Accupro 778932 CAT40 to 3MT Taper Adapter Through Coolant

Product Description

The ACCUPRO 778932 is a CAT to Morse Taper adapter designed to connect CAT40 toolholders to machine spindles or tooling with a 3MT (Morse Taper 3) inside connection. It provides a rigid, concentric interface between CAT40 outside taper tooling and 3MT inside taper shanks, making it useful when a machining center or milling setup requires Morse Taper tooling in a CAT40 spindle environment. The adapter features through-coolant capability, allowing cutting fluid to pass directly through the body to the cutting tool. Projection measures 2.95 inches and the hole diameter is 1.57 inches. Weighing 1 pound, this adapter is sized for production machining environments where tool compatibility and coolant delivery are priorities.

This adapter is suited for CNC machining centers, knee mills, and similar equipment running CAT40 spindles where 3MT tooling such as drill chucks, end mill holders, or other Morse Taper accessories must be used. It supports through-coolant setups, making it appropriate for deep-hole drilling and other operations that benefit from direct coolant delivery at the cutting zone. Machinists and tool room technicians working in job shop or production environments are the primary installers of this type of adapter.

Key Features

• CAT40 outside taper mates directly with CAT40 spindle toolholders
• 3MT inside taper accepts standard Morse Taper 3 tooling
• Through-coolant design channels cutting fluid to the tool tip
• 2.95 inch projection provides clearance for tooling engagement
• 1.57 inch hole diameter accommodates 3MT shank geometry
• Compact 1 pound weight minimizes added spindle load

Compatibility

Designed for use with CAT40 outside taper spindle systems and 3MT inside taper tooling. Verify spindle pull-stud configuration and drawbar retention compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or tool room technician. Power down and lock out the machine spindle before inserting or removing taper adapters. Ensure all mating taper surfaces are clean and free of chips, oil film, or burrs before seating the adapter, as contamination on taper surfaces can cause runout or retention failures. Verify that the pull-stud and retention knob are correctly torqued to the machine manufacturer's specifications before operating the spindle.