Mongtec M4326 — VDI40 radial driven tool holder

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Specification

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

Representative photographs of Mongtec driven tooling in this class — production units, not renderings. Shown as examples of the VDI40 family, not as a photograph of M4326 itself.

What M4326 does on the machine

The driven spindle points at 90° to the lathe spindle, along the X axis. This is the configuration for cross drilling, cross tapping and slotting on the outside diameter.

Direct drive. The turret drive shaft couples straight into the tool spindle with no intermediate gear train. Fewer moving parts, less backlash and a stiffer path from the turret motor to the cutter — generally the better choice when surface finish and hole position matter.

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.

Left-hand version. Handedness has to match the turret rotation and the station you intend to use; the opposite hand will index into the wrong quadrant.

Machines with a VDI40 turret

Mongtec publishes tooling pages for these machines with a declared VDI40 turret. Confirming your model here does not confirm M4326 as the article number — that still comes from engineering.

• DMG MORI CLX 450 V6
• DMG MORI CLX 550
• DMG MORI CLX 750 V6
• DMG MORI CTX 2500 (face turret)
• DMG MORI CTX 2500 VDI40
• DMG MORI CTX beta (face turret)
• DMG MORI CTX beta 4A
• DMG MORI CTX beta Trifix
• DMG MORI CTX gamma (face turret)
• DMG MORI CTX gamma (radial turret)
• DMG MORI NLX 1500–2500 Y/SY
• EMCO Hyperturn 645 / 665
• EMCO Maxxturn 65
• HURCO TMM 10i
• Index B500
• Index G420
• Okuma LB / LU 3000M
• Okuma LB / LU 4000M
• Spinner TC 800 MCY
• Takisawa TY-2000 (VDI40 turret)
• Traub TNA 400.2 (face turret)
• Traub TNA 400.2 (radial turret)

Other VDI40 holders in the same configuration

Related VDI40 configurations

• M8526 — Axial Tool Head, Square
• M2826 — Axial Tool Head, Square
• M1726 — Radial Tool Head, Direct Drive, Right Version
• M7926 — Radial Tool Head, Direct Drive, Right Version
• M9526 — Radial Tool Head, Indirect Drive, Right Version
• M6326 — Axial Tool Head, Square
• M4526 — Axial Tool Head, Square
• M3826 — Axial Tool Head, Round, INT Nut, Through Coolant
• M6066 — Axial Tool Head, Round, INT Nut, Through Coolant
• M7066 — Axial Tool Head, Round, INT Nut, Through Coolant
• M3066 — Radial Tool Head, Indirect Drive, Right Version
• M4066 — Radial Tool Head, Indirect Drive, Right Version

Frequently asked

What machines does the Mongtec M4326 fit?

M4326 is built for the VDI40 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 M4326 run?

M4326 is rated to 5,000 rpm with 70 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 M4326 take?

M4326 takes ER32 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 M4326?

Yes. Mongtec supplies the full dimensioned drawing for M4326 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 M4326 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 M4326 are supplied by email once the enquiry is open.

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