Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, supplies driven tool holders and static tooling for the ROMI GL 300 Y/S 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.
| Machine brand | ROMI |
|---|---|
| Model | GL 300 Y/S |
| Turret interface | BMT55 — 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) |
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)
Models listed in this catalogue section: GL300Y/S
| Article no. | Tool clamping | What it does on the machine |
|---|---|---|
| M74384 | 25 | 180° reversible — Facing & face grooving |
| M19684 | Ø40 | 180° reversible — Boring, U-drilling & ID grooving |
| M02084 | Ø40 | 180° reversible — Boring, U-drilling & ID grooving |
| M39484 | Ø20 | 180° reversible — Boring, U-drilling & ID grooving |
| M55085 | 20 | 180° reversible — OD turning, threading, parting & grooving |
| M81484 | 25 | 180° reversible — OD turning, threading, parting & grooving |
| M03084 | 25 | 180° reversible — OD turning, threading, parting & grooving |
| M22084 | 25 | OD turning, threading, parting & grooving |
| M13084 | 25 | OD turning, threading, parting & grooving |
| M68185 | SH32 WIDTH 32 | OD turning, threading, parting & grooving |
| M6317 | ER25 1-16 | Axial (0°) drilling & milling |
| M6117 | ER25 1-16 | Axial (0°) drilling & milling |
| M4117 | ER32 2-20 | Axial (0°) drilling & milling |
| M4317 | ER25 1-16 | 180° reversible — Radial (90°) face drilling & milling |
| M5317 | ER32 2-20 | 180° reversible — Radial (90°) face drilling & milling |
| M0317 | ER25 1-16 | 180° reversible — Radial (90°) face drilling & milling |
| M1317 | ER32 2-20 | 180° reversible — Radial (90°) face drilling & milling |
Article numbers shown as links have a specification page with the catalogue drawing. The rest are published in the Mongtec selection guide; Mongtec confirms the final article number against your turret drawing at RFQ.
Article numbers with a specification page on this site: M0317, M0717, M0817, M1117, M1317, M1817, M2317, M3317, M3417, M4117, M5317, M6117, M6317, M6617, M7317, M7517
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.
Request a quote for this machine
Mongtec supplies BMT and VDI (DIN 69880) driven tool holders and static tooling compatible with the ROMI turret platform. Interface: BMT55. 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.
A selection of Mongtec BMT55 driven tool holder article numbers. This is a starting point, not a confirmed fit — the exact turret drawing is verified at RFQ. See all 19 BMT55 article numbers →
| Article no. | Orientation | Collet | Max speed | Torque |
|---|---|---|---|---|
| M4117 | Axial | ER32 | 6,000 rpm | 70 Nm |
| M6117 | Axial | ER25 | 6,000 rpm | 40 Nm |
| M6317 | Axial | ER25 | 8,000 rpm | 40 Nm |
| M0317 | Radial | ER25 | 6,000 rpm | 40 Nm |
| M1317 | Radial | ER32 | 6,000 rpm | 70 Nm |
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