Description
Fast bit changes without a collet wrench. The Proxxon MICROMOT three-jaw keyless chuck replaces the standard collet on compatible Micromot rotary tools and the MF 70 mill, allowing you to quickly swap accessories with 0.3–3.2mm (1/64"–1/8") shanks by hand — no wrench or collet change required. The three-jaw self-centering design grips round shanks securely and releases instantly.
Compatibility note: This chuck is not compatible with the IBS/E Professional Rotary Tool, the IBS/A Cordless Professional Drill/Grinder, or the GG 12 Engraver. It fits all other Micromot rotary tools, the WS 90 Angle Attachment, and the MF 70 MICRO Mill.
Key Specifications
- Capacity: 1/64"–1/8" (0.3–3.2mm)
- Thread: M8 × 0.75mm
- Type: Three-jaw keyless (self-centering, no wrench needed)
- Compatible with: All Micromot rotary tools (except IBS/E, IBS/A, GG 12), WS 90 Angle Attachment, MF 70 MICRO Mill
- Part No.: 28941
Collet vs. Three-Jaw Chuck — Which Do You Need?
- Three-jaw keyless chuck (No. 28941) — this chuck: Accepts any shank from 0.3–3.2mm without changing collets. Best when you frequently swap between different accessory sizes and want fast, tool-free changes.
- Steel collet set (No. 28940): Individual collets for each shank size. Best for precision work where maximum concentricity and grip security matter more than quick changes.
Frequently Asked Questions
Does this fit the IBS/E?
No — this chuck is not compatible with the IBS/E Professional Rotary Tool or the IBS/A Cordless Professional Drill/Grinder. For those tools, use the standard steel collet set (No. 28940).
Does this fit the MF 70 mill?
Yes — the three-jaw chuck fits the MF 70 MICRO Mill and is useful for quickly mounting drill bits for drilling operations without changing collets.
What is the thread specification?
M8 × 0.75mm — this is the standard Micromot spindle thread for compatible tools.
Works Well With
- Proxxon MICROMOT Steel Collet Set — 6-Piece (No. 28940) — precision collets for the same Micromot tools
- Proxxon MICRO Mill MF 70 (No. 37110) — compatible bench mill
- Proxxon HSS Twist Drill Set — 10-Piece (No. 28874) — drill bits for quick-change drilling operations
- Proxxon TiN Brad Point Drill Set — 6-Piece (No. 28876) — premium wood drilling bits
Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. For warranty claims please call 1-877-776-9966. Please see our return and refund policy here.
California Residents Prop 65 Information
WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.