Techniks 22921-1.75F End Mill Holder CAT40 3/4 Inch

Product Description

The TECHNIKS 22921-1.75F is a CAT40 taper shank end mill holder designed for precision milling applications on CNC machining centers. It accepts a 3/4 inch bore and delivers a 1.75 inch projection from the spindle face, positioning the cutting tool at a consistent, repeatable gauge length. The 1.75 inch nose diameter provides solid clamping support, and the through-coolant design channels coolant directly to the cutting zone for improved chip evacuation and tool life. Overall length is 4.437 inches. This holder is installed by CNC machinists and toolroom technicians working with CAT40-equipped vertical and horizontal machining centers.

This end mill holder fits CAT40 spindle configurations commonly found in production and job-shop environments. The through-coolant feature makes it well suited for deep-pocket milling, high-feed operations, and any application where direct coolant delivery reduces heat buildup at the tool tip. The 3/4 inch bore accommodates standard straight-shank end mills in that diameter. The 1.75 inch projection is a short-gauge setup that minimizes overhang and improves rigidity during heavy cuts.

Key Features

• CAT40 taper shank for compatibility with CAT40 CNC spindles
• 3/4 inch bore for standard straight-shank end mills
• 1.75 inch projection for short-gauge, rigid tool setup
• 1.75 inch nose diameter for stable clamping support
• Through-coolant design for direct coolant delivery to the cutting edge
• Overall length of 4.437 inches

Compatibility

Designed for use in CAT40 taper spindle machining centers requiring a 3/4 inch bore end mill holder with through-coolant capability.

Installation Notes

Installation requires a CAT40 pull stud and a properly calibrated tool presetter or gauge to confirm projection length before running. Always power down the machine and follow lockout/tagout procedures before mounting or removing toolholders from the spindle. Ensure the bore and collet contact surfaces are clean and free of chips before assembly. Torque the end mill setscrew per the machine tool builder specifications using the appropriate hex key.