Mongtec BMT55 Driven (Live) Tool Holders

Mongtec publishes 19 BMT55 driven tool holder article numbers. Interface: BMT (machine-builder flange pattern). Published speed range 6,000–8,000 rpm, torque up to 70 Nm. Mongtec Precision is a Taiwanese brand, designed and engineered in Taichung, Taiwan.
Article codes are machine-builder specific. The codes below are the published range for this turret interface. Mounting and drive-coupling details differ between machine builders even within the same nominal interface size, so Mongtec engineering confirms the correct article code, clearance and coupling for your specific machine at RFQ.

Published BMT55 article numbers

Source: Mongtec VDI & BMT Driven Tools catalogue, Ver 2026.07. This is the published range for the BMT55 interface, not a confirmed fit for a specific machine configuration.

Axial Tool Holders-B55,External Coolant — 4 article numbers

Article no.ColletRatioMax speedTorque
M4117ER321:16000 rpm70 Nm
M6117ER251:16000 rpm40 Nm
M6317ER251:18000 rpm40 Nm
M7317ER321:18000 rpm70 Nm

Axial Tool Holders-B55,Internal/Through Coolant — 2 article numbers

Article no.ColletRatioMax speedTorque
M1817ER251:18000 rpm40 Nm
M9617ER251:16000 rpm40 Nm

Radial Tool Holders-B55,External Coolant — 10 article numbers

Article no.ColletRatioMax speedTorque
M0317ER251:16000 rpm40 Nm
M1117ER251:16000 rpm40 Nm
M1317ER321:16000 rpm70 Nm
M2317ER251:16000 rpm40 Nm
M3317ER321:16000 rpm70 Nm
M3417ER251:16000 rpm40 Nm
M5317ER321:16000 rpm70 Nm
M8017ER251:16000 rpm40 Nm
M9017ER251:16000 rpm40 Nm
M9217ER321:16000 rpm70 Nm

Radial Tool Holders-B55,Internal/Through Coolant — 3 article numbers

Article no.ColletRatioMax speedTorque
M0717ER321:16000 rpm70 Nm
M6617ER251:16000 rpm40 Nm
M8617ER251:16000 rpm40 Nm

Lathe models on this site using BMT55

Mongtec BMT55 tooling

Driven and static turret tooling from the Mongtec BMT55-class range. Representative photographs of production units — the correct article number for your machine is confirmed by Mongtec engineering at RFQ.

Mongtec BMT driven (live) tool holder with ER collet chuck and internal coolant port
Mongtec BMT driven (live) tool holder with ER collet chuck and internal coolant port
Mongtec BMT driven tool holder with ER25 collet chuck
Mongtec BMT driven tool holder with ER25 collet chuck
Mongtec BMT60 driven tool holder, ER32 collet, engraved speed and torque rating
Mongtec BMT60 driven tool holder, ER32 collet, engraved speed and torque rating
Mongtec BMT static turret tool holder, OD type, machined and surface-treated body
Mongtec BMT static turret tool holder, OD type, machined and surface-treated body
Mongtec BMT double-OD static turret tool holder, twin bore
Mongtec BMT double-OD static turret tool holder, twin bore
Mongtec BMT static turret tool holder with twin boring-bar bores
Mongtec BMT static turret tool holder with twin boring-bar bores

Other turret interfaces

← All turret interfaces and the VDI / BMT explainer

Frequently asked questions

How many BMT55 driven tool holders does Mongtec publish?

19 article numbers, covering Axial Tool Holders-B55,External Coolant, Axial Tool Holders-B55,Internal/Through Coolant, Radial Tool Holders-B55,External Coolant, Radial Tool Holders-B55,Internal/Through Coolant.

What speed and torque are available for BMT55?

Published BMT55 holders run 6,000–8,000 rpm with torque up to 70 Nm. The exact rating depends on holder type and gear ratio.

Request BMT55 cross-reference & quote

All 228 Mongtec driven tool holder article numbers · How to choose a driven tool holder