Mongtec M4046 — VDI25 driven driven tool holder

M4046 is a driven driven (live) tool holder for the VDI25 turret interface, using ER25 collets, rated to 6,000 rpm and 40 Nm. Mongtec Precision is a Taiwanese brand, designed and engineered in Taichung, Taiwan.

Request a quote for M4046 →

Specification

Article numberM4046
Turret interfaceVDI25 — VDI per DIN 69880 (cylindrical shank)
ConfigurationVDI Driven Tool Holders
OrientationDriven
Collet systemER25
Drive ratio1:1
Max spindle speed6,000 rpm
Max torque40 Nm
BrandMongtec Precision Inc. — Taiwanese brand, designed and engineered in Taichung, Taiwan

Source: Mongtec VDI & BMT Driven Tools catalogue, Ver 2026.07.

Mongtec driven tool holder model M3506 with knurled output collar
Mongtec driven tool holder model M3506 with knurled output collar
Mongtec driven tool holder with high-pressure coolant connections
Mongtec driven tool holder with high-pressure coolant connections

Representative photographs of Mongtec driven tooling in this class — production units, not renderings. Shown as examples of the VDI25 family, not as a photograph of M4046 itself.

What M4046 does on the machine

A driven (live) tool holder that takes rotary drive from the turret.

Gear ratio 1:1 — tool spindle speed equals turret drive speed. The direct relationship makes speeds and feeds straightforward to calculate from the machine's live-tool rating.

Do not order against the label alone. “VDI25” fixes the shank per DIN 69880, but pocket depth, clamping system and drive coupling still vary between machine builders. Send Mongtec your machine model and a photograph of the turret face — engineering checks M4046 against the actual turret drawing before anything is quoted. That check is free and takes one email.

Machines with a VDI25 turret

Mongtec publishes tooling pages for these machines with a declared VDI25 turret. Confirming your model here does not confirm M4046 as the article number — that still comes from engineering.

Other VDI25 holders in the same configuration

Article no.ColletRatioMax speedTorque
M9046————

Related VDI25 configurations

Frequently asked

What machines does the Mongtec M4046 fit?

M4046 is built for the VDI25 turret interface. Because VDI shank dimensions follow DIN 69880, but turret pocket depth, clamping system and drive coupling still vary between machine builders. Send Mongtec your machine model and a photo of the turret face and engineering confirms the fit before anything is quoted.

What speed and torque can M4046 run?

M4046 is rated to 6,000 rpm with 40 Nm of torque at a 1:1 drive ratio. The usable figure is whichever is lower: this rating or your machine's live-tool drive rating.

What collet does M4046 take?

M4046 takes ER25 collets. Collets and nuts are supplied separately; specify the shank diameters you intend to run and Mongtec quotes the collet set with the holder.

Is a dimensioned drawing available for M4046?

Yes. Mongtec supplies the full dimensioned drawing for M4046 by email once an enquiry is open, so the drawing is matched to your actual machine and turret configuration rather than a generic sheet.

Get M4046 quoted

Send the machine model, the turret station you want to use and the tools you intend to run. Anything you do not know, Mongtec works out from the machine model — an incomplete enquiry is still worth sending. Dimensioned drawings for M4046 are supplied by email once the enquiry is open.

Request M4046 →

All VDI25 article numbers · How to choose a driven tool holder · All turret interfaces