| Article number | M8816 |
|---|---|
| Turret interface | VDI30 — VDI per DIN 69880 (cylindrical shank) |
| Configuration | Axial Tool Head, Round, INT Nut, Through Coolant |
| Orientation | Axial |
| Collet system | ER25 |
| Drive ratio | 1:1 |
| Max spindle speed | 6,000 rpm |
| Max torque | 40 Nm |
| Brand | Mongtec Precision Inc. — Taiwanese brand, designed and engineered in Taichung, Taiwan |
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 VDI30 family, not as a photograph of M8816 itself.
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.
Round body — a slimmer envelope that clears tight turret pockets and neighbouring stations.
Through-coolant. Coolant is routed inside the holder and delivered at the cutting edge through the collet and tool. For deep-hole drilling and tapping in stainless or titanium this is usually the difference between a tool that survives the cycle and one that does not.
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.
Mongtec publishes tooling pages for these machines with a declared VDI30 turret. Confirming your model here does not confirm M8816 as the article number — that still comes from engineering.
| Article no. | Collet | Ratio | Max speed | Torque |
|---|---|---|---|---|
| M7716 | ER25 | 1:1 | 6000 rpm | 40 Nm |
| M8016 | ER25 | 1:1 | 6000 rpm | 40 Nm |
| M9816 | ER25 | 1:1 | 6000 rpm | 40 Nm |
| M6316 | ER25 | 1:1 | 6000 rpm | 40 Nm |
M8816 is built for the VDI30 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.
M8816 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.
M8816 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.
Yes. Mongtec supplies the full dimensioned drawing for M8816 by email once an enquiry is open, so the drawing is matched to your actual machine and turret configuration rather than a generic sheet.
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 M8816 are supplied by email once the enquiry is open.
All VDI30 article numbers · How to choose a driven tool holder · All turret interfaces