Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, supplies BMT and VDI (DIN 69880) driven and static tool holders. Citizen Machinery builds two families: Miyano fixed-headstock turret turning centers (BNA, BNE, BNJ) that use BMT turrets, and Cincom Swiss-type sliding-head lathes (L, M, D, R series) that use a gang / Swiss interface. Pick your machine below, or contact engineering — the exact interface for a given model is confirmed at RFQ.
| Series | Type | Mongtec supply |
|---|---|---|
| Miyano BNA / BNE / BNJ | Turret turning center | BMT holders — size at RFQ |
| Cincom L / M / D / R | Swiss-type sliding-head | Gang / Swiss interface — confirmed at RFQ |
Interface data is drawn from publicly available Citizen / Miyano machine specifications and tooling application listings. Mongtec's BMT and VDI holders apply to the Miyano turret turning centers; the Cincom Swiss-type machines use a machine-specific gang interface confirmed at RFQ. Mongtec supplies open-standard BMT and VDI interfaces; it does not supply or claim compatibility with proprietary quick-change systems such as WTO QuickFlex®.
For Citizen Miyano turret turning centers, see the dedicated Miyano compatibility page. Cincom Swiss machines: send the model for RFQ.
Mongtec supplies driven and static tooling for Citizen Cincom sliding-headstock (Swiss-type) turning centers. Swiss tooling is gang/sliding-head and machine-specific; the exact tool-station interface is confirmed at RFQ.
Cincom: A20 / A32; D25; L16 / L20 / L25 / L32; M32 / M532.
Holders published in the Mongtec Swiss Type Toolholders, Ver 2026.07 catalogue for Citizen sliding-headstock (Swiss-type) lathes. Mongtec lists these against the Citizen machine-builder reference code, because a Swiss-type holder position is machine-specific and has no BMT or VDI size to quote. Click a model for full specification and to send it to engineering.
| Mongtec model | Citizen code | Type | Max tool shank | Shank dia. | Collet | Drive |
|---|---|---|---|---|---|---|
| SAU825 | SAU825 | Sleeves | 25.4 mm | 31 mm | — | Static |
| GDE1025 / GDE10254 | — | Static drilling toolholders (internal coolant) | 19.05 mm | 25 / 25.4 mm | — | Static |
| MSC507 | MSC507 | Axial toolholders | 7.0 mm | 25 mm | ER11 | 1:1 · 10,000 rpm |
| GDF1801 | GDF1801 | Static 4 holes drilling toolholders | 25.4 mm | — | — | Static |
| GDF1207 | GDF1207 | Static 3 holes drilling toolholders | 19.05 mm | 31 mm | — | Static |
Citizen is a trademark of its respective owner. Mongtec Precision Inc. is an independent tooling brand and is not affiliated with, endorsed by, or a licensee of Citizen. The Citizen reference code is quoted only to identify which holder position and machine each Mongtec part is built for; fit is confirmed by Mongtec engineering at RFQ. All Mongtec Swiss-type toolholders →
For Citizen Miyano turret turning centers (BNA, BNE, BNJ), yes — Mongtec supplies BMT holders. For Cincom Swiss-type sliding-head lathes, driven tools use a gang / Swiss interface confirmed per machine at RFQ.
Miyano is Citizen Machinery's fixed-headstock turret turning-center brand. Mongtec has a dedicated Miyano page covering the BNA, BNE and BNJ BMT-turret machines.
Miyano BNA and BNE turret turning centers use BMT-pattern disc turrets; the exact size is confirmed per machine at RFQ. See the Miyano page for details.
Cincom L, M, D and R machines are Swiss-type with gang tooling; that interface is machine-specific. Send the model via the contact page and engineering will confirm what can be supplied at RFQ.
Driven holders are built to 0.003 mm runout or better and ship with an individual inspection report.