Citizen Cincom L20

A new Citizen Cincom L20 typically runs $150,000-$280,000 depending on configuration and options. Base 5-axis models start around $150,000-$180,000, while advanced configurations with LFV and ATC can reach $250,000-$280,000. Used L20 machines are widely available; models from 2010-2020 typically sell for $40,000-$120,000 depending on age, condition, and configuration.

LFV (Low Frequency Vibration) is Citizen's proprietary chip-breaking technology that oscillates the cutting tool in controlled patterns synchronized with spindle rotation. This breaks chips into short segments regardless of material or cutting conditions. It's a significant advantage when machining gummy materials like 316 stainless steel, titanium, and medical-grade plastics that normally produce long, stringy chips. LFV reduces machine stoppages, extends tool life, and enables more reliable unattended production.

Both are top-tier 20mm Swiss lathes. The Citizen L20's key advantage is LFV chip-breaking technology for gummy materials. The Star SR-20J counters with a hydraulic-free design that reduces maintenance and power consumption. Both offer similar bar capacity and spindle speeds. The choice often comes down to which technology matters more for your part mix—LFV for difficult chip-breaking situations or hydraulic-free operation for lower maintenance costs—and which dealer provides better support in your area.

Yes. Select L20 configurations support non-guide bushing operation, which is beneficial for shorter parts where the guide bushing would create excessive bar remnant waste. Running without the guide bushing reduces material costs and is preferred for parts with low length-to-diameter ratios. The tradeoff is reduced support for long, slender parts where the guide bushing provides critical rigidity.

The L20 uses a Mitsubishi Meldas 70LPC control with software developed by Citizen. This means you get Mitsubishi's reliable hardware and processing speed combined with Citizen's application-specific software for Swiss-type machining. The control supports multi-line, multi-axis programming with superimposed and synchronized control, making it straightforward to program simultaneous front and back operations.

Yes, and this is where the L20 especially excels when equipped with LFV. The combination of controlled chip breaking, reliable bar feeding (typically through LNS, IEMCA, or FMB feeders), parts catching, and Citizen's proven machine reliability makes the L20 one of the most capable Swiss lathes for extended unattended operation. Many production shops run L20 machines across three shifts with minimal operator intervention.