SPIRO-MK - the drill chuck for maximum performance and precision

  • Unmatched Stability: One-piece drill chuck body and morse taper

  • Maximum Clamping Force: Integrated automatic re-tightening mechanism

  • ROBUST Clamping: Extra-Heavy-duty retaining ring

  • Built for EXTREMe durability: all-steel drill chuck design

  • ultra-precise clamping: Precision jaws made from hardened steel

The SPIRO‑MT is a high‑performance drill chuck designed for use on machine tools and drill presses. Developed by RÖHM, the inventor and pioneer of the drill chuck, it represents the highest standards of quality and engineering excellence.

Thoughtful design, premium materials, and precision manufacturing make the SPIRO‑MT exceptionally robust and durable. Innovative by design: the morse taper interface is integrated directly into the chuck. The chuck and morse taper form a single unit, providing maximum stability and significantly reducing interface‑related losses. The high‑precision morse taper exceeds the AT3 gauge tolerance requirements according to DIN 228 B, ensuring outstanding runout accuracy.

Another key advantage is the unique clamping mechanism: the higher the load, the greater the clamping force automa tically becomes. This self‑tightening effect ensures secure tool holding, even under demanding drilling conditions.

Enables heavy-duty drilling

Robust design and maximum clamping force.

Superior drilling quality

0.05 mm runout accuracy across the entire clamping range.

Minimal drill wear

No slipping, no seizure, no breakage.

greater working flexipility

21 mm additional workin gheight means fewer repositioning operations.

built for years of service

A drill chuck with legendary durability.

Variants & technical specifications

Item No. Clamping Range, mm Mounting OutsideØ, mm Chuck Length open, mm Overall Length open, mm
1422294 1-13 MK2 50 86 166
1422299 1-13 MK3 50 86 185
1422302 1-13 MK4 50 86 210
1422286 3-16 MK2 55 89 169
1422234 3-16 MK3 55 89 188
1422289 3-16 MK4 55 89 213

Fact Sheet
SPIRO-MT
German / English / French