Kennametal 1025946 End Mill Holder CAT40 1 Inch Hole

Product Description

The KENNAMETAL 1025946 is a CAT40 taper shank end mill holder designed for use in CNC machining centers where secure tool clamping and coolant delivery are required. The holder features a 1 inch bore diameter and a 4 inch projection, giving machinists the clearance needed for deeper cuts and fixture clearance. A 2 inch nose diameter provides a robust clamping interface, while the through-spindle coolant design channels coolant directly to the cutting edge for improved chip evacuation and tool life. The overall length is 6.687 inches and the unit is balanced to 12000 RPM, making it suitable for high-speed milling operations. A 5/8-11 drawbar thread size meets standard CAT40 spindle requirements.

This end mill holder is suited for production and job-shop CNC milling environments running CAT40 spindle interfaces. Typical applications include face milling, profile milling, and pocketing operations where extended projection and through-coolant capability are priorities. The 4.43 inch clamping depth ensures a secure grip on standard end mill shanks. This holder is installed by machinists and CNC setup technicians in both light and heavy-duty milling centers.

Key Features

• CAT40 taper shank for compatibility with standard CAT40 spindle interfaces
• 1 inch bore diameter with 4.43 inch clamping depth for secure end mill retention
• 4 inch projection provides clearance for deep cavity and fixture-sensitive setups
• Through-spindle coolant delivery channels coolant directly to the cutting zone
• Balanced to 12000 RPM for stable high-speed milling performance
• 5/8-11 drawbar thread conforms to standard CAT40 retention requirements

Compatibility

Designed for use with CAT40 spindle taper machining centers accepting a 5/8-11 drawbar thread and 1 inch shank end mills with through-coolant capability.

Installation Notes

Installation is performed by a qualified machinist or CNC setup technician. Power down and lock out the machine spindle before inserting or removing the holder. Ensure the spindle taper and holder taper are clean and free of debris before seating. Torque the drawbar to the machine manufacturer specification using the appropriate spanner wrench — do not use impact tools on the drawbar.