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.
Citizen tooling interfaces
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®.
Supported Citizen models
Miyano BNA-42 / BNE-51 / BNJ-51 — BMT — see Miyano page
For Citizen Miyano turret turning centers, see the dedicated Miyano compatibility page. Cincom Swiss machines: send the model for RFQ.
Additional Citizen (Cincom) models covered
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.
Mongtec Swiss-type toolholders for Citizen sliding-headstock lathes
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.
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 →
Frequently asked questions
Does Mongtec make tooling for Citizen machines?
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.
Is Miyano the same as Citizen?
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.
What BMT size does a Miyano BNA / BNE use?
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.
Can Mongtec supply driven tools for Cincom Swiss machines?
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.
What precision and documentation do the holders ship with?
Driven holders are built to 0.003 mm runout or better.
Figures below are Mongtec's own published line specifications (mongtec-tools.com, accessed 2026-07-20). They describe the capability range of the product line; the rating of a specific unit for a specific machine is confirmed by Mongtec engineering at RFQ.
Turret interfaces supplied
BMT (face-and-taper), VDI polygonal shank to DIN 69880, and PSC polygon shank coupling to ISO 26623
Driven tool speed
6,000–12,000 rpm standard; up to 32,000 rpm with speed increaser
Max torque
Up to 160 Nm (line capability; unit rating confirmed at RFQ)
Coolant
Internal / external, up to 100 bar
Runout
≤0.003 mm published for the Mazak-compatible 0° driven tool line; other families confirmed at RFQ
No blanket published figure — quoted per order after interface, quantity and customisation are reviewed
On turret standards: VDI is codified in DIN 69880 and the PSC polygon shank coupling in ISO 26623. BMT (Base Mounted Turret) is a widely adopted de facto industry interface but is not published by ISO or DIN — two turrets both labelled “BMT65” can differ in detail between machine builders. Mongtec therefore verifies the actual turret dimensions of the stated machine before confirming fitment.
What to send for a quote
Mongtec confirms fit and quotes from four details. Email them to info@mongtec.com or use the quote form — we reply within one working day.
Machine make and full model, as shown on the machine nameplate.
Turret interface (for example BMT65 or VDI40) — if unsure, a photo of the turret face is enough.
The part number you use now, or a photo of the nameplate on the holder you are replacing.
Dimensions, speeds, collets and compatible machine series for every Mongtec holder built for Citizen Cincom sliding-headstock lathes. Free download, no registration.
34 models for Citizen Cincom A20, A32, L12, L16, L20, L32, M32: live and backworking holders, with Citizen reference part numbers.
Citizen, Hanwha, Star and Tsugami are trademarks of their respective owners; the names only identify machine compatibility. All Mongtec catalogues →
