Mongtec M5146 – VDI25 Axial Driven Tool Holder, ER25

M5146 is an axial driven (live) tool holder for the VDI25 turret interface, using ER25 collets, rated to 6,000 rpm and 20 Nm. Mongtec Precision is a Taiwanese brand, designed and engineered in Taichung, Taiwan.

Specification

Article number	M5146
Turret interface	VDI25 — VDI per DIN 69880 (cylindrical shank)
Configuration	Axial Tool Head, Square
Orientation	Axial
Collet system	ER25
Drive ratio	1:1
Max spindle speed	6,000 rpm
Max torque	20 Nm
Brand	Mongtec Precision Inc. — Taiwanese brand, designed and engineered in Taichung, Taiwan

Mongtec driven tool holder with drive shank and coupling shown separately

Mongtec driven tool holder with surface-treated body and ER collet output

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 M5146 itself.

What M5146 does on the machine

The driven spindle points along the Z axis, parallel to the lathe spindle. This is the configuration for face drilling, face tapping and end milling on the part face.

Square body — the most rigid of the axial layouts and the usual first choice where turret clearance allows it.

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 M5146 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 M5146 as the article number — that still comes from engineering.

Other VDI25 holders in the same configuration

Related VDI25 configurations

Frequently asked

What machines does the Mongtec M5146 fit?

M5146 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 M5146 run?

M5146 is rated to 6,000 rpm with 20 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 M5146 take?

M5146 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 M5146?

Yes. Mongtec supplies the full dimensioned drawing for M5146 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 M5146 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 M5146 are supplied by email once the enquiry is open.

Mongtec M5146 — VDI25 axial driven tool holder