Accupro 775706 ER40 Collet Chuck CAT50 Taper Shank

Product Description

The ACCUPRO 775706 is an ER40 collet chuck with a CAT50 taper shank, designed for high-precision machining operations on CNC machining centers. It accepts ER40 collets with a clamping range of 0.118 to 1.181 inches and delivers a true indicator reading (TIR) of 0.0002 inches, making it suitable for tight-tolerance work. The chuck is balanced to 25,000 RPM, supporting high-speed cutting applications. Through-coolant capability, including through-spindle and DIN flange coolant delivery, allows for efficient chip evacuation and tool cooling during demanding cuts. Machinists and CNC setup technicians install this chuck as a standard toolholding solution on CAT50-spindle machines.

This collet chuck is intended for use on CNC machining centers equipped with CAT50 spindle interfaces. The 6-inch projection provides clearance for deep-cavity work and fixturing situations where additional reach is required. The ER40 collet system is widely used in production and job-shop environments for milling, drilling, reaming, and tapping operations where runout control and spindle speed are critical factors.

Key Features

• ER40 collet system accepts tooling from 0.118 to 1.181 inches in diameter
• CAT50 taper shank for direct mounting to CAT50 CNC spindles
• TIR of 0.0002 inches for high-precision, low-runout toolholding
• Balanced to 25,000 RPM for high-speed machining applications
• Through-coolant compatible via through-spindle and DIN flange coolant delivery
• 6-inch projection for extended reach in deep-cavity or complex fixturing setups

Compatibility

Designed for CNC machining centers with CAT50 spindle interfaces using the ER40 collet system.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolroom technician. The machine spindle must be powered down and brought to a full stop before mounting or removing the chuck. Use a calibrated torque wrench and the appropriate ER40 collet nut spanner to seat the collet nut properly — do not use impact tools on the collet nut. Verify TIR with a dial indicator after installation before beginning any cutting operation.