Value Collection 204-2506 ER25 Collet 0.0937 in

Product Description

The VALUE COLLECTION 204-2506 is an ER25 series collet designed for use in CNC machining centers, milling machines, and other rotating spindle tooling systems. It accepts a 0.0937 inch (3/32 inch) shank diameter tool and holds a total indicator runout (TIR) of 0.0005 inches, making it suitable for precision toolholding applications where concentricity and repeatability matter. Machinists, toolroom technicians, and CNC operators install this collet as part of an ER25 collet chuck assembly to secure cutting tools, drills, and end mills during machining operations.

This ER25 collet is used in general metalworking, woodworking, and light production machining environments. It fits any ER25-compatible collet chuck, which is one of the most widely used collet standards in CNC and manual machining. The 3/32 inch bore size targets smaller-diameter tooling commonly used in engraving, PCB drilling, and fine detail milling work. Sold individually, it is a direct replacement or addition to an existing ER25 collet set.

Key Features

• ER25 collet series — compatible with standard ER25 collet chucks
• 0.0937 inch (3/32 inch) bore diameter for small-shank tooling
• 0.0005 inch TIR for precise concentricity in rotating applications
• Lightweight at 0.11 pounds — minimal mass addition to spindle assembly
• Sold as a single unit (package quantity of 1)

Compatibility

Designed for use with any ER25-standard collet chuck. Fits CNC machining centers, manual milling machines, lathes, and rotary spindle systems configured for the ER25 collet series.

Installation Notes

Installation is performed by qualified machinists or CNC technicians. Before installing or removing a collet, power down the spindle completely and confirm the machine is in a locked-out, de-energized state per your facility lockout/tagout procedure. Insert the collet into the ER25 chuck nut before threading onto the spindle — do not insert the collet directly into the chuck body without the nut. Tighten the collet nut with the appropriate ER25 spanner wrench to the chuck manufacturer's specified torque; do not over-tighten by hand or with improvised tools, as this can damage the collet taper or reduce TIR accuracy.