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Adapt machines with an MT3 (Morse Taper #3) spindle to accept B22 taper-mount drill chucks. This hardened, precision-ground adaptor provides concentric seating for smooth, accurate drilling on drill presses, lathe tailstocks and milling machines in drill mode.
Extra Information
Clean and degrease both tapers before assembly; debris reduces holding power.
Seat the chuck with firm hand pressure on a solid surface—avoid striking the chuck body.
Remove using the machine’s eject feature or the correct taper drift/wedge.
Pro Tip
Add a small witness mark across adaptor and chuck; reassembling in the same orientation can help preserve best concentricity.
If insertion feels rough, lightly stone only raised burrs—never sand or file the precision seating surfaces.
Features
Conversion: MT3 male shank → B22 male taper for B22-bore chucks.
Precision-ground tapers to minimize run-out and improve accuracy.
Hardened steel construction for durability under workshop use.
Smooth seating surfaces for reliable fit and easy release.
Industry-standard geometry compatible with common machines and arbors.
Benefits
Versatility: mount B22 drill chucks on MT3 machines without changing arbors.
Accuracy: concentric fit improves hole quality and tool life.
Fast setup: simple press-fit install; no special tools required for assembly.
Safety
Disconnect power before installing or removing adaptors/chucks.
Ensure tapers are fully seated; avoid side-loading small drills.
Use in rotary drilling only—do not use hammer/impact with taper-mounted chucks.
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