Citizen Cincom B16E-V

The Citizen Cincom B16E-V is a 16 mm sliding-headstock lathe with a back spindle but no gang rotary tools. Its main spindle runs to 10,000 rpm, its back spindle chuck matches the 16 mm bar capacity, and 13 tool positions are available. Think of it as a two-ended turning machine: it turns, drills and taps on the axis at both ends, but the table gives it no driven tools for side features.

The back spindle is the defining feature. It takes 16 mm work, so the full bar diameter can be transferred, runs to 6,000 rpm on a 1.0 kW motor and allows 30 mm of the part to protrude for back machining. Back drilling is listed to 5 mm and back tapping to M3. On the front, drilling goes to 6 mm and tapping to M6.

Length per chucking is 135 mm with the guide bush. With the R.G.B. in use it is 60 mm, and the main spindle runs to a lower limit that Citizen gives in brackets. A 20 mm through-hole in the main spindle leaves room for the 16 mm bar.

Against the 12 mm Cincom B12E-V, which has the same layout and tool count, the B16E-V trades main spindle speed, 10,000 rpm against 12,000 rpm, for the larger bar and back chuck. If parts need cross holes or flats, the Cincom B16E-VI adds gang rotary tools at 4,500 rpm and takes 16 tools. Services are 5.2 kVA rated and 4 kVA average, with a machine weight of 1,150 kg and rapids of 21 m/min on X and Y.