Star NEW SP-20

The Star NEW SP-20 is a high-production Swiss-type CNC automatic lathe designed for maximum throughput on 20mm bar diameter components. The SP (Standard Production) designation reflects the machine's optimization for cycle time reduction and production efficiency above all else. Where the SR-20J prioritizes versatility and the SV-20 prioritizes maximum performance, the SP-20 is singularly focused on producing the most parts per hour in the 20mm Swiss class.

The NEW SP-20 features a main spindle reaching 12,000 RPM and a back spindle at 10,000 RPM, with high acceleration rates that minimize the time spent ramping to cutting speed. The machine's production-optimized architecture includes rapid traverse rates of 36 m/min, fast turret indexing, and Star's Motion Control System tuned specifically for minimum cycle time. With up to 8 axes and up to 26 tool positions, the SP-20 provides enough capability for moderately complex parts while keeping the machine focused on speed.

The SP-20's production orientation extends beyond raw speed to include features that maximize uptime and minimize non-productive time. The tool layout is designed for quick changeovers, the chip management system handles high-volume swarf effectively, and the machine-to-bar-feeder integration is optimized for minimum bar change time. Star's hydraulic-free design reduces maintenance-related downtime, and the robust construction maintains precision under the demanding duty cycles of high-volume production.

For shops running production volumes of tens of thousands or hundreds of thousands of Swiss-type parts per month, the SP-20's cycle time advantage over general-purpose Swiss lathes compounds into significant productivity and cost-per-part advantages. The machine is particularly popular in automotive and electronics manufacturing where volume requirements are high and per-piece cost is the critical competitive factor.