Accupro 776954 CAT40 Single Angle Collet Chuck 6 in

Product Description

The ACCUPRO 776954 is a single angle collet chuck with a CAT40 taper shank, designed for precision tool holding on CNC machining centers. It accepts TG and PG150 series collets and provides a 6-inch projection from the spindle face, making it well suited for deep-cavity work and tall-fixture setups. Drawbar actuation locks the collet securely, and through-spindle coolant delivery is supported via a DIN flange connection. The chuck is balanced to 20,000 RPM and holds a total indicator runout (TIR) of 0.0002 inches, keeping toolpath accuracy consistent at high spindle speeds. Installation and use are typical for licensed machinists and CNC setup technicians in production and job-shop environments.

This collet chuck is used on vertical and horizontal machining centers equipped with CAT40 spindles. The 6-inch projection suits applications where standard-length holders cannot reach the workpiece due to fixture height or part geometry. Collet capacity ranges from 1/2 inch minimum to 1-1/2 inch maximum, covering a broad selection of end mills, drills, reamers, and other round-shank tooling. Through-coolant capability supports high-pressure coolant delivery directly to the cutting zone, reducing heat and extending tool life in demanding metal-cutting operations.

Key Features

• CAT40 taper shank for direct mounting to standard CAT40 spindles without adapters
• TG and PG150 collet series compatibility with 1/2 inch to 1-1/2 inch capacity range
• 6-inch projection for deep-reach and tall-fixture machining setups
• 0.0002 inch TIR for high-accuracy tool positioning and consistent surface finish
• Balanced to 20,000 RPM for stable high-speed spindle operation
• Through-spindle and DIN flange coolant delivery for direct cutting-zone coolant flow

Compatibility

Designed for use with CAT40 spindle machining centers using TG and PG150 series single angle collets with drawbar actuation.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and the machine is in an e-stop or lockout-tagout state before mounting or removing the chuck. Inspect the taper shank and spindle bore for chips, burrs, or contamination before seating the chuck, as any debris will affect runout and balance. Torque the drawbar to the machine manufacturer's specification and verify through-coolant port alignment before resuming production.