Accupro 776926 ER25 Collet Chuck Spanner Wrench

Product Description

The ACCUPRO 776926 is a spanner-style collet chuck wrench designed for use with ER25 collet systems on CNC machining centers, manual mills, and lathes. It provides the grip and leverage needed to properly seat and release ER25 collets from their corresponding nuts during tooling changes. Machining professionals and toolroom technicians rely on a dedicated wrench like this to achieve consistent collet engagement without damaging the nut flats or collet body. The wrench weighs 1 pound and is sized specifically for the ER25 collet series, making it a direct-fit accessory for any shop running ER25 toolholders.

This wrench is used wherever ER25 collet chucks are installed or serviced, including production machine shops, job shops, and maintenance toolrooms. It is the correct tool for tightening or loosening the collet nut on ER25 toolholders during routine insert changes, tool presetting, or spindle service. Using the proper spanner wrench helps prevent over-torque and protects the collet nut from rounding or galling during repeated tool changes.

Key Features

• Spanner-type design fits ER25 collet chuck nuts precisely
• Prevents damage to collet nut flats during tightening and release
• Compact, single-piece construction for toolroom and machine-side use
• Lightweight at 1 pound for easy handling during frequent tool changes
• Compatible with the standard ER25 collet series used across common toolholder platforms

Compatibility

Designed as a direct-fit spanner wrench for ER25 series collet chuck nuts used in standard ER25 toolholder applications.

Installation Notes

A licensed machinist or qualified toolroom technician should perform collet changes using this wrench. Always ensure the machine spindle is fully stopped and the control is in an E-stop or safe state before engaging any collet nut. Use the wrench with steady, controlled force to avoid over-torquing the collet nut, which can distort the collet bore or damage the toolholder taper. Do not use extensions or cheater bars on this wrench.