Citizen Cincom D25

The Citizen Cincom D25 is a large-diameter sliding headstock CNC automatic lathe designed to bridge the gap between Citizen's standard 20mm L-series and the 32mm M32 platform. With a 25mm standard bar capacity expandable to 32mm, the D25 occupies a strategic sweet spot for shops producing parts that exceed the L20's 20mm limit but don't require the M32's full 32mm capability and associated cost. Available in two configurations—the D25-VII and the D25-VIII with programmable B-axis for 5-axis simultaneous control—the D25 delivers serious production capability for medium-diameter precision components.

The D25's dual gang tool post design is a standout feature. Two independent gang tool posts enable simultaneous front machining on both posts, dramatically reducing cycle times on parts with multiple turning diameters, grooves, and features. The machine accommodates 35 to 59 tools depending on configuration, with the D25-VII offering the maximum tool count for parts requiring extensive tooling variety. Main spindle speed reaches 10,000 RPM with 3.7/5.5 kW of power, while the back spindle matches at 10,000 RPM with 2.2/3.7 kW. Both spindles use TF30 chucks for secure workholding.

Citizen's LFV (Low Frequency Vibration) chip-breaking technology is available on the D25, providing the controlled chip breaking that is essential when machining stainless steel, titanium, and engineering plastics at 25mm diameter where chip management becomes increasingly challenging. The machine supports both guide bushing operation with a 250mm fixed guide bushing and guide-bushless mode for shorter parts. Gang rotary tools operate at 9,000 RPM and back tool post rotary tools at their rated speeds, providing solid milling and drilling capability.

The D25-VIII variant adds a programmable B-axis for 5-axis simultaneous control, enabling compound-angle drilling and angular milling that the D25-VII cannot perform. At 2,440 x 1,380 mm floor space, 1,795 mm height, and 3,450 kg, the D25 is a mid-size Swiss machine with power consumption rated at 13 kVA. For shops producing medical, automotive, and hydraulic components in the 20-32mm diameter range, the D25 provides a purpose-built solution that avoids both the bar capacity limitations of the L20 and the higher cost of the M32.