Techniks 22911-4 End Mill Holder CAT40 1/4 in Bore

Product Description

The TECHNIKS 22911-4 is a CAT40 taper shank end mill holder designed to secure end mills in CNC machining centers and milling machines. It accepts a 1/4 inch bore and provides a 4 inch projection from the gage line to the nose, giving operators clearance for deep-reach milling applications. The nose diameter measures 25/32 inches. At 2.4 pounds and an overall length of 6.687 inches, this holder is built for stable, repeatable tool engagement in production machining environments. It is typically installed by CNC machinists and toolroom technicians.

This end mill holder is suited for vertical and horizontal machining centers equipped with a CAT40 spindle interface. The 4 inch projection makes it appropriate for workpieces requiring extended reach where standard-length holders would cause interference. It is commonly used in job shops, production facilities, and toolrooms running steel, aluminum, and other common workpiece materials with 1/4 inch shank end mills.

Key Features

• CAT40 taper shank for direct spindle mounting on CAT40 machining centers
• 1/4 inch bore accommodates standard 1/4 inch shank end mills
• 4 inch projection provides extended reach for deep-cavity milling
• 25/32 inch nose diameter for clearance in tight workholding setups
• No through-coolant configuration - standard external coolant application
• Overall length of 6.687 inches for predictable gage-line measurement

Compatibility

Designed as an OEM-style end mill holder for CNC machining centers with a CAT40 spindle taper interface accepting 1/4 inch shank tooling.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before changing tooling. Clean the CAT40 taper and spindle bore thoroughly before seating the holder to prevent runout caused by chips or debris. Torque the drawbar or retention knob according to the machining center manufacturer specifications - do not use impact tools on the drawbar.