Accupro 775654 ER25 Collet Chuck CAT40 Taper Shank

Product Description

The ACCUPRO 775654 is an ER25 collet chuck with a CAT40 taper shank, designed for precision tool holding on CNC machining centers. It accepts ER25 collets with a capacity range of 0.039 to 0.629 inches and delivers a total indicator runout (TIR) of 0.0002 inches, making it suitable for tight-tolerance milling, drilling, and reaming operations. The chuck features a 6-inch projection and is balanced to 30,000 RPM for high-speed spindle applications. Licensed machinists and CNC operators install this chuck as part of the tool assembly process on CAT40-spindle machines.

This collet chuck is intended for use on machining centers equipped with a CAT40 spindle interface. The 6-inch projection provides clearance for deep-cavity work or fixtures that require additional reach. Through-spindle and DIN flange coolant delivery is supported, allowing cutting fluid to reach the tool tip directly for improved chip evacuation and tool life in high-production environments. The 1.65-inch collet nut diameter is standard for ER25 tooling systems. This chuck suits both production shops and job shops running high-speed machining cycles.

Key Features

• ER25 collet system with 0.039 to 0.629 inches capacity range
• CAT40 taper shank for compatibility with CAT40-spindle machining centers
• 0.0002 inches TIR for precise, repeatable tool holding
• 6-inch projection for extended reach in deep-cavity applications
• Through-coolant capable via through-spindle and DIN flange coolant types
• Balanced to 30,000 RPM for high-speed machining operations

Compatibility

Designed for use with ER25 collets on machining centers equipped with a CAT40 spindle interface.

Installation Notes

Installation and tool changes should be performed by qualified machinists or CNC technicians. Spindle power must be locked out and the machine brought to a complete stop before mounting or removing the chuck. Use the appropriate ER25 collet nut wrench and spanner to achieve proper clamping torque per the collet manufacturer's guidelines. Inspect the taper shank and spindle bore for contamination or damage before seating the chuck.