Citizen Cincom B20
This model was not found in Citizen's current lineup when we checked on 2026-10-02 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.
Key Specifications
max bar diameter
main spindle speed
sub spindle speed
number of axes
tool stations
driven tool speed
How much does the Citizen Cincom B20 cost?
Estimated price range
Our best estimate for a swiss-type lathe in this class — not a quote from Citizen. Configuration moves it a long way.
Overview
The Citizen Cincom B20 is a 20 mm sliding-headstock automatic lathe that does not appear in Citizen's current lineup, so anyone looking at one today is most likely buying a used machine. Its table has not been checked against a Citizen source, and the figures below are the listed ones; confirm them against the machine's own documentation.
The listed figures describe a well-tooled 20 mm machine: 7 axes, 38 tool stations and a maximum part length of 200 mm. Main and sub spindles are both listed at 10,000 rpm, and driven tools at 6,000 rpm. Matching spindle speeds mean back-end turning and drilling on small diameters do not have to run slower than the front, which helps on parts where the cut-off end carries real features.
The tool count is the figure that stands out. With 38 stations a machine can keep several jobs' tooling loaded, or carry dedicated tools for roughing and finishing on the same part. Against the Cincom F20, listed with 34 stations, 6 axes and an 8,000 rpm sub spindle, the B20 has more of each.
For installation, the listed weight is approximately 1,800 kg and the footprint 1,350 x 1,450 mm, before the bar feeder. On a used machine, check the axis count, spindle speeds and tooling against the listed figures before agreeing a deal, since none of them has been verified.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Diameter | 20 mm |
| Main Spindle Speed | 10,000 RPM |
| Sub Spindle Speed | 10,000 RPM |
| Number of Axes | 7 |
| Tool Stations | 38 |
| Driven Tool Speed | 6,000 RPM |
| Max Part Length | 200 mm |
| Collet Chuck Type | 5C equivalent |
| CNC Control | Citizen OSP-P300S |
| Machine Weight | Approx. 1,800 kg |
| Footprint W X D | 1,350 x 1,450 mm |
Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.
Strengths & Limitations
Strengths
- 38 tool stations listed, enough to keep tooling for several jobs loaded
- Main and sub spindles both listed at 10,000 rpm
- 7 axes listed, one more than the Cincom F20
- Driven tools listed at 6,000 rpm for cross work on 20 mm parts
Limitations
- Not in Citizen's current lineup, so parts and support need checking before purchase
- The listed figures have not been verified against a Citizen source
- Bar capacity ends at 20 mm and part length at 200 mm
- The table gives no motor ratings, so cutting power cannot be judged from it
Best For
Frequently Asked Questions
01
It does not appear in Citizen's current lineup, so a B20 on the market today is a used machine. The figures on this page are the listed ones and have not been checked against a Citizen source, so confirm the bar capacity, axis count and tooling against the machine itself.
02
On the listed figures, the B20 has 7 axes and 38 tool stations with a 10,000 rpm sub spindle. The Cincom F20 is listed with 6 axes, 34 tool stations and an 8,000 rpm sub spindle, plus a front-post Y axis of ±12 mm. Both are listed at 20 mm bar and 200 mm part length.
03
The listed maximum bar diameter is 20 mm and the listed maximum part length is 200 mm. Parts close to either limit should be trialled before committing, since the figures have not been checked against a Citizen source.
04
The listed machine weight is approximately 1,800 kg and the listed footprint 1,350 x 1,450 mm. Add room for the bar feeder behind the headstock and for chip and coolant access before planning the floor.
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