Global Cnc Industries 86-07 4B MT4 Morse Taper Adapter

Product Description

The GLOBAL CNC INDUSTRIES 86-07 #4B is a Morse taper adapter that converts an MT4 inside taper to a straight shank configuration. Machined from alloy steel and hardened and ground throughout, this adapter is built for precision work in manual mills, lathes, and drill presses where consistent taper-to-shank alignment is critical. Overall length is 6.125 inches, with a projection of 0.625 inches and a length under head of 5.5 inches. It is intended for use by machinists and tool-and-die professionals who require reliable, repeatable tooling connections in production or job-shop environments.

This adapter is suited for machine shops running MT4-spindle equipment that must accept straight-shank tooling such as drill chucks, boring heads, or end mill holders. The hardened and ground construction ensures dimensional accuracy across repeated tool changes and heavy-duty cutting cycles. It is a practical solution for both production runs and one-off setups where consistent taper engagement and shank concentricity are required.

Key Features

• MT4 inside taper accepts standard MT4 tooling and accessories
• Straight shank output for compatibility with straight-bore spindles and holders
• Hardened and ground throughout for dimensional consistency and long service life
• Alloy steel construction provides strength under cutting loads
• 6.125-inch overall length with 0.625-inch projection and 5.5-inch length under head

Compatibility

Designed as an OEM-style replacement adapter for machine tools equipped with MT4 inside taper spindles requiring a straight shank interface.

Installation Notes

Installation is performed by machinists or qualified machine tool technicians. Before installing, power down and lock out the machine spindle per OSHA lockout/tagout procedures. Clean both the taper bore and shank mating surfaces thoroughly before seating to ensure full contact and prevent fretting. Do not use the adapter beyond the load ratings of the host machine spindle.