Magnum Morse Taper 3 to Jacobs Taper 4 Drill Chuck Adapter (AMT3JT4)

Facilitating the mounting of high-capacity Jacobs Taper 4 (JT4) chucks onto Morse Taper 3 (MT3) machinery, the Magnum AMT3JT4 Adapter ensures maximum toolholding rigidity. This arbor is manufactured from premium tool steel, precision-ground on all contact surfaces to eliminate runout and maximize torque transfer. The MT3 - JT4 configuration is a common requirement for industrial drill presses and lathe tailstocks where heavy-diameter bits and high axial loads are standard.

Features

• JT4 Taper Interface - Optimized for large-format keyed or keyless drill chucks utilizing the Jacobs 4 standard.
• Self-Holding Design - Provides a secure, taper-locked fit in the machine spindle without the need for additional fasteners.
• One-Piece Steel Construction - Engineered as a solid unit for superior load distribution and structural durability.

Specifications

• Supplier Part Number: AMT3JT4
• KMS Product Code: MAG-AMT3JT4

Common Shop Applications

• Mounting Jacobs taper drill chucks into the tailstock of a lathe.
• Adapting specialized chucks to a drill press spindle.

Recommended Shop Add-Ons

• Don't forget: Magnum Drill Chuck - The required component to securely hold your drill bits on this arbor.
• Our machining experts suggest: Magnum Drift Key - Essential for safely ejecting Morse taper tooling from your machine's spindle without damage.

Frequently Asked Questions

Q: How do I install a chuck onto this adapter? A: Clean both taper surfaces thoroughly, retract the chuck jaws fully, and tap the chuck onto the adapter using a brass hammer or wooden block.

Q: Will this adapter slip under heavy load? A: The precision-ground friction fit of both the Morse and Jacobs tapers ensures the adapter self-locks under rotational load, preventing slippage.