T H E A D V A N TA G E SSR-20J – the successor of the proven SR-20RII offers higher performance and additional machining possibilities in combination with a new design, improved ergonomics, and excellent price/performance ratio. SR-20J type N – the short turning version of the SR-20J. Conventional lathe operations benefit from proven star* advantages. Production costs for short-turned parts are further reduced through operation without a guide bush, short cut-offs and even shorter set-up times. Available as long turning or short turning version Rapid feed increased to 35 m/min 2 further drilling stations for deep-hole drilling up to 100 mm C axis on main and sub spindle - standard Compatible tool holders and programming for SR-20J (SR-20RII) and SR-20JN 2 SR-20J Main spindle Main spindle (headstock) Z axis C axis (standard) Tool post X axis Y axis Drive power Max.2 0 J N No guide bush with the SR-20J type N.000 rpm ZB axis XB axis C axis (standard) 2. machining diameter Max.2 0 J / S R.2 kW 20 mm (23 mm option) 8.7 kW 20 mm (23 mm option) 55 mm 10.2 kW 20 mm (23 mm option) 8.000 rpm 3.K I N E MAT I C S O F T H E S R.7 kW 20 mm (23 mm option) 205 mm 10. chucking diameter Sub spindle speed 2. headstock stroke Main spindle speed Sub spindle Sub spindle ZB axis XB axis C axis (standard) Drive power Max.000 rpm 3 .000 rpm SR-20JN Z axis C axis (standard) X axis Y axis 3. cross drilling. Sub spindle side ZB axis XB axis Main spindle side Z axis Sub spindle side Y axis Completely independent overlapped machining on front and rear side is possible. slotting. ZB axis XB axis 4 . Simultaneous back working with off-centre drilling. milling. Main spindle side Z axis X axis Y axis Off-centre drilling/tapping is possible at any time using the optional front drilling units.EQUIPMENT Working area of the SR-20J/JN. can be realised. A total of up to 30 tools are available including 14 power-driven tools. etc. Main spindle side X axis Z axis Y axis Main spindle side Z axis ZB axis XB axis Sub spindle side Slotting with steady unit which can hold disk cutters or blades up to 50 mm. Main/sub spindle simultaneous drilling with a counter-face drill sleeve. Main spindle side Z axis ZB axis Y axis XB axis Sub spindle side Slotting unit for backworking for cutters up to 40 mm (also available: slotting unit up to 50 mm) Sub spindle side ZB axis XB axis 5 .MACHINING EXAMPLES Front drilling unit with 2 stations for deep-hole drilling on main spindle side up to 100 mm and up to 300 bar high pressure. TO O L H O L D E R S Main spindle side Main spindle side Z axis X axis Y axis Z axis X axis Y axis Cross drilling unit ER16 also available in ER11 and ER20 2-spindle front drilling unit (ER11) (for main and sub spindle) also available as 3-spindle front drilling unit 331-50 661-59 3-spindle front drilling unit (ER16) (for main spindle) 661-51 also available as 2-spindle front drilling unit (ER16) SR-20J/JN TOOLS (BACKWORKING UNIT) Sub spindle side ZB axis XB axis Sub spindle side ZB axis XB axis Cross-machining (ER11) (for sub spindle) Slotting unit 181-45 182-47 6 . E U Main spindle side Z axis X axis Y axis 2-spindle skewed cross drilling unit (ER11) also available as 1-spindle skewed cross drilling unit (ER11) Polygon machining unit Ø 50 x 13 mm 182-03 541-91 Main spindle side X axis Z axis Y axis External thread whirling unit Slotting unit for cutter Ø 50 x 13 mm (for main and sub spindle) 681-72 541-54 7 . STA R -TO O LS .D E TA I L E D I N F O R M AT I O N I S AVA I LA B L E AT W W W. ACCESSORIES Standard accessories CNC control FANUC 18i/TB C axis control for the main and sub spindle Revolving guide bush unit (SR-20J) 6-station tool holder 5-station drive including 5 cross drilling units 4-station drilling tool holder for back machining Front drilling unit with 2 tools for deep-hole drilling 4-station backworking unit including drive Sub spindle Blow unit for sub spindle Parts conveyor Broken cut-off tool detector Parts ejection detector Central lubrication Worklight Special accessories Barstock gripping unit Tool setter Long parts ejector with guide tube 2-or 3-spindle front drilling unit Polygon machining unit Internal and external thread whirling unit Skewed cross drilling unit Backworking cross drilling and milling unit Dimensions Bar feeder: see manufacturer's specifications 8 . 000 rpm standard Max.000 rpm standard 20 mm (23 mm option) 2. chucking diameter Sub spindle drive power Sub spindle speed C axis sub spindle Tools for backworking Drilling tools (4-station tool holder) Independent backworking unit (drive standard) Speed Rapid feed Coolant tank capacity Dimensions (W x D x H) Weight 4 tools (Ø 22 mm holder) 4 tools (ER16) 8.000 rpm standard 2 tools Ø 22 mm 100 mm 2 tools Ø 22 mm 100 mm 4 tools (Ø 22 mm holder) 5 tools ER16 (or 3 ER16 tools + 2 ER20 tools) 8.7 kW 10.S P E C I F I C AT I O N S Technical data Main spindle Max.000 rpm 6 tools ( 12 mm) 6 tools ( 12 mm) SR-20J 20 mm (23 mm option) 3.2 kW 8.2 kW 8.000 rpm 4 tools (Ø 22 mm holder) 5 tools ER16 (or 3 ER16 tools + 2 ER20 tools) 8.000 rpm all axes 35 m/min 170 litres 2200 x 1200 x 1700 mm 2200 kg 4 tools (Ø 22 mm holder) 4 tools (ER16) 8. machining diameter Main spindle drive power Main spindle speed C axis main spindle Tool post Turning tools Drilling tools (4-station tool holder) Cross-machining tools Speed Tools for the front drilling unit Number of tools Sleeve holder Max. drilling depth Sub spindle Max.000 rpm all axes 35 m/min 170 litres 2200 x 1200 x 1700 mm 2200 kg 20 mm (23 mm option) 2. headstock stroke (standard) 205 mm 9 .000 rpm standard SR-20JN 20 mm (23 mm option) 55 mm 3.7 kW 10. E C O LO GY Environmental protection S TA Low power consumption Save money and help to protect the environment M R ICR ONIC S EC OLOGY Noise protection Noise level reduced to below 75 dB Noise pollution reduced in the whole plant Meeting the RoHS standard (Restriction of Hazardous Substances) Avoidance of hazardous substances 10 . g. As a customer. 11 . Chip conveyor The machine can be equipped with a chip conveyor or a chip flushing system. e. The software interface is integrated into the standard version of the machine. Further products are available. internal thread whirling. The training is exclusively for your personnel and is tailored to the parts you produce.S E R V I C E A N D PA R T N E R S Training Star Micronics GmbH offers special training sessions for operators. Bar feeder All commonly available bar feeders (FMB/IEMCA/LNS) can be adapted to work with the machine. We recommend the use of oil as this is easier on the machine. external thread whirling units. Peripherals High pressure units from 50 to 300 bar can also be retrofitted. etc. Retrofitting is available. you can decide whether the training takes place in your company or at Star Micronics GmbH. Coolants The machine can be run with oil or with water-based emulsion. ch Star Micronics GB Limited Chapel Street.de STAR Micronics AB Skrittvägen 3 567 92 Vaggeryd Sweden Tel. 2643 .starmicronics.02/09 .se Star Micronics AG Lauetstrasse 3 8112 Otelfingen Switzerland Tel.starmicronics.stargb.starmicronics. Technical specifications are subject to change.se www.net No liability is accepted for any printing errors in this brochure. +41 (0) 43 41160-60 Fax +41 (0) 43 41160-66 [email protected] Micronics GmbH Untere Reute 44 75305 Neuenbuerg Germany Tel.de www. +44 (0) 1332 864-455 Fax +44 (0) 1332 864-005 [email protected] www.net www. +46 (0) 393 614 110 Fax +46 (0) 393 125 61 info@starmicronics. GB-Melbourne Derbyshire DE73 8JF United Kingdom Tel. +49 (0) 7082 7920-0 Fax +49 (0) 7082 7920-20 info@starmicronics. CNC SWISS TYPE AUTOMATIC LATHE CNC AUTOMATIC LATHE FOR SHORT TURNING .