Accupro 775140 CAT50 End Mill Holder 1 in Bore Through Coolant

Product Description

The ACCUPRO 775140 is a CAT50 taper shank end mill holder engineered for precision milling applications on CNC machining centers. The holder features a 1-inch bore diameter and a 2-inch projection, with a nose diameter of 2-23/64 inches. Through-spindle and DIN flange coolant delivery is supported, directing coolant directly to the cutting zone for improved chip evacuation and tool life. The holder is balanced to 25,000 RPM and holds a total indicator reading (TIR) of 0.0002 inches, making it suitable for high-speed finishing and semi-finishing operations. It weighs 1 pound.

This end mill holder is used in CNC vertical and horizontal machining centers equipped with CAT50 spindles. Typical applications include face milling, shoulder milling, and slot milling in production and job-shop environments. The through-coolant design suits materials that generate significant heat during cutting, such as steel, stainless, and titanium alloys. It is installed and serviced by CNC machinists and toolroom technicians.

Key Features

• CAT50 taper shank for secure, repeatable spindle engagement on compatible machining centers
• 1-inch bore diameter with 2-inch projection for toolholder reach and clearance flexibility
• Through-spindle and DIN flange coolant delivery for direct coolant flow to the cutting edge
• TIR of 0.0002 inches for high-precision, low-runout tool clamping
• Balanced to 25,000 RPM for stable high-speed milling operations
• Nose diameter of 2-23/64 inches for broad clamping surface support

Compatibility

Designed for use with CNC machining centers equipped with CAT50 taper spindles and compatible with through-spindle and DIN flange coolant systems.

Installation Notes

Installation and tool changes should be performed by a qualified CNC machinist or toolroom technician with the machine powered down and the spindle fully stopped. Use a calibrated torque wrench and the manufacturer-specified retention knob for the CAT50 interface. Verify TIR with a dial test indicator after clamping before returning the spindle to service. Confirm that the machine coolant system pressure is compatible with through-spindle delivery before activating coolant flow.