Iscar 4501656 ER32 Collet Chuck CAT40 Taper Shank

Product Description

The ISCAR 4501656 is an ER32 collet chuck designed for use with CAT40 taper shank spindles on CNC machining centers. It accepts ER32 collets with a clamping range of 0.08 to 0.789 inches, providing a broad range of tool holding capacity in a single chuck body. The chuck features a 1.754-inch projection and a nose diameter of 1.575 inches. Total indicator runout (TIR) is rated at 0.0001 inches, making it suitable for precision milling, drilling, and boring operations. Through-coolant capability is supported via both through-spindle and DIN flange coolant delivery.

This collet chuck is intended for use in production and job-shop CNC milling environments requiring reliable tool retention and coolant delivery at the cutting edge. It is balanced to 20,000 RPM, making it appropriate for high-speed machining applications. Installation and tool changes are performed by CNC machine operators and setup technicians. The ER32 collet system is widely used across light to medium-duty machining tasks including end milling, reaming, and tapping.

Key Features

• ER32 collet system with 0.08 to 0.789 inch clamping range
• CAT40 taper shank for direct spindle mounting on compatible machining centers
• TIR of 0.0001 inches for high-precision tool holding
• Through-coolant support via through-spindle and DIN flange delivery
• Balanced to 20,000 RPM for high-speed machining compatibility
• 1.754-inch projection with 1.575-inch nose diameter

Compatibility

Designed for use with ER32 collets in CAT40 taper shank spindle machines. Specific compatible machine models were not provided in the product data.

Installation Notes

Installation is performed by a qualified CNC setup technician or machinist. Power down and lock out the machine spindle before mounting or removing the chuck. Use the appropriate spanner wrenches and torque procedures specified by the machine tool manufacturer when seating the CAT40 taper and tightening the collet nut. Verify TIR with a dial indicator after installation before beginning cutting operations.