Accupro 777666 CAT50 Milling Chuck 1 in Through Coolant

Product Description

The ACCUPRO 777666 is a CAT50 taper-shank milling chuck designed for precision tool holding in CNC machining centers. It features a 1-inch hole diameter and a total runout (TIR) of 0.0002 inches, making it suitable for demanding milling operations where concentricity is critical. The chuck is balanced to 10,000 RPM and supports through-spindle and DIN flange coolant delivery, keeping cutting zones clear during high-speed material removal. With an overall length of 8.14 inches and a projection of 4.14 inches, it provides sufficient reach for a wide range of milling setups. Licensed machinists and CNC tool-crib technicians are the primary installers.

This chuck is intended for use in CNC vertical and horizontal machining centers equipped with CAT50 spindle tapers. It is well suited for production milling environments where consistent tool runout and high-speed performance are required. The through-coolant capability makes it a practical choice for deep-cavity milling, long-reach endmill work, and applications involving difficult-to-machine materials where flood coolant alone is insufficient. The clamping depth of 3.15 inches accommodates standard straight-shank endmills and milling tools within the 1-inch bore range.

Key Features

• CAT50 taper shank for direct spindle mounting in compatible CNC machining centers
• 1-inch bore diameter with 3.15-inch clamping depth for secure straight-shank tool retention
• TIR of 0.0002 inches (0.005 mm) for high-precision concentricity
• Balanced to 10,000 RPM for stable high-speed milling operations
• Through-spindle and DIN flange coolant delivery for effective chip and heat management
• 2.41-inch nose diameter and 3.875-inch flange diameter for rigid tool support

Compatibility

Designed as a direct-mount tool holder for CNC machining centers with CAT50 spindle tapers. No specific compatible model numbers were provided in the product data.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Power down and lock out the machining center spindle before inserting or removing the chuck. Use the appropriate CAT50 pull stud and drawbar torque specifications as defined by the machine tool manufacturer. Inspect the spindle taper and chuck taper surfaces for contamination or damage before seating the holder.