The DMG MORI CTX beta 4A uses a VDI40 Trifix turret interface. Mongtec Precision, a Taiwanese tooling brand headquartered in Taichung, Taiwan, supplies driven tool holders and static tooling on the open machine-side BMT and VDI (DIN 69880) standards used by this machine class. The exact Mongtec model for your machine configuration is confirmed by Mongtec engineering at RFQ, and every driven unit ships with an individual inspection report.
| Machine brand | DMG MORI |
|---|---|
| Model | CTX beta 4A |
| Turret interface | VDI40 Trifix |
| 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 |
DMG MORI turret rule: NL / NLX 1500–3000 use BMT60 on 12-station turrets and BMT40 on 20-station turrets; NLX 4000 and NT 4000–5400 use BMT60; Duraturn, NT/NTX 1000–3200, NRX 2000, NZ and NZX use BMT40. Trifix VDI turrets (VDI25/30/40 Trifix) accept standard VDI holders.
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.
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| Article no. | Type | Collet / coupling | Ratio | Max speed | Torque |
|---|---|---|---|---|---|
| M2826 | Axial Tool Head, Round, Ext Nut | ER32 | 1:1 | 5000 rpm | 70 Nm |
| M4526 | Axial Tool Head, Round, Int Nut | ER32 | 1:1 | 5000 rpm | 70 Nm |
| M2326 | Axial Tool Head, Round, Int Nut, Through Coolant | ER32 | 1:1 | 5000 rpm | 70 Nm |
| M4226 | Axial Tool Head, Round,Ext Nut | ER32 | 1:1 | 5000 rpm | 70 Nm |
| M8066 | Axial Tool Head, Round,Ext Nut | ER40 | 1:1 | 5000 rpm | 70 Nm |
| M5526 | Axial Tool Head, Round,Int Nut | ER32 | 1:1 | 5000 rpm | 40 Nm |
| M2426 | Axial Tool Head, Square | ER32 | 1:1 | 5000 rpm | 70 Nm |
| M0726 | Axial Tool Head, Square,Side Lock Adapter | — | 1:1 | 5000 rpm | 70 Nm |
| M6626 | Axial Tool Head,Offset,Left Version | ER32 | 2:1 | 6000 rpm | 40 Nm |
| M4366 | Axial Tool Head,Offset,Right Version | ER32 | 1:1 | 6000 rpm | 63 Nm |
Listed from the Mongtec Tool Holders — VDI & BMT, Ver 2026.3 catalogue for the VDI40 turret interface. This is the published range for that interface size, not a confirmed fit for this specific machine configuration — Mongtec engineering verifies interface dimensions, clearance and drive coupling per machine at RFQ. Ask engineering to confirm →
Mongtec publishes 75 VDI40 driven (live) tool holder article numbers, each with collet, gear ratio, maximum speed and torque. Browse all VDI40 article numbers →
Representative photographs of Mongtec driven and static turret tooling in the VDI40 class. These are production units from the Mongtec range, not renderings — but they are shown as examples of the VDI40 product family, not as the confirmed article number for this machine. Mongtec engineering verifies the interface, clearance and correct article code for your specific machine at RFQ.
Mongtec supplies BMT and VDI (DIN 69880) driven tool holders and static tooling compatible with the DMG MORI turret platform. Interface: VDI40 Trifix. The exact configuration is confirmed by Mongtec engineering at RFQ.
For the open VDI shank itself, yes — VDI (DIN 69880) is an open machine-side standard, so sourcing the holder elsewhere does not require a turret modification. Note however that this machine's turret carries the proprietary Sauter TRIFIX® alignment interface, which Mongtec does not supply and does not claim compatibility with; suitability for a given station is confirmed by Mongtec engineering at RFQ. 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.
All VDI40 driven tool holders · All 228 article numbers with full specification · How to choose a driven tool holder · PSC / ISO 26623 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 →
Whether a holder mounts is decided by the turret bolt pattern and the drive coupling, not by the machine name alone. The types below are published by Mongtec for this interface; the exact article number is confirmed against the actual turret drawing at RFQ.
VDI40 article numbers · BMT bolt pattern reference (38 patterns) · All driven tool types and turret interfaces