Value Collection SC00186536 MT5 to MT3 Morse Taper Extension

Product Description

The VALUE COLLECTION SC00186536 is a Morse taper extension adapter designed to connect tooling with different taper sizes in a machine spindle setup. It accepts an MT5 inside taper and presents an MT3 outside taper, allowing a smaller-shank tool to run in a larger spindle bore. The adapter measures 10.5 inches overall length (OAL) and is constructed from medium carbon steel with a soft body and hardened tang. The hardened tang resists the drive forces at the spindle while the softer body allows for controlled fit and seating. This type of adapter is typically installed by machinists or tool-room technicians working with drill presses, lathes, or milling machines.

This adapter is suited for machine shop environments where a tool with an MT3 shank must be used in a spindle or quill bored to MT5. The extended OAL of 10.5 inches increases reach, which is useful when additional clearance is needed between the spindle face and the workpiece or fixture. It fits into standard MT5 spindle bores and accepts any MT3-shank tooling including drill bits, end mill holders, and chuck arbors. Installation requires no special setup beyond standard taper-seating procedure.

Key Features

• MT5 inside taper accepts standard MT5 spindle bores
• MT3 outside taper fits any MT3-shank tooling
• 10.5 inches OAL provides extended reach between spindle and workpiece
• Medium carbon steel construction for durability under machining loads
• Soft body with hardened tang for proper drive engagement and controlled seating

Compatibility

Designed as an OEM-style replacement or direct-fit adapter for machine tools with MT5 spindle bores requiring MT3-shank tooling interface.

Installation Notes

Installation is performed by qualified machinists or tool-room personnel. Power down and lock out the machine spindle before inserting or removing any taper adapter. Clean both the spindle bore and the adapter taper surfaces thoroughly before seating to ensure full contact and accurate alignment. Use a taper drift through the spindle drift slot to remove the adapter — never strike the adapter body directly with a hammer.