Accupro 778938 CAT50 to 3MT Taper Adapter Through Coolant

Product Description

The ACCUPRO 778938 is a CAT to Morse Taper adapter designed to connect CAT50 outside taper tooling to 3MT inside taper tooling in CNC machining centers and milling machines. The adapter features a 1.77-inch projection and a 1.57-inch hole diameter, with through-coolant capability to support high-pressure coolant delivery directly to the cutting tool. This type of adapter is installed by machinists and tool crib technicians to allow Morse taper tooling to run in CAT50 spindles without requiring a full toolholder change. The through-coolant passage helps extend tool life and improve chip evacuation during drilling and boring operations.

This adapter is suited for production machining environments where CAT50 spindle machines need to accept 3MT shank tooling such as drill chucks, reamers, and boring heads. It is a common fitment in job shops and manufacturing facilities running vertical or horizontal machining centers with CAT50 spindle interfaces. The 1.77-inch projection keeps the tool gauge length predictable for setup. Through-coolant support makes it compatible with machines equipped with high-pressure coolant systems.

Key Features

• CAT50 outside taper interfaces directly with CAT50 spindles
• 3MT inside taper accepts standard Morse taper shank tooling
• Through-coolant passage supports high-pressure coolant delivery to the cutting edge
• 1.77-inch projection for consistent gauge length at setup
• 1.57-inch hole diameter accommodates standard 3MT tooling shanks
• Weighs 1 pound for easy handling during tool changes

Compatibility

Designed as an OEM-style replacement adapter for CAT50 spindle machining centers requiring 3MT inside taper tooling interfaces.

Installation Notes

Installation is performed by qualified machinists or tool crib personnel. Power down and lock out the machining center spindle before installing or removing the adapter. Use the correct retention knob and drawbar torque specifications provided by the machine manufacturer for CAT50 tooling. Inspect the taper bore and the adapter shank for nicks, burrs, or contamination before seating to ensure full taper contact and runout accuracy.