Kennametal 1729910 ER32 Collet 0.75 Inch Bore

Product Description

The KENNAMETAL 1729910 is an ER32 series collet sized for a 0.75 inch bore, designed for precision workholding in CNC machining centers, milling machines, and lathes. It delivers a Total Indicator Runout (TIR) of 0.0203 mm (0.0008 inch), making it suitable for applications where concentricity and surface finish are critical. The collet measures 40.01 mm in overall length with an overall diameter of 32.99 mm. It is sized for the widely used ER32 collet chuck standard. Installation and changeout are handled by machinists and CNC setup technicians during tooling setup or routine maintenance operations.

This collet is used in general-purpose and precision machining environments across both production shops and job shops. Typical applications include end milling, drilling, reaming, and tapping operations where a secure, concentric grip on 0.75 inch shank tooling is required. It fits any ER32-compatible collet chuck or toolholder nut conforming to the ER32 standard. Sold individually.

Key Features

• ER32 collet series for broad chuck compatibility
• 0.75 inch (3/4 inch) bore for standard shank tooling
• Low TIR of 0.0203 mm (0.0008 inch) for concentricity-sensitive operations
• 40.01 mm overall length suits standard ER32 chuck depths
• 32.99 mm overall diameter matches ER32 toolholder specs
• Sold as a single unit with no minimum order beyond one piece

Compatibility

Designed as a replacement or spare ER32 collet for any ER32-standard collet chuck or toolholder nut. No specific model compatibility data was provided in the product input beyond the ER32 collet series designation.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Before changing collets, power down the spindle and confirm the machine is fully stopped and locked out per facility lockout/tagout procedures. Inspect the collet and chuck bore for chips, burrs, or wear before seating. Do not overtighten the collet nut without a calibrated collet wrench, as improper torque can damage the collet taper or reduce clamping force.