Kennametal 3763073 Shell Mill Holder HSK100A 1 Inch Pilot

Product Description

The KENNAMETAL 3763073 is an HSK100A taper shank shell mill holder designed for use on CNC machining centers equipped with through-spindle coolant delivery. The holder features a 1.0000-inch pilot diameter and a nose diameter of 2.7520 inches, with a flange-to-nose projection of 2.2500 inches. Through-spindle coolant passes directly to the cutting tool, supporting high-performance face milling, shoulder milling, and other shell mill applications. A 1/2-20 lock screw thread secures the shell mill to the holder. This holder is installed and set up by CNC machinists and toolroom technicians working with HSK100A-spindle horizontal or vertical machining centers.

This shell mill holder is suited for production machining environments where consistent tool runout and reliable coolant delivery are critical. The HSK100A interface provides high rigidity and repeatability, making it appropriate for demanding metal-removal operations in aerospace, automotive, die-and-mold, and general precision machining shops. The through-spindle coolant path supports extended tool life and chip evacuation in deep-pocket or high-feed milling scenarios. Package quantity is 1 unit.

Key Features

• HSK100A taper shank interface for high rigidity and repeat positioning accuracy
• 1.0000-inch pilot diameter accommodates standard shell mill bores
• Through-spindle coolant delivery directs coolant to the cutting zone
• 2.2500-inch flange-to-nose projection for reach in typical face milling setups
• 2.7520-inch nose diameter provides broad clamping surface for shell mill retention
• 1/2-20 lock screw thread for secure shell mill attachment

Compatibility

Designed for use with HSK100A-spindle CNC machining centers that support through-spindle coolant. Compatible with shell mills having a 1-inch pilot bore and standard lock screw retention.

Installation Notes

Installation is performed by qualified CNC machinists or toolroom personnel. The machine spindle must be fully powered down and the tool changer disabled before mounting or removing the holder. Confirm the HSK100A taper and spindle bore are clean and free of chips or burrs before seating the holder. Torque the shell mill lock screw to the shell mill or toolholder manufacturer's specification using a calibrated torque wrench; do not use impact tools on the lock screw.