
Taper Adapter Mt3 - Jt4
Price
R 165.37
Ex VAT: R 143.80
- Item No: CMJT4-2
- SKU: CMJT4-2
- UPC: 6009515888497
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 |
---|---|
Brand | Tork Craft |
Model / Cat No. | CMJT4-2 |
Product Type | Taper adapter |
Input Taper (Machine Side) | MT3 (Morse Taper #3), male |
Output Taper (Chuck Side) | JT4 (Jacobs Taper #4), male |
Material | Hardened, precision-ground steel |
Finish | Ground, smooth seating surfaces |
Typical Uses | Fitting JT4 drill chucks to MT3 drill presses, lathe tailstocks, mills (drill mode) |