Accupro 775642 ER16 Collet Chuck CAT40 Taper Shank

Product Description

The ACCUPRO 775642 is an ER16 collet chuck designed for CNC machining centers using a CAT40 taper shank interface. It accepts ER16 collets with a clamping range of 0.02 to 0.433 inches, making it suitable for a wide variety of end mills, drills, and reamers within that range. The chuck features a 6-inch projection from the gauge line, a total indicator reading (TIR) of 0.0002 inches for high-precision runout control, and full through-coolant capability via through-spindle and DIN flange coolant delivery. It is balanced to 30,000 RPM, supporting high-speed machining applications. Machinists and CNC setup technicians install this chuck in production and toolroom environments where accuracy and coolant management are critical.

This collet chuck is suited for vertical and horizontal machining centers equipped with a CAT40 spindle. The 6-inch projection makes it well-matched for deep-cavity work or applications requiring clearance from the spindle face. Through-coolant support helps maintain tool life and chip evacuation during drilling and milling at elevated feed rates. The ER16 collet system is a widely used standard in production machining, and this chuck supports the full ER16 collet capacity range.

Key Features

• ER16 collet system with 0.02 to 0.433 inch clamping capacity
• CAT40 taper shank for compatibility with standard CAT40 spindles
• 0.0002 inch TIR for high-precision runout performance
• 6-inch projection for extended reach applications
• Through-coolant ready with through-spindle and DIN flange coolant type
• Balanced to 30,000 RPM for high-speed machining
• 1.260 inch collet nut diameter

Compatibility

Designed for use with CAT40 spindle machining centers that accept ER16 collets and support through-spindle coolant delivery.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machining center spindle before mounting or removing the chuck. Use the appropriate CAT40 pull stud and retention knob torqued per the machine tool builder specifications. Inspect the taper shank and spindle bore for contamination or damage before seating the chuck to maintain runout accuracy.