Kennametal 1021460 ER08 Collet Chuck Straight Shank

Product Description

The KENNAMETAL 1021460 is an ER08 collet chuck designed for precision CNC machining applications requiring tight tolerances and through-spindle coolant delivery. Built on the ER collet system with a straight shank, it accepts collets ranging from 0.51 mm (0.020 inches) to 5.08 mm (0.200 inches) capacity. The chuck holds a maximum total indicator runout (TIR) of 0.0025 mm (0.0001 inches), making it suitable for drilling, reaming, and milling operations where concentricity is critical. Overall length is 5 inches with a projection of 0.85 inches. The unit is balanced to 8,000 RPM and actuated with a wrench.

This collet chuck is intended for use in machining centers and CNC mills where small-diameter tooling must be held with high repeatability. The ER08 series is a compact collet system suited to light drilling and precision finishing work with tooling in the sub-quarter-inch diameter range. Through-spindle coolant delivery channels cutting fluid directly to the tool tip, supporting extended tool life in demanding materials. Installation is performed by toolroom technicians or CNC setup personnel.

Key Features

• ER08 collet system with straight shank for standard CNC machine compatibility
• Capacity range: 0.51 mm to 5.08 mm (0.020 to 0.200 inches)
• TIR of 0.0025 mm (0.0001 inches) for high-precision concentricity
• Through-spindle coolant design directs coolant to the cutting zone
• Balanced to 8,000 RPM for stable high-speed operation
• Wrench-actuated collet nut with 0.472 inch diameter for controlled clamping

Compatibility

Designed for use with ER08 series collets in CNC machining centers and mills equipped with a 3/8 inch straight shank toolholder interface.

Installation Notes

Installation and tool changes should be performed by qualified toolroom or CNC setup personnel with the machine in a full stop and locked-out state per applicable lockout/tagout procedures. Use the correct ER08 collet nut wrench to achieve proper clamping torque without over-tightening the collet nut. Verify through-coolant fittings and spindle coolant passages are clear and compatible with the machine spindle before use. Confirm balanced RPM rating does not exceed the machine spindle specification before operation.