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Tork Craft Taper Adapter Mt3 - Jt4

Tork Craft Taper Adapter Mt3 - Jt4

New 10 available
R164.16
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Warranty Type: Manufacturer Manufacturer Warranty Offered. Does not include misuse, mishandling or incorrect installation. All warranty claims will follow the manufacturers specific warranty process.
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Product details

Condition
New
Location
South Africa
Product code
CMJT4-2
Bob Shop ID
674047803

Tork Craft Taper Adapter â" MT3 to JT4 (Morse â' Jacobs)

Adapt machines with an MT3 (Morse Taper #3) spindle or arbor to accept JT4 (Jacobs Taper #4) drill chucks. This hardened, precision-ground adapter ensures concentric seating for smooth, accurate drilling on drill presses, lathe tailstocks and milling machines (drill mode).

Specifications

DescriptionSpec
BrandTork Craft
Model / Cat No.CMJT4-2
Product TypeTaper adapter
Input Taper (Machine Side)MT3 (Morse Taper #3), male
Output Taper (Chuck Side)JT4 (Jacobs Taper #4), male
MaterialHardened, precision-ground steel
FinishGround, smooth seating surfaces
Typical UsesFitting JT4 drill chucks to MT3 drill presses, lathe tailstocks, mills (drill mode)

Features

  • Conversion: MT3 male shank JT4 male taper (for JT4-bore chucks).
  • Precision-ground tapers for low run-out and reliable grip.
  • Hardened steel construction for durability in workshop use.
  • Smooth finish for clean seating and easy release.
  • Industry-standard geometry compatible with common machines and arbors.

Benefits

  • Versatility: mount JT4 chucks on MT3 machines without replacing arbors.
  • Accuracy: concentric fit improves hole quality and tool life.
  • Quick setup: press-fit assemblyno special tools needed.

Extra Information

  • Thoroughly clean and degrease both tapers before assembly.
  • Seat the chuck with a firm hand press; avoid hammering on the chuck body.
  • Remove using the machine's eject feature or correct taper drift/wedge.

Pro Tip

  • Mark the adapter and chuck with a reference line; reassemble to the same orientation to preserve best concentricity.
  • If insertion feels rough, lightly stone any raised burrs on the tapersnever sand or file the seating surfaces.

Safety

  • Disconnect power before installing/removing chucks or adapters.
  • Ensure tapers are fully seated; avoid side-loading small drills.
  • Use rotary drilling onlydo not use hammer/impact with taper-mounted chucks.
  • Wear eye protection and secure the workpiece properly.
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