Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, designs and engineers driven tool holders and static tooling for the Citizen Cincom A20 on the open machine-side BMT and VDI (DIN 69880) standards. The turret interface for this model is confirmed by Mongtec engineering against the actual turret drawing at RFQ, and every driven unit ships with an individual inspection report.
| Machine brand | Citizen |
|---|---|
| Model | Cincom A20 |
| Turret interface | Not published for this model yet. Same model, different turret: station count, model suffix and build year change the turret interface. Mongtec confirms the interface from the machine model and a turret photo before quoting. Send the machine model, station count and a turret photo — Mongtec confirms the interface free of charge. |
| Driven tool holders | Axial, radial, adjustable-angle, twin-output, high-speed and geared-down units |
| Static tooling | Turning, boring bar, facing, cut-off and blank holders |
| Inspection | Individual inspection report with every driven unit |
| Origin | Taiwanese brand headquartered in Taichung, Taiwan |
Same model, different turret: station count, model suffix and build year change the turret interface. Mongtec confirms the interface from the machine model and a turret photo before quoting.
TOOL HOLDER SELECTION GUIDE Ver 2026.08 (PDF, 2.6 MB)
Mongtec also supplies BMT40, BMT60, BMT68 and BMT80 holders and builder-specific interfaces (Mazak, Nakamura-Tome, Haas BOT, Okuma BOT, Muratec BOT) — the 228 article numbers published here are a subset of the range. Mongtec tooling is exported to five continents and supplied to machine-tool builders. Lead time is confirmed per item and quantity at quotation.
Machine builders routinely ship the same model with more than one turret. These are all published, verified examples:
| Machine | What changes | Turret mounting |
|---|---|---|
| Hardinge Conquest H51 | station count | 12-station = BMT55 · 16-station = BMT45 |
| Okuma GENOS L300 | model suffix | L300 M = VDI40 · L300 MW/MYW = 65×73 bolt pattern |
| DMG MORI ALC / ALX 1500–2500 | turret build | BMT40 or BMT42/64 |
| Takisawa TS-3000 / 4000 | key count | 2-key and 3-key turrets are not interchangeable |
It is the most common reason a driven tool holder arrives and will not bolt on. Reference table: 38 BMT turret bolt patterns by machine builder →
Send the machine model and a photo of the turret face — we confirm the fit before quoting →
We have not published a figure for this model because the public machine specifications do not state it consistently, and a guessed figure is worse than a blank field. Send the machine model and a photograph of the turret face and Mongtec engineering confirms it against the actual turret drawing. That check is free and takes one email.
The catalogue dimensioned drawing is published on the page of each Mongtec article number. After your enquiry Mongtec confirms compatibility with your actual spindle, turret or pull stud and gives the final article number — that check is free.
Yes. Special angles, extended reach, high-pressure internal coolant and non-standard mountings are supplied to order. Describe the operation and the machine.
All Citizen models · Driven tool holder types and turret interfaces · Published article numbers · Static turret tooling
Machine builders regularly ship the same model with different turrets — station count, model suffix and the number of keys all change the mounting. The Hardinge Conquest H51 is BMT55 in the 12-station build and BMT45 in the 16-station build; the Okuma GENOS L300 M is VDI40, while the L300 MW/MYW uses a 65×73 mm bolt pattern. This is the single most common reason a driven tool holder arrives and will not bolt on. BMT bolt pattern reference — 38 patterns by machine builder →
Send your model and a photo of the turret face — we confirm the fit before quoting →
The turret interface for this machine is confirmed at RFQ, so no article number is published here. These are the driven tool types Mongtec publishes — which one fits is confirmed once the turret is identified.
BMT bolt pattern reference (38 patterns) · All driven tool types and turret interfaces