Jacobs 30423DN MT2 to MT3 Morse Taper Reducing Sleeve

Product Description

The JACOBS 30423DN is a standard Morse taper reducing sleeve designed to adapt an MT2 inside taper to an MT3 outside taper. This sleeve allows tooling with a Number 2 Morse taper shank to be mounted in a machine spindle or holder with a Number 3 Morse taper socket. Constructed with a soft body and hardened tang, the sleeve provides secure tool retention while allowing straightforward ejection during tool changes. It measures 4.38 inches overall length with a 0.75 inch projection. Machinists and machine tool technicians install this type of adapter in lathes, drill presses, milling machines, and similar equipment to bridge taper size mismatches between tooling and spindles.

This reducing sleeve suits applications where tooling shank sizes differ from the host machine spindle taper. Typical installations include drill press quills, lathe tailstocks, and milling machine spindles requiring a step-down from MT3 to MT2. The hardened tang engages the machine drift slot for clean sleeve removal without damage to the bore. It is suited for production and job-shop environments where quick taper-adapter changes are routine.

Key Features

• MT2 inside taper accepts Number 2 Morse taper shank tooling
• MT3 outside taper seats in Number 3 Morse taper spindles and holders
• Soft body construction with hardened tang for reliable drift ejection
• 0.75 inch projection for proper seating depth
• 4.38 inch overall length for standard spindle fitment
• UNSPSC Code 27112800 classified industrial tooling adapter

Compatibility

Designed as a standard OEM-style reducing sleeve for machine tools with MT3 spindle sockets requiring MT2 shank tooling, such as drill presses, lathes, and milling machines.

Installation Notes

Installation and removal should be performed by a qualified machinist or machine tool technician. Always power down and lock out the machine before inserting or removing the sleeve. Insert the sleeve by hand into the spindle socket, ensuring full taper-on-taper seating with no gap before operating. Use a proper drift bar through the spindle drift slot to eject the sleeve cleanly - never use impact tools directly on the sleeve body.