Techniks 22911-2.5B End Mill Holder CAT40 1/4 in Through Coolant

Product Description

The TECHNIKS 22911-2.5B is a CAT40 taper shank end mill holder designed for use in CNC machining centers. It accepts a 1/4-inch tool shank, delivers a 2.5-inch projection from the spindle nose, and features a 25/32-inch nose diameter. Through-coolant capability directs cutting fluid directly to the tool tip, supporting higher cutting speeds and longer tool life in demanding metal-removal operations. This holder is installed by machinists and CNC setup technicians in production and job-shop environments where secure, repeatable toolholding is critical.

This end mill holder is suited for vertical and horizontal CNC machining centers equipped with CAT40 spindles. The 2.5-inch projection provides clearance for workpiece features that require extended reach while maintaining the rigidity expected from a taper-shank connection. It is a practical choice for shops running through-coolant spindles on milling operations in ferrous and non-ferrous materials.

Key Features

• CAT40 taper shank for direct spindle mounting on compatible machining centers
• 1/4-inch hole diameter accommodates standard 1/4-inch shank end mills and cutting tools
• 2.5-inch projection provides extended reach for deeper workpiece features
• Through-coolant design channels fluid to the cutting zone for improved chip evacuation and tool life
• 25/32-inch nose diameter for clearance in tight-tolerance setups

Compatibility

Designed as an OEM-style toolholding solution for CNC machining centers with a CAT40 spindle interface and through-coolant capability.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician with the machine powered down and the spindle fully stopped. Use the appropriate retention knob for the CAT40 interface and a certified toolholder tightening fixture to secure the end mill to the specified drawbar torque for your machine. Verify through-coolant port alignment with the spindle coolant circuit before operation. Inspect the taper and bore for contamination or damage before each use.