Value Collection 214-8145 MT4 Inside MT5 Outside Reducing Sleeve

Product Description

The VALUE COLLECTION 214-8145 is a standard Morse taper reducing sleeve designed to adapt an MT5 spindle or socket to accept MT4 tooling. The sleeve is hardened and ground throughout for dimensional accuracy and long service life under machining loads. It features a 0.75 inch projection, a body diameter of 48 millimeters, and an overall length of 300 millimeters. Machinists and tool room technicians install this sleeve directly into MT5-tapered spindles, quills, or tailstocks to run MT4 drills, reamers, arbors, and other taper-shank cutting tools without an adapter change-out on the machine itself.

This reducing sleeve is suited for manual lathes, milling machines, drill presses, and boring mills equipped with an MT5 taper. It is a common shop-floor solution when a machine tool has a larger taper than the tooling requires. The hardened and ground construction maintains close taper tolerances, which reduces runout and keeps tool seating repeatable across multiple tool changes. It is intended for general metalworking applications in both production and job-shop environments.

Key Features

• MT4 inside taper accepts standard MT4 taper-shank tooling
• MT5 outside taper seats directly into MT5 spindles, quills, and tailstocks
• Hardened and ground throughout for close tolerances and reduced runout
• 0.75 inch projection for proper tool engagement and drift-key ejection clearance
• 48 millimeter body diameter provides robust wall thickness for rigidity under load
• 300 millimeter overall length suits deep-reach and standard spindle applications

Compatibility

Designed as a standard OEM-style reducing sleeve for machine tools equipped with an MT5 taper spindle, quill, or tailstock requiring MT4 taper-shank tooling.

Installation Notes

Installation is performed by qualified machinists or tool room technicians. Power down and lock out the machine before seating or removing the sleeve. Clean both the MT5 socket and the outside taper of the sleeve with a lint-free cloth to remove oil, chips, and debris before insertion, as contamination will cause misalignment and runout. Use the machine drift key slot and a proper drift key to eject the sleeve; never strike the tooling directly with a hammer.