Citizen Cincom R04

A new Citizen Cincom R04 typically runs $80,000-$150,000 depending on options and configuration. The R04 and R01 share the same platform and price range, with the primary difference being the bar capacity. The R04 is the more commonly specified of the two R-series machines due to its broader 4mm capacity. Used R04 machines are rare on the secondary market.

Choose the R04 unless your parts are exclusively under 1mm diameter. The R04's 4mm capacity covers virtually all micro-precision components while maintaining the same 20,000 RPM spindles, 17 tools, and micro-optimized platform. The R01's 1mm limit makes it a specialist machine for sub-millimeter watch and micro-electronics components only. Most shops entering micro Swiss production should start with the R04.

The R04 and B12 serve different scale ranges. The R04 handles 1-4mm parts at 20,000 RPM with micro-optimized dynamics, while the B12 handles 1-12mm parts at 12,000 RPM with standard Swiss-scale tooling. For parts under 4mm, the R04 provides better performance due to its higher spindle speeds and micro-scale design. For parts between 4-12mm, the B12 is the necessary step up. There is minimal overlap in their practical application ranges.

The R04 is capable of holding single-digit micron tolerances on diameter and length dimensions when properly set up with quality tooling and stable environmental conditions. At micro diameters, thermal stability, vibration isolation, and tooling quality become the primary factors determining achievable tolerances. Many micro Swiss operations maintain temperature-controlled environments for consistent sub-5-micron accuracy.

The R04 requires a micro-format bar feeder designed for small-diameter stock up to 4mm. Standard Swiss bar feeders cannot handle material this small reliably. Specialized micro bar feeders from LNS, IEMCA, and other manufacturers offer models designed for ultra-small diameters. The 9mm spindle bore accepts the micro bar feeder interface required for reliable material feeding.

Yes. The R04 is widely used in the watch and clock industry for producing stems, pivots, pinions, crown tubes, and other precision movement components. The 20,000 RPM spindle speeds deliver the surface finishes required for watch-grade parts, and the 17 tool positions handle the complex features found in modern watch movement components. The 4mm bar capacity covers the majority of watch component diameters.