Accupro 775466 Shell Mill Holder CAT50 Taper Shank

Product Description

The ACCUPRO 775466 is a CAT50 taper shank shell mill holder designed for use on CNC machining centers equipped with CAT50 spindles. It features through-spindle and DIN flange coolant delivery, directing coolant directly to the cutting zone for improved tool life and chip evacuation. The holder accepts shell mills with a 1.5-inch pilot diameter and accommodates cutting diameters ranging from 4 to 5 inches. A total indicator runout (TIR) of 0.0002 inches ensures precise concentricity, making it suitable for face milling and shoulder milling applications where accuracy and surface finish matter. Licensed machinists and CNC setup technicians are the primary installers of this toolholder.

This shell mill holder is intended for use on vertical and horizontal CNC machining centers with CAT50 spindle interfaces. It is well suited for production and job shop environments requiring reliable, repeatable face milling of large workpiece surfaces. The through-spindle and DIN flange dual coolant path supports high-pressure coolant systems commonly found on modern machining centers. The 3/4-16 lock screw thread secures the shell mill firmly during heavy cutting operations.

Key Features

• CAT50 taper shank for direct spindle mounting on CAT50-equipped machining centers
• Through-spindle and DIN flange dual coolant delivery for efficient chip clearing and tool cooling
• 1.5-inch pilot diameter accommodates shell mills in the 4 to 5-inch cutting diameter range
• TIR of 0.0002 inches for tight concentricity and consistent surface finish
• 3/4-16 lock screw thread provides secure shell mill retention under heavy cuts
• Projection from flange to nose end of 4 inches for clearance in typical setup configurations

Compatibility

Designed as an OEM-style replacement and standard fitment for CAT50 spindle machining centers accepting shell mills with a 1.5-inch pilot diameter and cutting diameter range of 4 to 5 inches.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. Power down and lock out the machining center before mounting or removing the toolholder from the spindle. Ensure the spindle taper and holder taper are clean and free of chips or debris before seating to maintain TIR specification. Follow the machine tool manufacturer guidelines for drawbar torque and retention knob specifications.