What to Look for When Buying a Used Star Micronics
Star Swiss-type lathes are built for high-precision, high-volume small-part production with sliding-head construction, guide bushings, and Star's signature slant-type dovetail slide guideway. Well-maintained Star machines run reliably for decades in medical, aerospace, and electronics production. Swiss-type lathes have unique inspection points compared to conventional CNC lathes. Here is what to check.
Inspect the guide bushing and headstock. The guide bushing is the most critical wear item on any used Swiss-type lathe and the single most common reason a used Star is not holding tolerance. Verify guide bushing type (stationary or revolving), inspect for wear, and budget for replacement as part of any used purchase. Test sliding headstock motion for smooth, repeatable travel across the full stroke. Check the collet condition and clamping pressure.
Verify the main spindle, sub-spindle, and live tooling. Test main spindle runout and listen for bearing noise across the full RPM range (Star machines typically run 8,000 to 10,000 RPM). On "J" suffix models with a sub-spindle, test the parts transfer cycle, sub-spindle concentricity, and front-to-back machining handoff. On live-tooling configurations, verify each driven tool position for smooth, powerful rotation and indexing accuracy.
Check the tool post, axes, and bar feeder integration. Star's slant-type tool post is the defining mechanical feature. Inspect the gang tool slide and tool plate for wear or damage, and verify each tool position. Run X, Y (if equipped), and Z axes through full travel. Check any 4-spindle attachment for back-working tools. Verify bar feeder integration (LNS, Iemca, FMB, or similar) including the bar advance, alignment with the main spindle, and any synchronization with the lathe controller.
Identify the Fanuc control series and any aftermarket features. Star machines almost universally ship with Fanuc CNC controls including 18i-TB, 31i-A, 32i-B, 0i-TF, and 0i-TD. Confirm the control series, software version, and parameter backups. Check installed options including high-pressure coolant, mist collector, chip conveyor, parts catcher, and any high-frequency tooling (HFT) capability.
Star Micronics Machine Series
SR Series (Star's Bestseller)
The SR Series is Star's most widely traded sliding head Swiss platform on the used market. The SR-20J handles 20 mm bar stock, the SR-32J (the global bestseller) handles 32 mm, and the SR-38 and 10-axis B-axis SR-38B handle up to 38 mm diameter for larger Swiss parts. The newer SR-32JII features a modular design with higher rigidity, faster rapid feed, and a power-driven sub-spindle tool.
SB Series (Compact & Entry-Level)
The SB Series (SB-12R, SB-16R, SB-16E, SB-16III, SB-20R Type G, SB-20RII) is Star's entry-level Swiss platform for fine-precision work under 20 mm diameter. The SB-20R Type G is the current production workhorse with 7-axis operation, 10,000 RPM, 3.7 kW power, and Fanuc 0i-TF control. The original SB-16 launched in 2003 and has been Star's best-selling series in Asian markets.
SV Series (Multi-Axis)
The SV Series (SV-20R, SV-32, SV-32JII, SV-38R) is Star's multi-axis Swiss platform with multi-series control for high productivity. SV machines are designed for complex parts requiring extensive simultaneous operations.
ST, SW, SP & SL Series
The ST Series (ST-20, ST-32J, ST-38) covers production Swiss turning across the 20 to 38 mm range. The newer SW Series (SW-20) and SP Series (SP-23, SP-32) add modern enhancements and broader application range. The small-diameter SL Series targets very small-diameter Swiss work.
SK Series Fixed-Head & ECAS Specialty
The SK Series is Star's twin-turret fixed-head lathe (up to 51 mm capacity), a departure from sliding-head Swiss work into fixed-headstock turning. The ECAS Series machines are Star specialty platforms for specific high-volume production applications.
How to Sell Your Used Star Micronics
Star Swiss lathes hold strong resale value thanks to demand from medical, aerospace, and electronics shops, the global Star service network, and Star's reputation for accuracy and longevity. SR-20J, SR-32J, SB-20R Type G, and SV-32 machines are all in particularly steady demand on the used market.
Resell CNC buys used Star Micronics machines, every model and every generation, nationwide.
- Contact us at (844) 478-8181 or sales@resellcnc.com.
- Free appraisal within 24 hours, no obligation.
- Accept the offer and we handle rigging, transport, and logistics.
Frequently Asked Questions About Used Star Micronics Machines
Is Star Micronics the same as Star CNC?
They are part of the same company. Star Micronics Co., Ltd. is the Japanese parent based in Shizuoka. Star CNC Machine Tool Corp. is the US subsidiary based in Roslyn Heights, New York and serves North American customers. Both names refer to the same machine tool line.
Are used Star Micronics lathes reliable?
Yes. Star has built Swiss-type lathes since the 1950s and the brand is widely respected in medical, aerospace, and electronics precision production. Many original Star Swiss machines from the 1990s and 2000s remain in active daily production today when properly maintained with current guide bushings and collets.
What CNC control does Star Micronics use?
Fanuc. Across the SR, SB, SV, SW, SP, ST, SL, SK, and ECAS lineups, Star Micronics Swiss-type lathes ship with Fanuc CNC controls including the 18i-TB, 31i-A, 32i-B, 0i-TF, and 0i-TD series.
What does the "J" suffix mean on Star models?
The "J" suffix denotes a sub-spindle (back spindle) for simultaneous front and back machining of a part in one setup. The "J" models (SR-20J, SR-32J, ST-32J, SR-32JII) deliver dramatically reduced cycle times on parts requiring work on both ends.
What should I inspect on a used Star Swiss lathe?
Guide bushing wear (most common tolerance issue), main and sub-spindle runout, collet condition, slide and tool post condition, axis motion through full travel, live-tool function, Fanuc control series and software, and bar feeder alignment and synchronization.
Does Resell CNC offer financing on used Star machines?
Yes. Resell CNC offers flexible financing options to help your shop acquire the equipment it needs. Contact us at (844) 478-8181 to discuss terms.
How do I sell my used Star Micronics?
Contact Resell CNC at (844) 478-8181 or sales@resellcnc.com. We buy every Star model: SR, SB, SV, SW, SP, ST, SL, SK, ECAS, and legacy SA, KNC, and RNC machines. Free appraisal within 24 hours.