Accupro 775452 Shell Mill Holder CAT50 1 Inch Pilot

Product Description

The ACCUPRO 775452 is a CAT50 taper shank shell mill holder designed for precision face milling and shell milling operations on machining centers. It features a 1-inch pilot diameter and a 6-inch projection from flange to nose end, giving clearance for larger setups. Through-spindle and DIN flange coolant delivery channels direct coolant directly to the cutting zone, supporting tool life and chip evacuation in demanding cuts. Total Indicated Runout (TIR) is rated at 0.0002 inches, making it suitable for applications where concentricity and surface finish tolerance are critical. Licensed machinists and CNC setup technicians are the primary installers.

This holder is suited for horizontal and vertical machining centers equipped with CAT50 spindles. The 6-inch flange-to-nose projection accommodates setups requiring additional reach. It accepts shell mills with a cutting diameter range of 2-1/4 to 2-3/4 inches. The 1/2-20 lock screw thread size is a standard interface for compatible shell mill bodies. Typical applications include face milling of ferrous and non-ferrous workpieces in production and job-shop environments where coolant-through capability is required.

Key Features

• CAT50 taper shank for compatibility with standard CAT50 spindle interfaces
• 1-inch pilot diameter with 6-inch flange-to-nose projection for extended reach setups
• Through-spindle and DIN flange dual coolant delivery for effective chip clearance
• 0.0002-inch TIR for high concentricity and consistent surface finish
• 1/2-20 lock screw thread for secure shell mill retention
• Accepts shell mills in the 2-1/4 to 2-3/4 inch cutting diameter range

Compatibility

Designed for use with CAT50 spindle machining centers and shell mill bodies with a 1-inch pilot bore and 1/2-20 lock screw interface, covering cutting diameters from 2-1/4 to 2-3/4 inches.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician with the spindle fully powered down and locked out per facility LOTO procedures. Clean all mating tapered surfaces before seating the holder to ensure full contact and accurate TIR. Use the specified 1/2-20 lock screw when mounting the shell mill body, and verify runout with a dial indicator before production cuts. Follow machine tool manufacturer guidelines for drawbar torque and clamping force on CAT50 holders.