Iscar 4500231 ER32 Collet 0.5 Inch 0.0004 Inch Tir

Product Description

The ISCAR 4500231 is an ER32 series collet with a 0.5-inch clamping diameter and a total indicator runout (TIR) of 0.0004 inches. ER collets are precision workholding components used in CNC machining centers, milling machines, lathes, and drilling equipment. They seat inside a matching ER32 collet chuck and clamp tooling or workpieces concentrically when a locknut is torqued against the chuck body. The 0.0004-inch TIR rating reflects the maximum allowable runout deviation, making this collet suitable for operations where concentricity and surface finish are critical. Machinists, toolroom technicians, and CNC operators are the typical end users for this type of component.

This collet is sized for 0.5-inch shank tooling, including end mills, drill bits, reamers, and taps with a 1/2-inch shank. It is designed for use in any ER32-compatible collet chuck across a wide range of machine tool setups, from general-purpose job-shop milling to precision boring and reaming operations. The ER32 collet series is one of the most widely adopted standards in CNC and manual machining environments, supporting both light and moderate cutting loads.

Key Features

• ER32 collet series — fits any ER32-compatible collet chuck
• 0.5-inch clamping diameter accepts standard 1/2-inch shank tooling
• 0.0004-inch TIR for consistent concentricity during cutting operations
• Single-piece package quantity — sold individually
• UNSPSC Code 27112800 for procurement and cataloging compliance

Compatibility

Designed as a direct-fit replacement for ER32-standard collet chucks accepting 0.5-inch diameter tooling shanks. Specific chuck brand or model compatibility was not stated in the product data.

Installation Notes

Installation is performed by a machinist or toolroom technician. Before seating the collet, confirm the chuck bore and locknut are clean and free of chips or debris, as contamination directly affects runout. Insert the collet into the chuck bore before placing the tooling shank — never snap the collet onto the locknut with tooling already inserted, as this can damage the collet slots. Use a calibrated torque wrench and the chuck manufacturer's specified locknut torque range to achieve proper clamping force without distorting the collet.