Kennametal 1025917 Shell Mill Holder CAT40 1 Inch Pilot

Product Description

The KENNAMETAL 1025917 is a CAT40 taper shank shell mill holder designed for milling operations requiring through-spindle coolant delivery. The holder features a 1-inch pilot diameter and an overall length of 4.38 inches, with a flange-to-nose projection of 1 inch. It accepts shell mills in the 2-1/4 to 2-3/4 inch cutting diameter range and is balanced to 12,000 RPM for stable high-speed operation. The lock screw thread size is 1/2-20. This toolholder is installed by machinists and CNC setup technicians in production and job-shop environments running CAT40-taper spindle machines.

This shell mill holder is suited for vertical and horizontal machining centers equipped with a CAT40 spindle interface. The through-spindle coolant path delivers coolant directly to the cutting zone, reducing heat and improving chip evacuation during face milling and shoulder milling operations. The 2-1/4 to 2-3/4 inch shell mill cutting diameter range covers a common class of indexable face mills used in roughing and semi-finishing of ferrous and non-ferrous workpieces. The holder weighs approximately 2.46 pounds, making it a standard-weight toolholder for its taper class.

Key Features

• CAT40 taper shank for compatibility with CAT40-spindle machining centers
• 1-inch pilot diameter with 1-inch flange-to-nose projection
• Through-spindle coolant delivery for improved chip evacuation and tool life
• Balanced to 12,000 RPM for high-speed milling stability
• Accepts shell mills in the 2-1/4 to 2-3/4 inch cutting diameter range
• 1/2-20 lock screw thread for secure shell mill retention

Compatibility

Designed for use with CAT40-taper spindle machining centers. Accepts shell mills with a 1-inch pilot bore in the 2-1/4 to 2-3/4 inch cutting diameter range.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Ensure the machine spindle is fully stopped and the tool changer is disabled before mounting or removing the holder. Clean the taper bore and holder shank thoroughly before seating to ensure proper contact and runout. Use the specified 1/2-20 lock screw and a calibrated torque wrench per the shell mill manufacturer's retention requirements.