Techniks 22915-4B End Mill Holder CAT40 3/8 Bore

Product Description

The TECHNIKS 22915-4B is a CAT40 taper shank end mill holder designed for use in CNC machining centers. It accepts a 3/8 inch bore and provides 4 inches of projection from the gauge line, placing the cutting tool at a consistent, repeatable distance from the spindle face. The 1 inch nose diameter and through-coolant capability make this holder suitable for high-speed milling operations where chip evacuation and tool cooling are critical. It is installed and serviced by machinists and CNC setup technicians in production and job shop environments.

This holder is used in vertical and horizontal machining centers equipped with CAT40 spindle interfaces. The 4 inch projection is well suited for applications requiring extended reach into deep pockets or around workholding fixtures. Through-coolant delivery channels coolant directly to the cutting zone, reducing heat buildup and extending end mill life. The overall length of 6.69 inches keeps the assembly within the envelope of most standard tool changers on CAT40-equipped machines.

Key Features

• CAT40 taper shank for compatibility with CAT40 spindle tooling systems
• 3/8 inch bore accommodates standard end mill shank diameters
• 4 inch projection for extended reach in deep-pocket and fixture-clearance applications
• Through-coolant design delivers coolant directly to the cutting edge
• 1 inch nose diameter provides rigid clamping support close to the tool
• Overall length of 6.69 inches fits within standard CAT40 automatic tool changer envelopes

Compatibility

Designed as an OEM-style end mill holder for CNC machining centers equipped with a CAT40 spindle interface and through-coolant capability.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Always power down the spindle and confirm the machine is in a safe state before changing tooling. Use a calibrated torque wrench and the appropriate retention knob torque specification from the machine tool manufacturer when seating the holder in the spindle. Inspect the taper bore and holder taper for chips or contamination before seating to prevent runout and spindle damage.