Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, supplies driven tool holders and static tooling for the Nakamura-Tome NTY3-250 on the open machine-side BMT and VDI (DIN 69880) standards. The turret interface for this model is confirmed per machine configuration by Mongtec engineering at RFQ, and every driven unit ships with an individual inspection report.
| Machine brand | Nakamura-Tome |
|---|---|
| Model | NTY3-250 |
| Turret interface | BMT45 (Nakamura 60×50 mm) — listed for this model in Mongtec TOOL HOLDER SELECTION GUIDE Ver 2026.08; confirmed against the actual turret drawing at quotation |
| Driven tool line 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 (0° axial driven line) |
| Quality assurance | Each driven unit ships with an individual inspection report |
Nakamura-Tome turret rule: the BMT44, BMT55 and BMT65 turrets on Nakamura machines are Nakamura-specific designs — standard catalogue BMT holders do not fit them. Mongtec supplies holders to the Nakamura interface and supplies them regularly. Where a Nakamura machine carries a VDI40 turret, standard VDI40 applies.
TOOL HOLDER SELECTION GUIDE Ver 2026.08 (PDF, 2.6 MB)
Models listed in this catalogue section: BOLT HOLE PATTERN - 60 × 50 mm / WT150, 250 / WT150II, 250II / WTW150 / WTS150 / SUPER NTM3 / / SUPER NTJ / SUPER NTJX / SC150, 200, 250 / NTY3 250 / / TW10M, MY, MM, MMY, MMYY / / TW20M, MY, MM, MMY, MMYY (16 ST) / / WY250 / AS200 (15, 24 ST)
| Article no. | Tool clamping |
|---|---|
| M98584 | 20 |
| M38185 | 25 |
| M90385 | 20 |
| M28584 | 25 |
| M59784 | 20 |
| M68584 | Ø25 |
| M38584 | Ø32 |
| M21385 | Ø40 |
| M77185 | Ø40 |
| M80485 | Ø40 |
| M31385 | SH32 |
| M2417 | ER25 1-16 |
| M3417 | ER25 1-16 |
Article numbers with a specification page on this site: M0407, M2007, M3307, M6007, M7001, M7014, M8007, M8307, M9407
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.
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See all Nakamura-Tome models →
Mongtec supplies BMT and VDI (DIN 69880) driven tool holders and static tooling compatible with the Nakamura-Tome turret platform. Interface: BMT45 (Nakamura 60×50 mm). The exact configuration is confirmed by Mongtec engineering at RFQ.
Yes. BMT and VDI are open machine-side standards, so switching supplier does not require any turret modification. Mongtec also publishes cross-reference pages for WTO, Heimatec, EWS, Eppinger, BIG and other brands.
Lead time is quoted per order and ships from Taichung, Taiwan. Every Mongtec driven tool holder is inspected before shipment (runout, torque, balancing) and ships with an individual inspection report.
Yes — Mongtec supplies driven and static tool holders for this turret. This Nakamura turret uses a 60 × 50 mm BMT bolt pattern. It is a different design from the generic BMT45 published as article numbers on this site, so those catalogue article numbers do not apply here and should not be ordered against this machine. Mongtec supplies to the Nakamura pattern regularly.
Turret coverage: Nakamura-Tome WT150, WT250 · WT150II, WT250II · WTW150 · WTS150 · SUPER NTM3 · SUPER NTJ · SUPER NTJX · SC150, SC200, SC250 · NTY3 250 · TW10M / MY / MM / MMY / MMYY · TW20M… (16 ST) · WY250 · AS200 (15, 24 ST).
Mongtec driven and static tool holders are exported worldwide across five continents, and are supplied to machine tool manufacturers as well as to end users. Lead time is confirmed against the items and quantity you need.
To quote we need: the machine model and turret designation, the station count, a turret interface drawing or a clear photo of the turret face, the holder orientation (axial or radial) and the clamping or collet size you need, and the quantity. A drawing of the holder you are replacing works just as well.
Email info@mongtec.com to discuss your application and request drawings, or send an enquiry here. Mongtec engineering confirms the fit against your turret before quoting.
All 228 article numbers with full specification · How to choose a driven tool holder · PSC / ISO 26623 tooling
We have not published an interface for this model because the public machine specifications do not state it consistently, and a guessed figure is worse than a blank field. Three steps settle it:
BMT is not published by ISO or DIN, so even the marking in step 2 is a starting point, not proof. The drawing decides.
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 |
| DMG MORI NZX 2500 | turret build | BMT40 or BMT60 |
| Takisawa TS-3000 / 4000 | key count | 2-key and 3-key turrets are not interchangeable |
This is why a published spec sheet cannot answer the question for every machine, and why Mongtec verifies the turret drawing before quoting rather than selling against a nominal size. It is also the most common reason a driven tool holder arrives and will not bolt on.
Reference table: 38 BMT turret bolt patterns by machine builder →
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