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Taper Adapter Mt3 - Jt4

Taper Adapter Mt3 - Jt4
Taper Adapter Mt3 - Jt4
PACK SIZE
The price displayed for this product is the unit price of the product. Where a PACK SIZE is indicated, this refers to the recommended ordering quantity and is also indicative of how many of these products are packaged in a box.
  • Stock: 286
  • Model: CMJT4-2
  • Weight: 0.48kg
  • Pack Dim: 145.00mm x 34.00mm x 34.00mm
  • UPC: 6009515888497
Price:
R 165.37
Ex VAT: R 143.80

Available Options

Tork Craft Taper Adapter — MT3 to JT4 (Morse → 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).

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 tapers—never sand or file the seating surfaces.

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 assembly—no special tools needed.

Safety

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

Specifications

Description Spec
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)

 

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