Kennametal 1026250 End Mill Holder CAT50 3/4 Inch

Product Description

The KENNAMETAL 1026250 is a CAT50 taper shank end mill holder designed for use in CNC machining centers that require precise tool retention and through-coolant delivery. The holder features a 3/4 inch bore diameter and a 1-3/4 inch nose diameter, with a projection of 3.75 inches from gauge line to tool tip. It is balanced to 12,000 RPM, making it suitable for high-speed milling operations. The drawbar thread size is 1-8. Weighing 8.052 pounds, this is a substantial toolholder intended for heavy-duty machining applications. Machinists and CNC setup technicians install this holder in CAT50-spindle machines.

This end mill holder is used in vertical and horizontal CNC machining centers equipped with CAT50 spindles. The through-spindle coolant design channels cutting fluid directly through the holder and to the cutting tool, improving chip evacuation and tool life during high-speed or deep-cavity milling operations. It is appropriate for production machining environments in aerospace, automotive, die-mold, and general metalworking shops where consistent tool runout and coolant delivery are critical to part quality.

Key Features

• CAT50 taper shank for compatibility with CAT50-spindle machining centers
• 3/4 inch bore diameter with 5.94 inch clamping depth for secure tool retention
• Through-spindle coolant path directs fluid to the cutting edge
• Balanced to 12,000 RPM for high-speed milling stability
• 1-3/4 inch nose diameter and 3.75 inch projection for extended reach applications
• Drawbar thread size 1-8 per CAT50 standard

Compatibility

Designed for use in CNC machining centers with a CAT50 taper spindle interface accepting a 1-8 drawbar thread.

Installation Notes

Installation and removal of CAT50 toolholders should be performed by a qualified machinist or CNC setup technician with the spindle fully powered down and the machine control in a safe state. Use the correct drawbar torque procedure specified by the machine tool manufacturer. Ensure the taper shank and spindle bore are clean and free of chips or coolant residue before seating the holder. Inspect the holder for visible damage or fretting before each use.