Value Collection SC00187450 MT4 to MT5 Morse Taper Extension

Product Description

The VALUE COLLECTION SC00187450 is a Morse taper extension adapter designed to extend the reach of MT4-shanked tooling using an MT5 outside taper. The adapter accepts an MT4 inside taper and seats into an MT5 spindle or socket, adding length between the machine spindle and the cutting tool. Overall length is 11-7/8 inches. Constructed from medium carbon steel that has been hardened and ground throughout, this adapter delivers the rigidity and surface precision required for accurate tool alignment in drilling and boring operations. It is used by machinists and tool-and-die professionals in metalworking environments.

This adapter is suited for manual and CNC machine tools equipped with an MT5 spindle — including drill presses, lathes, and milling machines — where additional spindle-to-tool distance is needed to reach deep bores or to accommodate longer tooling setups. The hardened and ground finish ensures consistent taper contact and minimizes runout when properly seated. It is a practical solution for shops that need to bridge mismatched taper sizes or extend tooling reach without replacing existing spindle equipment.

Key Features

• MT4 inside taper accepts standard MT4-shank tooling
• MT5 outside taper seats into MT5 spindles or sockets
• 11-7/8 inch overall length provides extended reach
• Medium carbon steel construction for strength and durability
• Hardened and ground throughout for precise taper fit and reduced runout

Compatibility

Designed as an OEM-style replacement and standard fitment adapter for machine tools with MT5 spindles requiring MT4 tooling interface, such as drill presses, lathes, and milling machines. No specific model compatibility data was provided in the product input.

Installation Notes

Installation is performed by machinists or qualified machine tool operators. Power down and lock out the machine before seating or removing the adapter. Clean both the adapter taper and the spindle socket thoroughly before insertion to ensure full taper contact and prevent fretting. Use a proper drift and soft mallet to remove the adapter — never apply lateral force to the tooling to avoid damaging the taper seat.