Accupro 775110 CAT50 End Mill Holder 1/2 in Bore Through Coolant

Product Description

The ACCUPRO 775110 is a CAT50 taper shank end mill holder designed for high-performance milling applications in CNC machining centers. It accepts a 1/2 inch bore and delivers a 6 inch projection, making it well suited for extended-reach cutting operations where clearance from the spindle face is required. The holder features through-coolant capability, supporting both through-spindle and DIN flange coolant delivery to direct fluid precisely at the cutting zone. Balanced to 25,000 RPM, it maintains tool stability at elevated spindle speeds. A total indicator runout (TIR) of 0.0002 inch ensures concentricity critical for finish milling and tight-tolerance work.

This end mill holder is intended for use in production and job-shop CNC machining environments running CAT50-spindle vertical or horizontal machining centers. The 6 inch projection suits deep-cavity milling, mold work, and applications where standard-length holders lack reach. It is installed by machinists and CNC tooling technicians as part of a tool assembly prior to loading into the spindle. The 1-8 drawbar thread size is standard for CAT50 tooling systems.

Key Features

• CAT50 taper shank for direct mounting in CAT50 spindle tooling systems
• 1/2 inch bore accommodates standard end mill shank diameter
• 6 inch projection for extended reach in deep-cavity and mold milling
• Through-coolant compatible via through-spindle and DIN flange delivery
• Balanced to 25,000 RPM for stable high-speed operation
• TIR of 0.0002 inch for precise tool concentricity and surface finish quality

Compatibility

Designed as an OEM-style replacement and standard tooling solution for CNC machining centers equipped with CAT50 taper spindles and a 1-8 drawbar thread.

Installation Notes

Installation is performed by a qualified machinist or CNC tooling technician. Power down and lock out the machining center spindle before assembling or removing toolholders. Use a torque wrench and the appropriate CAT50 retention knob to secure the drawbar connection per machine manufacturer specifications. Inspect bore and taper surfaces for contamination or damage before assembly to protect TIR performance.