Accupro 587338 ER25 Collet 0.236 Inch 6.00mm

Product Description

The ACCUPRO 587338 is an ER25 series collet designed for precision CNC machining and toolholding applications. It accepts a nominal shank diameter of 0.236 inches (6.00mm) with a minimum collet capacity of 0.196 inches (5.0mm), giving it a 0.040-inch clamping range. The collet holds a Total Indicator Runout (TIR) of 0.01mm, making it suitable for applications where tool concentricity directly affects surface finish and dimensional accuracy. Machinists and toolroom technicians install this collet into compatible ER25 collet chucks on milling machines, lathes, and machining centers.

This collet is used in both production and job-shop environments wherever an ER25 collet chuck is mounted. Typical applications include end milling, drilling, reaming, and tapping with 6.00mm shank tooling. The ER25 series is one of the most widely used collet standards in the industry, found on CNC machining centers and manual machines alike. It is sold individually and is appropriate for any shop maintaining a full set of ER25 collets across common metric and inch shank sizes.

Key Features

• ER25 collet series for use with standard ER25 collet chucks and nuts
• Nominal clamping diameter of 0.236 inches (6.00mm)
• Minimum collet capacity of 0.196 inches (5.0mm) for reduced-shank tooling
• 0.01mm TIR for high concentricity and consistent tool runout control
• Sold individually, MOQ of 1 unit

Compatibility

Designed for use with standard ER25 collet chucks and matching ER25 clamping nuts. Compatible with any machine spindle or toolholder built to the ER25 collet standard.

Installation Notes

Installation is performed by a machinist or toolroom technician. The collet must be seated into the ER25 collet chuck by hand before engaging the clamping nut — never tighten the nut onto a collet that is not properly seated in the chuck bore. Use an appropriate ER25 spanner wrench or torque wrench with the correct collet nut socket to achieve proper clamping force. Inspect the collet bore and chuck taper for chips or contamination before assembly, as debris will directly increase runout beyond the rated TIR.