Collis Tool 60267 Morse Taper Reducing Sleeve MT6 MT7

Product Description

The COLLIS TOOL 60267 is a standard Morse taper reducing sleeve designed to adapt an MT6 inside taper to an MT7 outside taper. It is hardened and ground throughout for dimensional accuracy and long service life under heavy cutting loads. With an overall length of 12.5 inches and a projection of 1.25 inches, this sleeve fits the toolholding requirements of large machine tools such as lathes, drill presses, and milling machines that use MT7 spindles. Machinists and toolroom technicians install this sleeve when mounting MT6-shank tooling in MT7 spindle bores.

This reducing sleeve is suited for use in industrial and production machine shop environments wherever an MT7 spindle must accept MT6-shank tooling. Common applications include large floor-model drill presses, horizontal boring mills, and heavy-duty lathes that run MT7 tapers natively. The hardened and ground construction helps maintain repeatable runout tolerances across tool changes, making it appropriate for both precision and production drilling, reaming, and boring operations.

Key Features

• MT6 inside taper accepts standard MT6-shank tooling directly
• MT7 outside taper seats in MT7 spindle bores without adapters
• Hardened and ground throughout for consistent geometry and long wear life
• 12.5 inch overall length with 1.25 inch projection for proper spindle engagement
• Standard reducing sleeve profile for straightforward installation and removal

Compatibility

Designed as an OEM-style replacement or direct-fit reducing sleeve for machine tool spindles with an MT7 bore requiring MT6-shank tooling capacity.

Installation Notes

Installation and removal should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine before inserting or drifting out any taper sleeve. Clean and inspect both the spindle bore and the sleeve taper surfaces before seating to ensure proper contact and prevent fretting. Use a proper drift key in the spindle drift slot to remove the sleeve; never strike the tooling directly.