Value Collection SC00186130 MT1 to MT3 Morse Taper Extension

Product Description

The VALUE COLLECTION SC00186130 is a Morse taper extension adapter designed to mate an MT1 inside taper with an MT3 outside taper, increasing the effective reach of a spindle or quill in lathe, drill press, and milling applications. The adapter measures 6-7/8 inches overall length (OAL) and is constructed from medium carbon steel with a soft body and hardened tang. This combination provides adequate toughness in the shank while resisting deformation at the drive end. Machinists and toolroom technicians use this adapter when a standard sleeve length is insufficient for a given setup or when extending the tool reach inside a deep spindle bore is necessary.

This adapter is suited for machine shop environments where MT1-shank tooling — such as small twist drills, end mill holders, or center drills — must seat into an MT3 spindle or tailstock quill. Typical installations include benchtop drill presses, engine lathes with MT3 tailstocks, and vertical mills with MT3 quills. The extension configuration allows the operator to position cutting tools deeper into the work envelope without modifying the machine or the tooling itself.

Key Features

• MT1 inside taper accepts standard MT1-shank tooling
• MT3 outside taper seats directly into MT3 spindles and tailstock quills
• 6-7/8 inches OAL provides additional reach beyond a standard adapter sleeve
• Medium carbon steel construction balances machinability with service durability
• Soft body with hardened tang resists drive-slot wear during tool changes
• Adapter type configuration allows tool extension without altering existing tooling

Compatibility

Designed as an OEM-style replacement and general-purpose adapter for machine tools equipped with MT3 spindle or tailstock bores requiring MT1 tooling extension.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing any taper adapter. Clean both the inside bore of the spindle and the outside taper of the adapter with a lint-free cloth to remove chips, oil, and debris before seating — contamination on mating taper surfaces reduces grip and can cause tool runout. Use a proper drift punch and soft mallet against the tang slot to eject the adapter; never pry at the taper seam.