Accupro 775062 CAT40 End Mill Holder 1-1/4 in Through Coolant

Product Description

The ACCUPRO 775062 is a CAT40 taper shank end mill holder designed for CNC machining centers requiring precise tool retention and through-coolant capability. The holder accepts a 1-1/4 inch bore and provides a 4 inch projection from the spindle face, giving clearance for a wide range of milling applications. It carries a total indicator runout (TIR) of 0.0002 inch, supporting tight-tolerance work. The drawbar thread is 5/8-11, matching standard CAT40 spindle configurations. Balanced to 30000 RPM, this holder suits high-speed machining environments. Machinists and CNC setup technicians install this holder as part of the tooling assembly on vertical or horizontal machining centers.

This end mill holder is suited for use on CAT40-spindle machining centers in production and job-shop environments. The through-coolant design supports both through-spindle and DIN flange coolant delivery, directing fluid to the cutting zone to improve chip evacuation and extend tool life. The 4 inch projection makes it appropriate for applications where extended reach past a fixture or workpiece feature is needed. The 63.00 mm nose diameter provides a robust clamping interface for 1-1/4 inch shank end mills.

Key Features

• CAT40 taper shank for direct spindle mounting on standard CAT40 machining centers
• 1-1/4 inch bore diameter accepts standard end mill shanks of that size
• 4 inch projection for extended reach applications
• Through-coolant compatible with both through-spindle and DIN flange coolant delivery
• TIR of 0.0002 inch for precise tool concentricity
• Balanced to 30000 RPM for high-speed machining operations

Compatibility

Designed as an OEM-style replacement or standard tooling component for CAT40-spindle CNC machining centers that support through-spindle or DIN flange coolant delivery and use a 5/8-11 drawbar thread.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Power down and lock out the machining center spindle before seating or removing any tool holder. Verify the spindle taper and tool holder taper are clean and free of chips or oil before assembly, as contamination will affect runout. Torque the drawbar to the machining center manufacturer specification — do not use a value not provided by the machine builder.