Value Collection SC00186452 MT4 to MT5 Morse Taper Extension

Product Description

The VALUE COLLECTION SC00186452 is a Morse taper extension adapter designed to mate an MT4 inside taper with an MT5 outside taper, allowing a technician or machinist to extend the effective depth or reach of MT4-shanked tooling in an MT5-receptacle spindle. The adapter is machined from medium carbon steel and features a soft body with a hardened tang for durability and reliable torque transfer. Overall length is 11-7/8 inches. It weighs approximately 6.1 pounds. This type of sleeve is a standard toolroom and machine shop component installed by machinists and toolroom technicians on lathes, mills, and drill presses equipped with Morse taper spindles.

This adapter is suited for machine shop environments where tooling with an MT4 shank must be run in a machine spindle accepting an MT5 taper. Typical applications include extending drill chucks, end mill holders, arbors, and other MT4-shanked accessories into MT5 spindle bores. The extension style increases the reach of the tool below the spindle face, which is useful when additional clearance or depth is needed for the workpiece or fixture setup.

Key Features

• MT4 inside taper mates with MT4-shanked tooling
• MT5 outside taper fits MT5 spindle receptacles
• 11-7/8 inch overall length provides extended reach below the spindle face
• Medium carbon steel construction for strength and wear resistance
• Soft body with hardened tang for reliable drive and ejection
• Extension style adapter for increased tool-to-workpiece clearance

Compatibility

Designed as an OEM-style replacement and standard fitment adapter for machine spindles with an MT5 receptacle accepting MT4-shanked tooling accessories.

Installation Notes

Installation is performed by machinists or toolroom technicians. The spindle must be brought to a full stop and the machine powered down before seating or removing any Morse taper adapter. Clean both the inside bore of the spindle and the outside taper of the adapter with a lint-free cloth before insertion to ensure full taper contact and prevent fretting. Use a proper drift and mallet against the tang to eject the adapter — never strike the tooling body directly.