lb] OLSP 80 static 152B5002 4 [58] 1.4 [9.5] 1.63] Control spring pressure bar [psi] Pilot pressure relief valve bar [psi] Weight kg [lb] Connections European version LS: G 1/4.7] OLS 160 152B8113 10 [145] none 4. CF: G 3/4 OLS 160 152B8158 7 [101. CF: G 1/2 P. black painted Priority valve Code numbers Connections European version LS.5] 2. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 120 dynamic Priority valve Code numbers Control spring pressure bar [psi] Weight kg [lb] 7 [101.1 [4.0 [2.9 [13.0] . EF: G 1 OLS 320 54 11006593 11007611 • Rev EA • September 2014 Control spring pressure bar [psi] Pilot pressure relief valve bar [psi] Weight kg [lb] 7 [101. EF.2] OLS 320 dynamic in-line/stand alone with pilot pressure relief valve. CF: G 1/2 P.2] OLSP 80 dynamic for OSPF and OSPU 152B5201 7 [101.5] 1.4 [9.2] OLSP 80 dynamic 152B5200 7 [101.Technical Information OSPB/C/F/D/L LS Steering Units.5] 170 [2465] 5.0 [2. EF: 15/16 . 11007611 • Rev EA • September 2014 55 . other control spring pressure and/or other PP connection.12 UN OLS 320 11007475 OLS 320 for EHPS: look in EHPS catalogue 520L0521 If you require other port connections. and tick off the desired specifications.Technical Information OSPB/C/F/D/L LS Steering Units. OLS Priority Valves.20 UNF CF: 11/16 .0] US version LS: 7/16 .9 [13. then consult the Danfoss Sales Organization. go to the survey on page 50.12 UN P. black painted Priority valve Code numbers Connections Control spring pressure bar [psi] Weight kg [lb] 10 [145] 5. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 320 dynamic in-line/stand alone without pilot pressure relief valve. PP.S** Ports.O*** +S** T. PP.S** G: CF: G½ .S** 5. EF: 7/8 .20 UNF .O*** +S** Metric: CF: M18 • 1.O*** +S** LS: M12 • 1.16 UNF . EF: 1 5/16 .16 UNF . L.5 .O*** LS.14 UNF .12 UN .16 UNF .5 .16 UNF . OLSP 80) PP connection Internal Ports.12 UN .O*** UNF 1: CF: 3/4 . T: G¼ . L. PP. OLS Priority Valves.12 UN . R : 9/16 . EF: M22 • 1.O*** UNF: P.Technical Information OSPB/C/F/D/L LS Steering Units.20 UNF .16 UNF .O*** +S** LS: M12 • 1.O*** UNF 1: CF: 3/4 . PP. EF:15/16 . T: 7/16 .O*** +S** P. bar 4 (only OLS 80. pcs/year OLS 40 Load sensing Static type Completed by Date Pump flow to OLS/OLSA at max.18 UNF . PP.O*** +S** P.5 . l/min [USgal/min] Priority valve OLSA 40 type OLSA 80 Potential. OLSA G: P.O*** +S** Metric: CF: M18 • 1.O*** +S** EF: 7/8 .5 .O*** Ports.12 UNF . R: M18 • 1. 160.O*** LS: 7/16 . P-EF (only OLS/OLSA 80 dynamic) Control spring. EF: G¾ . PP: G¼ .O*** Ports. PP.20 UNF .O*** UNF: CF: 3/4 .O*** UNF: CF: 3/4 .S** G: LS: G½ .S** 80 (P: square G: CF: G3/8 . OLS 320 in-line P. CF. OLS 40/80 P.O*** +S** P. EF: G½ . EF: 11/16 .S** G 2: CF: G¾ .O*** RV-bar OLS 160 OLS 320 80 Unit black painted Yes 90 100 110 120 140 170 190 200 210 Other settings No relief valve bar No Ports: PP-port only exists when external PP connection is used.S** EF: M22 • 1. EF: 7/8 .O*** Ports.S** P.20 UNF .12 UN .S** P.O*** LS : 7/16 .20 UNF .14 UNF . EF: G½ . 120. T: 7/16 . T: 7/16 . L.S** P. T: G¼ . T-port only exists for OLS 160 and OLS 320 with integrated pilot pressure relief vlave (RV) O*: O-ring chamfer on port connections 56 11007611 • Rev EA • September 2014 .O*** LS.5 .S** G: CF: G½ .O*** Ports.S** LS. OLS 120 P.5 . EF: M22 • 1.S** flange 35) LS: G¼ .S** T.O*** +S** LS: M12 • 1. EF: G¾ .20 UNF .5 .O*** LS: 7/16 . EF: M27 • 2 .S** G 1: CF: G½ .5 . OLS 160 P. R: G3/8 .20 UNF .O*** T. EF: G1 .S** LS. engine speed.O*** UNF 2: CF: 7/8 .O*** P. T: 7/16 .5 .5 -O*** +S** Metric 2: P. EF: 11/16 . L.5 (only OLS/OLSA 40/80) No CF cut-off (only for OLS 320 for flanging on EHPS) 7 10 12 (only OLS 160) 16 (only OLS 160) External (not OLSP) Metric 1: P. EF.S** P.O*** +S** Metric: CF: M18 • 1. EF: G1 .14 UNF .5 .S** LS.O*** P.O*** LS.O*** LS.O*** UNF 2: CF: 1 1/16 . OLSP EF: G½ .14 UNF . PP: G¼ . EF: 1 5/16 .S** LS. T. l/min [USgal/min] OLS 80 OLS 120 Dynamic OLS 160 OLSP 80 OLS 320 in-line Dynamic for OSPF and OSPU steering unit Spool type Standard Low pressure drop. OSQ Flow Amplifiers Priority Valves OLSA and OLS Specification table for non catalogue numbers of Danfoss Priority Valves Your company Name Vehicle Your application Pump flow to OLS/OLSA at idle. R: M18 • 1.14 UNF .O*** UNF: CF: 3/4 . Pressure drop P-EF for static priority valves OLSA/OLS 40 P-EF P-EF psi bar 200 14 175 12 150 10 125 100 75 50 10 bar 145 psi 7 bar 102 psi 8 4 bar 58 psi 6 4 25 2 0 0 min 0 0 5 1 10 2 15 3 4 20 5 25 6 30 7 8 35 9 40 10 Qp l/min Qp US gal/min 152B139. 7.54] 300 [4351] 280 [4061] -- 280 [4061] 40 [580] 280 [4061] Pressure drop in priority valves This data comes from measurements on a representative sample of priority valves from production. OLS Priority Valves. Measurement made when pressure on the LS connection is zero (steering unit in neutral position). pressure on connections Priority valve Rated flow to Pconnection Max.57] 250 [3625] 240 [3480] 280 [4061] 240 [3480] 20 [290] -- OLSA 80 80 [21. OSQ Flow Amplifiers Priority Valves OLSA and OLS S**: Spot face around port connections An alternative way to specify a variant is to state an existing code number and add the modifications.70] 250 [3625] 240 [3480] -- 240 [3480] -- 210 [3045] OLS 160 160 [42. EF CF L.13] 250 [3625] 240 [3480] 280 [4061] 240 [3480] 20 [290] -- OLS 40 40 [10.27] 350 [5076] 240 [3480] -- 240 [3480] 15 [217] 210 [3045] OLSP 80 80 [21. 145 or 174 psi] apply when pressure on the EF connection is zero. The minimum curves apply when the pressure on the EF connection is higher than the actual control spring pressure. 101.13] 250 [3625] 240 [3480] -- 240 [3480] -- 210 [3045] OLS 120 120 [31.11 11007611 • Rev EA • September 2014 57 .57] 250 [3625] 240 [3480] -- 240 [3480] -- 210 [3045] OLS 80 80 [21. R LS T PP l/min [US gal/min] bar [psi] bar [psi] bar [psi] bar [psi] bar [psi] bar [psi] OLSA 40 40 [10. The curves for control spring pressure of 4 .13] 280 [4061] 240 [3480] -- 240 [3480] -- -- OLS 320 320 [84. Code number of basic steering unit: __________________________________________________ Requested modifications: _______________________________________________________________________ Technical data Max. Oil with viscosity of 21 mm²/s at 50 °C [102 SUS at 122 °F] was used during measuring. 10 or 12 bar [58. you would like to have implemented in the basic steering unit.Technical Information OSPB/C/F/D/L LS Steering Units. pressure on connections P. Technical Information OSPB/C/F/D/L LS Steering Units.11 OLS 120 P-EF psi 225 P-EF bar 16 200 14 175 12 150 10 125 100 75 50 25 0 10 bar 145 psi 7 bar 102 psi 8 6 min 4 2 0 0 0 10 20 30 5 40 10 50 60 15 70 80 20 90 100 25 110 120 30 Qp l/min Qp US gal/min 152B165.11 58 11007611 • Rev EA • September 2014 . OLS Priority Valves. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLSA/OLS 80 P-EF psi 225 P-EF bar 16 200 14 175 12 150 10 125 100 75 50 10 bar 145 psi 7 bar 102 psi 4 bar 58 psi min. 8 6 4 25 2 0 0 0 0 10 20 2 4 30 6 40 8 10 50 12 60 14 70 16 Qp 80 18 l/min Qp US gal/min 20 152B80. 10 11007611 • Rev EA • September 2014 59 .Technical Information OSPB/C/F/D/L LS Steering Units. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 160 P-EF psi P-EF bar 20 275 12 bar 174 psi 18 250 225 16 200 14 175 12 150 10 125 10 bar 145 psi 7 bar 102 psi min 8 100 6 75 50 4 25 2 0 0 0 10 0 20 30 40 5 50 10 60 70 15 80 90 20 100 110 25 120 130 30 140 35 150 Qp l/min 160 Qp US gal/min 40 152B166. OLS Priority Valves.10 Pressure drop P-EF for dynamic priority valves OLSA/OLS 40 P-EF P-EF psi bar 225 16 200 14 175 12 150 10 125 100 75 50 10 bar 145 psi 7 bar 102 psi 8 4 bar 58 psi 6 4 25 2 0 0 min 0 0 5 1 10 2 15 3 4 20 5 25 6 30 7 8 35 9 40 10 Qp l/min Qp US gal/min 152B174. OSPD. OSPL LS Dynamic B: OLS 120 Dynamic for OSPF LS Dynamic and for OSPU LS Dynamic 60 11007611 • Rev EA • September 2014 . OSPC. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLSA/OLS 80 P-EF P-EF psi bar 20 275 10 bar 145 psi 18 250 225 16 200 14 175 12 150 10 125 A+B 7 bar 102 psi 4 bar 58 psi A+B 100 min A+B 8 min 6 75 50 4 25 2 0 0 A B 0 10 0 20 2 4 30 6 40 8 10 50 12 60 14 70 16 Qp l/min 80 18 Qp US gal/min 20 152B175.10 A: OLS/OLSA 80 Dynamic for OSPB.Technical Information OSPB/C/F/D/L LS Steering Units. OSPD.10 A: OLS 120 Dynamic for OSPB. OSPQ. OLS Priority Valves. OSPF. OSPQ. OSPL LS Dynamic B: OLS/OLSA 80 Dynamic with low pressure drop (P-EF) spool for OSPB. OSPL LS Dynamic OLS 120 P-EF psi P-EF bar 20 275 250 225 16 200 14 175 12 150 10 125 8 100 75 50 25 0 10 bar 145 psi 7 bar 102 psi 18 7 bar 102 psi A B A min 6 4 2 A+B 0 0 0 10 20 5 30 40 10 50 60 15 70 80 90 20 100 25 110 120 30 Qp l/min Qp US gal/min 152B176. OSPQ. OSPC. OSPD. OSPC. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 160 P-EF psi P-EF 450 bar 32 400 28 350 24 300 250 200 150 12 bar 174 psi A 20 B A 16 12 100 8 50 4 0 0 10 bar 145 psi 7 bar 102 psi 7 bar 102 psi min A A+B 0 10 20 0 30 40 5 50 10 60 70 15 80 90 20 100 110 25 120 30 130 140 35 150 160 Qp l/min Qp US gal/min 40 152B177. OSPL LS Dynamic B: OLS 160 Dynamic for OSPF LS and for OSPU LS Dynamic Pressure drop P-EF for OLSP static priority valves OLSP 80 P-EF P-EF psi 175 bar 12 150 10 125 7 bar 102 psi 4 bar 58 psi min 8 100 75 50 6 4 25 2 0 0 0 10 0 2 20 4 30 6 40 8 50 10 60 12 70 14 80 16 Qp l/min Qp 18 US gal/min 152-181. OSPD.10 A: OLS 160 Dynamic for OSPB.10 11007611 • Rev EA • September 2014 61 .Technical Information OSPB/C/F/D/L LS Steering Units. OLS Priority Valves. OSPC. 6 4 25 2 0 0 0 20 40 0 5 10 60 15 80 20 100 25 120 30 140 35 160 40 180 45 200 50 55 220 60 240 65 260 70 280 300 75 80 Qp 320 l/min Qp 85 US gal/min 152B185.Technical Information OSPB/C/F/D/L LS Steering Units. OSPD.10 A: OLSP 80 Dynamic for OSPB. OSQ Flow Amplifiers Priority Valves OLSA and OLS Pressure drop P-EF for OLSP dynamic priority valves P-EF P-EF psi 175 bar 12 150 10 125 7 bar 102 psi B 4 bar 58 psi A 8 min 100 6 A 75 50 4 25 2 0 0 A+B 0 10 0 2 20 30 4 40 6 8 50 60 10 12 70 14 80 Qp l/min Qp 18 US gal/min 16 152-182. OSPL LS Dynamic B: OLSP 80 Dynamic for OSPF LS and for OSPU LS Dynamic Pressure drop P-EF for OLS 320 static priority valves OLS 320 P-EF psi 250 225 P-EF bar 18 200 14 175 12 150 10 125 8 100 75 50 10 bar 145 psi 16 7 bar 102 psi min. OSPC. OLS Priority Valves.10 62 11007611 • Rev EA • September 2014 . The pilot pressure relief valve in OLS 160/320 operates with the priority valve spool in the OLS 160/320 to limit the maximum steering pressure P-T measured across the steering unit ports. OLS 160:The pilot pressure relief valve is set when an oil flow of 80 l/min [21 US gal/min] is supplied to OLS 160. OLS 160 and OLS 320: Setting tolerance: rated value +10 bar [145 psi] OLS 160 P-T psi 2800 P-T bar 190 2700 2600 2500 180 170 2400 2300 2200 0 160 150 0 0 0 10 20 5 30 40 50 10 60 15 70 80 20 90 100 25 110 30 120 130 35 140 150 40 160 Qp l/min Qp US gal/min 152B141.11 11007611 • Rev EA • September 2014 63 . OLS 320:The pilot pressure relief valve is set when an oil flow of 40 l/min [11 US gal/min] is supplied to OLS 320. normally steering unit type OSPL. OSQ Flow Amplifiers Priority Valves OLSA and OLS Pressure drop P-EF for OLS 320 dynamic priority valves OLS 320 P-EF psi 450 P-EF bar 30 10 bar 145 psi 400 350 300 25 7 bar 102 psi 20 250 200 150 15 10 100 min 5 50 0 0 0 20 40 0 5 10 60 15 80 20 100 25 120 30 140 35 160 40 180 45 200 50 55 220 60 240 65 260 70 280 300 75 80 Qp 320 l/min Qp 85 US gal/min 152B186. OLS Priority Valves.10 OLS 160 and OLS 320. Qp) characteristics OLS 160 and OLS 320 with pilot pressure relief valves are used in connection with Danfoss steering units without pilot pressure relief valve.Technical Information OSPB/C/F/D/L LS Steering Units. The pilot pressure relief valve protects the steering unit against excessive pressure.T. pilot pressure relief valve (P . Technical Information OSPB/C/F/D/L LS Steering Units. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 320 HP-HT HP-HT psi 3000 2900 bar 210 200 2800 2700 190 2600 180 2500 2400 2300 2200 2100 0 170 160 150 Qp 0 0 0 40 10 80 20 120 30 160 40 200 50 240 60 280 70 320 l/min 80 Qp US gal/min 152B187.10 Qp = Pump flow 64 11007611 • Rev EA • September 2014 . OLS Priority Valves. 73] P T X Y 11007611 • Rev EA • September 2014 152B81.14] Y R L 120 [4.72] 7 [0.99] 44 [1.28] X 87 [3.43] EF EF R/CF L 20 [0.12 65 .79] 55 [2.57] 76 [2.14] 20 [0.Technical Information OSPB/C/F/D/L LS Steering Units.17] 29 [1. OSQ Flow Amplifiers Priority Valves OLSA and OLS Dimensions OLSA 44 [1. OLS Priority Valves.43] T P 87 [3.73] Y 29 [1.79] 40 [1. max. 1. OLS Priority Valves.5 ISO 6149. EF: G 1/2 w.5 ISO 6149 max. L. x = 34 mm [1.14 in].57 in] deep x = 29 mm [1. OSQ Flow Amplifiers Priority Valves OLSA and OLS European version: US version: P.7 mm [0.18 UNF O-ring boss 12 mm [0. y = 25 mm [0. L.5 mm [0.Technical Information OSPB/C/F/D/L LS Steering Units.5 mm [0.50 in] deep y = 34 mm [1. 1.47 in] deep 12. spot face 7/8-14 UNF O-ring boss 14 mm [0. max.5 mm [0. 1. 1.5 ISO 6149. 1.61 in] deep x = 34 mm [1.34 in]. max.34 in].06 in] deep or M18 x 1.06 in] deep 15 mm [0. 15.06 in] deep 14.7 mm [0. max.06 in] deep 66 11007611 • Rev EA • September 2014 .98 in]. EF: P.66 in] deep x = 34 mm [1. spot face 9/16 .5 mm [0. R: G 3/8 w. R: T.59 in] deep y = 29 mm [1. max.5 mm [0.34 in]. max.5 mm [0.34 in]. 1.06 in] deep or M22 x 1.5 mm [0.14 in].55 in] deep 16.5 mm [0.5 mm [0.06 in] deep or M18 x 1. 1.06 in] deep T. 61] 22 [0.335] 19.7 [0.59 in] deep 15 mm [0.3 [1.59 in] deep x = 29 mm [1. max.5 [0. OLS 80 X 40. max. 1.87] Z Y LS EF CF Ø8.3 [0. spot face 7/8 .14 in].Technical Information OSPB/C/F/D/L LS Steering Units.59 in] deep.47] 19. spot face 3/4-16 UNF O-ring boss 11007611 • Rev EA • September 2014 67 .799] X 39 [1. EF: P.05] deep or M22 x 1.98] 40. x = 34 mm [1.3 [0. OLS Priority Valves.5 mm [0. 1 mm [0.11 European version: US version: P.776] P PP 41 [1. 1.14 in].06 in] deep max.14 UNF O-ring boss 15 mm [0. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 40. x = 34 mm [1.587] 42 [1. EF: G 1/2 w.5 ISO 6149 15 mm [0.7 [0.350] Ø8.3 [1.04 in] deep CF: CF: G 1/2 w.9 [0.34 in].587] 25 [0.54] 152B136.776] 20.65] 139 [5. 14 in].5 ISO 6149 max.5 mm [0. 1.04 in] deep 12. 1 mm [0. max.55 in]deep 14. 1 mm [0. z = 22 mm [0.Technical Information OSPB/C/F/D/L LS Steering Units. 1. OLS Priority Valves. y = 30 mm [1. max.5 mm [0.04 in] deep LS: LS: G 1/4 w. OSQ Flow Amplifiers Priority Valves OLSA and OLS 14 mm [0.3 mm [0.05 in] deep 12 mm [0. y = 29 mm [1.06 in] deep or M18 x 1. spot face 7/16-20 UNF O-ring boss 12.5 ISO 6149 max. 1 mm [0.5 mm [0.3 mm [0.83 in]. z = 21 mm [0.18 in].04 in] deep or M12 x 1.14 in].49 in] deep z = 21mm [0.83 in].49 in] deep 12.86 in] 0 mm deep 68 11007611 • Rev EA • September 2014 .49 in] deep. max.47 in] deep.5 mm [0.56 in] deep y = 29 mm [1. 343] 56 [2.34 in].60] PP 80 [3.78] 53 [2.12 UN O-ring boss x = 42 mm [1.5 mm [0.06 in] deep y = 29 mm [1.09] CF Z 10 [0.5 mm [0.10 in] deep or M18 x 1. 2. x = 41mm [1. OLS Priority Valves.1 [0. max.16 UNF O-ring boss y = 34 mm [1.20] LS EF P Ø9. spot face 3/4 .736] 66 [2.18 in]. 11007611 • Rev EA • September 2014 69 .358] Ø8.343] Z 18. max. EF: G 3/4 w. OSQ Flow Amplifiers Priority Valves OLSA and OLS OLS 120 X X 24 [0.14 in].61 in].10 in] deep CF: CF: G 1/2 w. 1. 1. spot face 1 1/16 .5 ISO 6149 max.15] 96 [3.358] Ø8. max.57 in].11 European version: US version: P.49] 140 [5.Technical Information OSPB/C/F/D/L LS Steering Units.5 mm [0.51] Y 152B173.7 [0. 2.512] 114 [4.39] 38.7 [0.06 in] deep x = 40 mm [1. EF: P.7 [0.94] Ø9. 2.1 [0. y = 30 mm [1.10 in] deep or M27 x 2 ISO 6149 max.5 mm [0.65 in].5 mm [0.4 [1. 10 in] deep or G 1 w. 2.5 ISO 6149 11.75 in] 0 mm deep OLS 160 Y X 32 [1.95] U 23 [0.75 in] z = 19 mm [0.34] 9.11 European version: US version: P.20 UNF O-ring boss 12 mm [0.34] 35 [1.26] 178 [7. OLS Priority Valves.48] 65 [2. OSQ Flow Amplifiers Priority Valves OLSA and OLS max.5 mm [0.91] EF Z 125 [4. PP: G 1/4 w.5 mm [0.10 in] deep or 1 5/16 .12 UNF Oring boss x = 47 mm [1.01] 75 [2.5 mm [0.85 in].10 in] deep LS. spot face 1 1/16-12 UNF O-ring boss x = 42 mm [1.5 [1.Technical Information OSPB/C/F/D/L LS Steering Units. 2.45 in] deep z = 19 mm [0. 2.36] 8.65 in].56] 130 [5.26] T 35 [1.75 in] 0 mm deep 0 mm deep or M12 x 1.92] PP LS 62.93 in].5 mm [0.36] 8.38] Z 32. spot face 7/16 . spot face max. PP: LS. x = 41 mm [1.5 [2.28] 63 [2. EF: P.12] X 152B138.61 in]. x = 49 mm [1. z = 19 mm [0. EF: G 3/4 w. 70 11007611 • Rev EA • September 2014 .7 [0.1 [0.5 mm [0.45 in] deep. max.7 [0.47 in] deep 11.38] P CF 9.26] 32 [1.1 [0.46] 32 [1. Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Priority Valves OLSA and OLS max 2.5 mm [0.10 in] deep max. 2.5 mm [0.10 in] deep CF: CF: G 1/2 w. spot face 3/4-16 UNF O-ring boss y = 34 mm [1.34 in], y = 32 mm [1.26 in], max. 2.5 mm [0.10 in] deep or G 3/4 w. spot face max. 2.5 mm [0.10 in] deep y = 38 mm [1.50 in], 7/8 - 14 UNF O-ring boss max. 2.5 mm [0.10 in] deep y = 30 mm [1.18 in], max. 2.5 mm [0.10 in] deep LS, PP, T: LS, PP, T: G 1/4 w. spot face 7/16 - 20 UNF O-ring boss 12 mm [0.47 in] deep 11.5 mm [0.45 in] deep z = 22.8 mm [0.89 in], z = 22,8 mm [0.89 in], max. 1 mm [0.04 in]deep max. 1.5 mm [0.06 in] deep u = 25 mm [0.98 in] u = 21 mm [0.83 in], max. 1.5 mm [0.06 in] deep max. 1.6 mm [0.06 in] deep 11007611 • Rev EA • September 2014 71 Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Priority Valves OLSA and OLS OLSP 80 31.2 [1.228] 38 [1.50] 43.5 [1.713] Ø24.4 [0.961] 1.88 [0.74] deep 24.7 [0.972] 24.7 [0.972] 33 [1.30] 84 [3.31] X 32 [1.26] 19.5 [0.768] Y 38 [1.50] CF 20 [0.89] 52 [2.05] 33 [1.30] 91 [3.58] Ø6.5 [0.26] Ø11 [0.04] 25 [0.98] LS EF 24 [0.94] 152-180.11 European version: US version: CF: CF: G 3/8 w. spot face 3/4-16 UNF O-ring boss 15 mm [0.59 in] deep 15 mm [0.59 in] deep x = ø28, max. 1.5 mm [0.06 in] deep or M18 • 1.5 ISO 6149 x = ø29 [1.14 in] max. 1.5 mm [0.06 in] deep 15 mm [0.59 in] deep y = ø29, max. 1.5 mm [0.06 in] EF: EF: G 1/2 w. spot face 7/8 - 14 UNF O-ring boss 15 mm [0.59 in] deep 16.7 mm [0.66 in] deep y = ø34 [1.34 in] 72 11007611 • Rev EA • September 2014 Technical Information OSPB/C/F/D/L LS Steering Units, OLS Priority Valves, OSQ Flow Amplifiers Priority Valves OLSA and OLS y = ø34, max. 1.5 mm [0.06 in] or M22 • 1.5 ISO 6149 max. 1.5 mm [0.06 in] deep 15 mm [0.59 in] deep x = ø34, max. 1.5 mm [0.06 in] LS: LS: G 1/4 w. spot face 7/16 - 20 UNF O-ring boss 12.5 mm [0.49 in] deep or M12 • 1.5 ISO 6149 12.5 mm [0.49 in] deep 12.5 mm [0.49 in] deep OLS 320 in-line 236 [9.29] 47.5 [1.870] 33 [1.30] 47.5 [1.870] 3xØ20 [0.79] 5 [0.20] 48 [1.89] 4 [0.16] 7 [0.28] 59 [2.32] 2xØ16 [0.63] 3xØ8.5 [0.335] Y 63.5 [2.500] 14 [0.55] EF LS PP 78 [3.07] T 22.5 [0.886] 47.5 [1.870] 117.5 [4.626] P Z 52.5 [2.067] CF X 47 [1.85] X 80 [3.15] 150H26.10 European version: US version: P, EF: P, EF: G 1 w. spot face 1 5/16-12 UN O-ring boss 11007611 • Rev EA • September 2014 73 T: G 1/4 w.85 in] x = ø49 mm [1. spot face 7/16-20 UNF O-ring boss T: G 1/4 w. PP.01 in] deep LS.04 in] deep max 0.2 mm [0. OSQ Flow Amplifiers Priority Valves OLSA and OLS x = ø47 mm [1.61 in] max 2.2 mm [0.Technical Information OSPB/C/F/D/L LS Steering Units.5 mm [0.01 in] deep CF: CF: G 1/2 w.34 in] y = ø41 mm [1.2 mm [0. PP: LS.93 in] max 1 mm [0.18 in] max 0. spot face 1 1/16-12 UN O-ring boss y = ø34 mm [1.06 in] deep 74 11007611 • Rev EA • September 2014 . OLS Priority Valves.5 mm [0.01 in] deep or 3/4-16UNF O-ring boss y = ø30 mm [1.98 in] max 1. spot face z = ø25 mm [0.10 in] deep max 0. Technical Information OSPB/C/F/D/L LS Steering Units. OSQA static OSQB static CR CL P L CR CL R T LS P L R T LS EF PP EF PP HP HP HT 150F55.10 75 .10 11007611 • Rev EA • September 2014 EF PP T HP LS HT 150F54. OSQB and OSQB/OLSQ Versions OSQA and OSQB static Flow amplifier OSQ is used in steering systems of large vehicles and vessels that need high oil flow for their steering.10 HT 150F56.10 CR CL CL L R P CR L R P EF PP T HP LS HT 150F69. OLS Priority Valves. A steering system of this nature consists of a steering unit and a flow amplifier. OSQ Flow Amplifiers Flow Amplifiers OSQA. OSQB and OSQB/OLSQ OSQB dynamic with OLSQ priority valve for emergency steering OSQB CR CL OSQB CR CL L P L R T R P EF EF PP LS HP PP min.11 Code numbers and weights OSQA and OSQB static flow amplifiers for load sensing static steering units These flow amplifiers have to be used in connection with steering units type OSPBX LS or OSPLX LS.Technical Information OSPB/C/F/D/L LS Steering Units. 76 11007611 • Rev EA • September 2014 . 102 psi] min. Flow amplifier Code numbers Setting pressures Connections: see “dimensions” Pilot pressure Shock valves relief valve bar [psi] bar [psi] European version US version Control spring pressure bar [psi] Weight kg [lb] OSQA 4 150F0040 150F0043 170 [2465] 230 [3335] 7 [101] 29 [64] OSQA 5 150F0041 150F0044 170 [2465] 230 [3335] 7 [101] 29 [64] OSQA 8 150F0042 150F0045 170 [2465] 230 [3335] 7 [101] 29 [64] OSQB 4 150F0030 150F0053 170 [2465] 230 [3335] 7 [101] 29 [64] OSQB 5 150F0031 150F0054 170 [2465] 230 [3335] 7 [101] 29 [64] OSQB 8 150F0032 150F0055 170 [2465] 230 [3335] 7 [101] 29 [64] OSQB 10 - 150F0094 170 [2465] 260 [3770] 7 [101] 29 [64] OSQB/OLSQ dynamic flow amplifier for load sensing dynamics steering units OSQB with OLSQ has no pilot pressure relief valve. 102 psi] LS HP T HT HT 4 bar [58 psi] 4 bar [58 psi] P OLSQ P P DR P OLSQ 150F74. 7 bar [min. 7 bar [min. OSQ Flow Amplifiers Flow Amplifiers OSQA.11 DR 150F73. OLS Priority Valves. which has incorporated pilot pressure relief valve Flow amplifier Code numbers Setting pressures Shockvalves bar [psi] Control spring pressure bar [psi] Weight kg [lb] Connections see “dimensions” European version OSQB 8/OLSQ 150F8010 260 [3770 psi] 7 [101.Technical Information OSPB/C/F/D/L LS Steering Units. OSQ Flow Amplifiers Flow Amplifiers OSQA.5] 32 [70.6] If you require other amplification factors. please fill in the order form on page 68 and contact the Danfoss Sales Organization. 11007611 • Rev EA • September 2014 77 . OLS Priority Valves. OSQB and OSQB/OLSQ This flow amplifier has to be used in connection with steering unit type OSPCX LS. other valve settings or other control spring pressures. HT. CL: G 3/4 P. T. EF. you would like to have implemented in the basic flow amplifier. EF. L. CR: 1 in SAE flange P.1 16. T.5 Dynamic 10 [145] 120 [1740] 16 [232] 140 [2030] 200 [2900] 170 [2465] 230 [3335] 210 [3045] 260 [3770] No relief valve (only OSQB/OLSQ) 270 [3916] An alternative way to specify a variant is to state an existing code number and add the modifications. OSQ Flow Amplifiers Flow Amplifiers OSQA. T. CR: 1 1/16 . L. R: G 1/2 PP. CL.12 UN P. T. l/min [US gal/min] OSQB 5 OSQB/OLSQ 8 9.20 UNF Ports. L. OSQB/OLSQ G: (European version) HP. l/min [US gal/min] Flow amplifier type OSQA Amplification factor 4 Load sensing type Static Control spring bar 7 [101] PP-connection Internal External Ports. R: ¾ . LS: 7/16 . CL.Technical Information OSPB/C/F/D/L LS Steering Units. L.16 UNF PP. LS: G 1/4 UNF: US version HP. OLS Priority Valves.: 1 1/4 in SAE flange HT. CL. LS: G 1/4 UNF: US version HP. CR: 1 in SAE flange POSQ. LS: 7/16 . CR: 1 in SAE flange P.20 UNF Ports. then send to your Danfoss Sales Organization Your company Name Vehicle Potential pcs/year Completed by Your application Pump flow to OSQ at idle.16 UNF PP. EF: 1 ¼ in SAE flange HT. R: G 1/2 PP. bar [psi] 165 [2393] Back pressure valve Yes (Only OSQB) No Unit black painted Yes No Date Pump flow to OSQ at max engine speed. R: G 1/2 PP. CL. L. EF: 1 1/4 in SAE flange HT. CL. OSQB and OSQB/OLSQ Specification table for non catalogue numbers of Danfoss Flow Amplfiers Fill in your company data and place x’s in the table where appropriate. LS: G 1/4 Pilot pressure relief valve bar [psi] 100 [1450] Shock valves. POLSQ. T. OSQA G: European version HP. EF. HT. Code number of basic flow amplifier: __________________________ Requested modifications: _______________________________________________________________________________________ 78 11007611 • Rev EA • September 2014 . OSQB G: European version HP. R: 3/4 . OSQ Flow Amplifiers Flow Amplifiers OSQA. P.4] 280 [4061] 210 [3045] 15 [217. OLS Priority Valves.5] OSQB 400 [106] 280 [4061] 210 [3045] 10 [145] 15 [217. Oil with viscosity of 21 mm²/s [102 SUS] at 50 °C [122 °C] was used during measuring. Valve functions in the flow amplifiers The datas below come from measurements on a representative sample of flow amplifiers from production.Steering unit fication OSPBX/OSPCX LS factor 160 cm³/rev [in³/rev] 200 cm³/rev [in³/rev] OSPLX LS 315 cm³/rev [in³/rev] 400 cm³/rev [in³/rev] 520 cm³/rev [in³/rev] 2080 [127] OSQA 4 4 640 [39] 800 [49] 1260 [77] 1600 [98] OSQA 5 5 800 [49] 1000 [61] 1575 [96] 2000 [122] OSQA 8 8 1280 [78] 1600 [98] OSQA 10 9. OSQB and OSQB/OLSQ _______________________________________________________________________________________ __________________________________________________ Technical data Flow and pressure Flow amplifier Rated flow to HP-connection l/min [US gal/min] Max.14 UNC 55 ±5 [487 ±44] Tightening torque for fittings: Look in sub catalogue “General Steering Components” page 36. PP. Nm [lbf. R bar [psi] HT bar [psi] T bar [psi] OSQA 240 [63.16 UNC 40 ±5 [354 ±44] 7/16 .5 30 ±5 [265 ±44] 3/8 .5 1820 [111] 2640 [161] 630 cm³/rev [in³/rev] 800 cm³/rev [in³/rev] 2080 [127] 2520 [154] 3200 [195] 2000 [122] 2600 [159] 3150 [192] 4000 [244] 2520 [154] 3200 [195] 4160 [254] 2865 [175] 3640 [222] 3300 [201] Installation The flow amplifier has to be mounted on a flat surface.Technical Information OSPB/C/F/D/L LS Steering Units.1 1456 [89] OSQB 4 4 OSQB 5 5 OSQB 8 8 OSQB 10 9.1 OSQB 20 16. CL CR bar [psi] LS. L.in] M 10 x 1. 11007611 • Rev EA • September 2014 79 . pressure on connections HP. EF.5] Total displacement of Steering System Flow amplifier Ampli.5] 15 [217. Mounting screw Tightening torque. The pilot pressure relief valve in OSQ is set with an oil flow of 140 l/min [37 US gal/min] supplied to the HP connection. 80 11007611 • Rev EA • September 2014 .5 psi] apply when the pressure on the EF connection is zero OSQA HP-EF psi 150 HP-EF bar 10 7 bar 102 psi 125 8 100 6 min. OLS Priority Valves. OSQ Flow Amplifiers Flow Amplifiers OSQA. The minimum curves apply when the pressure on the EF connection is higher than the actual control spring pressure. The curves for control spring pressure of 7 bar [101. Qp) characteristic The pilot pressure relief valve protects the steering valve against excessive pressure. The pilot pressure relief valve together with the priority valve limit the maximum steering pressure HP-HT. 0 40 0 10 80 20 120 30 160 40 200 50 240 60 280 70 320 80 Qp 360 90 400 l/min 100 Qp US gal/min 150F63.11 OSQ pilot pressure relief valve (HP . Measurements were made when the pressure on the LS connection is zero (steering unit is in neutral position). For OSQA the setting values are valid for pump flow 140 l/min [37 US gal/min]. OSQB and OSQB/OLSQ Priority valve The priority valve is used in load sensing systems where the same pump supplies oil to both the steering system and working hydraulics. 75 4 50 25 2 0 0 0 20 40 0 60 80 10 100 20 120 140 160 30 180 40 200 Qp 240 l/min 220 50 60 Qp US gal/min 150F64.Technical Information OSPB/C/F/D/L LS Steering Units.10 OSQB HP-EF psi HP-EF 200 bar 14 175 12 150 125 100 75 7 bar 102 psi 10 8 6 50 4 25 2 0 0 min. The steering system always has first priority.HT. 11007611 • Rev EA • September 2014 81 . OSQ Flow Amplifiers Flow Amplifiers OSQA. The curves below are valid for rated settings 170 bar [2466 psi].Technical Information OSPB/C/F/D/L LS Steering Units. but compensated to match 240 l/min [63 US gal/min]. Setting tolerance: rated value +10 bar [+145 psi]. OLS Priority Valves. OSQB and OSQB/OLSQ For OSQB the setting values are valid for pump flow 240 l/min [63 US gal/min]: the setting is done at 140 l/min [37 US gal/min]. OSQA HP-HT HP-HT psi bar 190 2700 2600 2500 185 180 175 OSQA 170 2400 165 2300 2200 160 155 Qp 150 0 20 0 40 60 10 80 100 20 120 140 30 160 180 40 200 220 50 240 60 l/min Qp US gal/min 150F67.12 OSQB OSQB HP-HT HP-HT psi bar 2900 200 2800 190 2700 2600 2500 180 OSQB 170 2400 2300 2200 160 150 2100 140 Qp 0 40 80 120 160 200 240 280 320 360 400 l/min Qp 0 10 20 30 40 50 60 70 80 90 100 US gal/min 150F66. The pressure drop shown applies to the back pressure valve only.12 Back pressure valve The back pressure valve in (OSQB only) increases the capacity of the suction valves. 82 11007611 • Rev EA • September 2014 .64 US gal/min].Technical Information OSPB/C/F/D/L LS Steering Units.10 Shock valves The shock valves protect the flow amplifier against shock from external forces on the steering cylinders. HT-CR HT-CL psi 150 HT-CR HT-CL bar 10 8 100 6 50 4 2 0 0 0 0 10 20 5 30 40 10 50 60 15 70 80 20 90 100 25 110 30 120 130 35 140 150 40 Qp 160 l/min Qp US gal/min 150F35. The shock valves are set at 10 l/min [2. The capacity of the suction valves is increased in OSQB by the built-in back pressure valve. OLSQ’s priority valve will pass oil from the emergency steering pump across OLSQ’s P-connection to the flow amplifier’s HT tank connection. OSQB and OSQB/OLSQ ∆p ∆p psi 225 bar 15 200 175 150 10 125 100 75 5 50 25 0 0 0 40 0 80 10 20 120 160 30 40 200 240 50 60 280 70 320 80 Qp 360 90 400 l/min Qp US gal/min 100 150F68.5 psi] priority valve spring in OSQ) overrules the spring pressure in OLSQ (4 bar [58 psi] spring). OLS Priority Valves. Suction valves The suction valves ensure oil suction on the side of the steering cylinder pistons where in unfavorable conditions cavitation might occur. The shock valves in OSQA and OSQB limit the maximum pressure drop from CL to HT and from CR to HT. OSQ Flow Amplifiers Flow Amplifiers OSQA. Setting tolerance: rated value +20 bar [290 psi].11 Priority valve OLSQ for emergency circuit in OSQB/OLSQ When under normal steering conditions the stand-by pressure in the main circuit (minimum 7 bar [101. The curve shows the pressure drop from OLSQ’s P-connection to OSQ’s HT-connection with an active main pump and neutral positioned steering. POLSQHTOSQB psi 90 POLSQHTOSQB bar 6 80 70 5 60 4 50 40 30 20 10 0 3 2 1 Qp 0 0 0 10 20 30 5 40 10 50 60 15 70 80 20 90 100 l/min 25 Qp US gal/min 150F76. the stand-by pressure of OSQ’s priority valve in the main pump circuit disappears and relocates the spool in OLSQ to enable the oil from the emergency steering pump to enter the pump circuit in the OSQ. OSQ Flow Amplifiers Flow Amplifiers OSQA. The curve solely applies to OSQs without any back pressure valve in the tank line. OLS Priority Valves. OSQB and OSQB/OLSQ If the oil supply from the main pump should fail.Technical Information OSPB/C/F/D/L LS Steering Units.10 11007611 • Rev EA • September 2014 83 . 11 84 11007611 • Rev EA • September 2014 .8 [2.83] 129 [5. OLS Priority Valves.23] min.96] 74.22] 47 [1.Technical Information OSPB/C/F/D/L LS Steering Units.630] 82 [3.8 [5.68] 41 [1. OSQB and OSQB/OLSQ Dimensions OSQA 165 [6.631] Ø16.39] 31 [1.63] A Ø16. OSQ Flow Amplifiers Flow Amplifiers OSQA.018 [0.72] 150 [5.50] 153 [6.22] 86 [3.630] B 150.91] 149.8 [4.20] 125 [4.17] 68 [2.07] 120.94] 5 [0.7 [0.000 [0.631] Ø16.22] 31 [1.20] 5.3 [0.08] 121 [4.41] 285 [11.91] 17 [0.90] A 75.73] 119.02] 112 [4.2 [2.19] Ø16.2 [5.67] 16 [0.76] 56 [2.61] 150F36.92] 125 [4.92] 86 [3.000 [0.21] 4.2 [4.85] 78 [3.39] 55 [2.018 [0. 21 [0. HT. HT. L. OSQ Flow Amplifiers Flow Amplifiers OSQA.63 in] deep 11007611 • Rev EA • September 2014 85 . R: G 1/2 P. CR: G ¾ HP. R: ¾ .5. EF. LS: G 1/4 PP. OLS Priority Valves.5. EF.83 in]deep B: M10 x 1.63 in] deep B: 7/16 . 21 mm [0.83in] deep A: 7/16 .12 UN P. CR: 1 1/16 . 21 mm [0.14 UNC.16 UNF PP.Technical Information OSPB/C/F/D/L LS Steering Units. OSQB and OSQB/OLSQ European version: US version: HP. T. 16 mm [0. CL. L. CL.20 UNF A: M10 x 1. LS: 7/16 . 16 mm [0. T.14 UNC. 08] 121 [4.92] 125 [4.7 [2.72] 285 [11.17] 68 [2.91] 17 [0. OSQB and OSQB/OLSQ OSQB 165 [6.02] 112 [4.23] min.22] 47 [1.03] 52.2 [1.8 [2.19] 30.19] B 150.2 [2.22] 31 [1.61] 26.96] 74.50] 153 [6.000 [0.19] Ø16.10 86 11007611 • Rev EA • September 2014 .630] 82 [3.2 [1.06] 150F37.39] 26.03] 26.2 [1.4 [2.41] 120.000 [0.91] 149.631] Ø16.94] 5 [0.68] 41 [1.06] 55 [2.4 [2.2 [1.20] 125 [4.83] 129 [5.2 [4.76] 56 [2.21] 4.2 [1.018 [0.630] 78 [3.8 [5.3 [0.Technical Information OSPB/C/F/D/L LS Steering Units.73] 119.22] 86 [3. 21 [0.90] A 75.07] 30.92] 86 [3.67] 16 [0.018 [0.20] 5.31] 150 [5. OSQ Flow Amplifiers Flow Amplifiers OSQA.39] 31 [1.7 [0.8 [4.631] Ø16.85] 58.03] 52.2 [5. OLS Priority Valves.63] A Ø16. 5.83 in] deep A: 7/16 .63 in] deep B: 7/16 . EF: HP.16 UNC 18 mm [0. EF: 1 1/4 in SAE flange 1 1/4 in SAE flange 7/16-14 UNC 7/16 .Technical Information OSPB/C/F/D/L LS Steering Units. OSQB and OSQB/OLSQ European version: US version: HP.14 UNC.20 UNF A: M10 x 1. T. R: 3/4 . LS: G 1/4 PP. CL.14 UNC 18 mm [0.71 in] deep (8) HT. L. L.14 UNC. T. R: G 1/2 P.63 in] deep 11007611 • Rev EA • September 2014 87 .16 UNC 3/8 .71 in] deep (12) P. CL. 21 mm [0. CR: 1 in SAE flange 1 in SAE flange 3/8 .5.71 in] deep (8) 18 mm [0. CR: HT. 16 mm [0. 21 mm [0. OSQ Flow Amplifiers Flow Amplifiers OSQA. LS: 7/16 .71 in] deep (12) 18 mm [0.16 UNF PP. 16 mm [0. OLS Priority Valves.83 in] deep B: M10 x 1. 25] 30.20] 5.90] A 75.76] 56 [2.018 [0.06] 150F75.7 [2.8 [2.72] 58.10 88 11007611 • Rev EA • September 2014 .09] 41 [1.39] 31 [1.94] 5 [0.23] min. OSQ Flow Amplifiers Flow Amplifiers OSQA.63] A Ø16.000 [0.22] 31 [1.91] 149.631] Ø16.68] 52.21] 4.75] 150 [5.73] View X View X PDR 55 [2.06] 125 [4. OLS Priority Valves.2 [1.630] 82 [3.41] 17 [0.92] 125 [4.20] 27 [1.22] 86 [3.19] B 150.4 [2. 21 [0.3 [0.08] 121 [4.8 [4.61] 26.2 [5.2 [2.Technical Information OSPB/C/F/D/L LS Steering Units.19] 30.31] 146 [5.7 [0.22] 285 [11.4 [2.91] 174 [6.19] Ø16.73] 119.06] 171 [6.2 [1.17] 108 [4.67] 120.2 [1.07] 108 [4.8 [5.03] 68 [2.92] 86 [3.2 [1.03] 52. OSQB and OSQB/OLSQ OSQB with OLSQ 196 [7.631] Ø16.83] 129 [5.2 [1.000 [0.85] 16 [0.85] 158 [6.39] 26.03] 26.2 [4.22] 47 [1.72] 150 [5.25] 53 [2.91] 112 [4.018 [0.630] 78 [3.96] 74. 63 in] deep 11007611 • Rev EA • September 2014 89 .71 in] deep (8) HT.Technical Information OSPB/C/F/D/L LS Steering Units. EF: 1 1/4 in SAE flange 7/16 . OSQ Flow Amplifiers Flow Amplifiers OSQA. CR: 1 in SAE flange 3/8 . 16 mm [0.14 UNC 18 mm [0. R: G 1/2 PP.16 UNC 18 mm [0. PDR: G 1/4 A: M10 x 1. 21 mm [0. L.71 in] deep (12) POSQ. CL.5.5. T. POLSQ.83 in] deep B: M10 x 1. LS. OLS Priority Valves. OSQB and OSQB/OLSQ European version HP. Technical Information OSPB/C/F/D/L LS Steering Units. OSQ Flow Amplifiers 90 11007611 • Rev EA • September 2014 . OLS Priority Valves. OSQ Flow Amplifiers 11007611 • Rev EA • September 2014 91 .Technical Information OSPB/C/F/D/L LS Steering Units. OLS Priority Valves. We help OEMs around the world speed up system development.hydro-gear. This also applies to products already on order provided that such alterations can be made without changes being necessary in specifications already agreed. Building #22. China 201206 Phone: +86 21 3418 5200 Danfoss can accept no responsibility for possible errors in catalogues.danfoss. USA Phone: +1 515 239 6000 Danfoss Power Solutions GmbH & Co.com Valmova www. Hydraulic Power Steering Go to www. Denmark Phone: +45 7488 2222 Danfoss Power Solutions (Shanghai) Co.powersolutions. Building on our extensive applications expertise.com for further product information. Joysticks and Control Handles Microcontrollers and Software Open Circuit Axial Piston Pumps Orbital Motors Please contact the Danfoss Power Solution representative nearest you.danfoss. OHG Krokamp 35 D-24539 Neumünster. ensuring the best possible solutions for outstanding performance. Ltd. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. We specialize in providing state-of-the-art technology and solutions that excel in the harsh operating conditions of the mobile off-highway market. We offer expert worldwide support for our customers.daikin-sauer-danfoss. No.com Hydro-Gear www. And with an extensive network of Global Service Partners.com Local address: Turolla www. All trademarks in this material are property of the respective companies.turollaocg. brochures and other printed material. we work closely with our customers to ensure exceptional performance for a broad range of off-highway vehicles. Danfoss – Your Strongest Partner in Mobile Hydraulics. Pudong New District Shanghai. 2014 . so is Danfoss. Danfoss reserves the right to alter its products without notice.com Danfoss Power Solutions US Company 2800 East 13th Street Ames.. All rights reserved.com © Danfoss A/S.com Schwarzmüller-Inverter www. reduce costs and bring vehicles to market faster. Integrated Systems Wherever off-highway vehicles are at work.valmova. Germany Phone: +49 4321 871 0 Danfoss Power Solutions ApS Nordborgvej 81 DK-6430 Nordborg.Products we offer: • • • • • • • • • • • • • • • • Bent Axis Motors Closed Circuit Axial Piston Pumps and Motors Displays Electrohydraulic Power Steering Electrohydraulics Danfoss Power Solutions is a global manufacturer and supplier of high-quality hydraulic and electronic components.schwarzmuellerinverter. PLUS+1® GUIDE Proportional Valves Sensors Steering Transit Mixer Drives Comatrol www. 11007611 • Rev EA • September 2014 www.comatrol. IA 50010. 1000 Jin Hai Rd Jin Qiao.com Daikin-Sauer-Danfoss www. we also provide comprehensive global service for all of our components.