Accupro 775448 Shell Mill Holder CAT50 1 Inch Pilot

Product Description

The ACCUPRO 775448 is a CAT50 taper shank shell mill holder designed for use on machining centers equipped with CAT50 spindles. It features a 1-inch pilot diameter and a 1.75-inch projection from flange to nose end, providing a stable, rigid platform for face milling and shell milling operations. Through-spindle and DIN flange coolant delivery is supported, directing coolant directly to the cutting zone for improved tool life and chip evacuation. The lock screw uses a 1/2-20 thread, and the holder achieves a total indicator runout (TIR) of 0.0002 inches for precise cutter seating. Machining center operators and CNC toolroom technicians are the primary users of this holder.

This holder is suited for horizontal and vertical machining centers running shell mills in the 2-1/4 to 2-3/4 inch cutting diameter range. It is appropriate for production milling applications in metalworking environments where through-spindle coolant is available. The DIN flange coolant compatibility makes it a practical choice for shops running high-pressure coolant systems targeting face mill insert life and surface finish consistency.

Key Features

• CAT50 taper shank for use on standard CAT50 spindle machining centers
• 1-inch pilot diameter accepts shell mills in the 2-1/4 to 2-3/4 inch cutting diameter range
• 1.75-inch flange-to-nose projection for clearance in typical face milling setups
• Through-spindle and DIN flange coolant delivery for direct cutting zone coverage
• TIR of 0.0002 inches for accurate cutter positioning and reduced runout
• 1/2-20 lock screw thread for secure shell mill retention

Compatibility

Designed as a standard CAT50 taper shank shell mill holder compatible with machining centers using CAT50 spindle interfaces and shell mills within the 2-1/4 to 2-3/4 inch cutting diameter range.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machining center spindle before mounting or removing the holder. Use the appropriate CAT50 retention knob and drawbar torque procedure specified by the machine tool manufacturer. Verify TIR at setup with a dial test indicator before committing to production cuts.