Value Collection 204-2522 ER25 Collet 0.3437 in

Product Description

The VALUE COLLECTION 204-2522 is an ER25 series collet designed to hold round workpieces and cutting tools with a 0.3437 inch (11/32 inch) bore diameter. It delivers a total indicated runout (TIR) of 0.0005 inches, supporting precise concentricity during milling, drilling, and tapping operations. ER25 collets are a standard clamping component used in CNC machining centers, manual mills, and dedicated collet chuck holders. Machinists and toolroom technicians install these collets to secure end mills, drills, reamers, and taps for accurate metal removal.

This collet is suited for machine shops, production facilities, and toolrooms running ER25-compatible spindles or collet chuck holders. The 11/32 inch bore size accommodates tool shanks and workpiece stock at that diameter. It is appropriate for both light-duty and general-purpose cutting operations where consistent runout control is required. The ER25 series is widely used in both CNC and manual machining environments across job shop and production settings.

Key Features

• 0.3437 inch (11/32 inch) bore diameter for precise tool or workpiece clamping
• 0.0005 inch TIR for tight concentricity tolerances during cutting operations
• ER25 collet series — fits standard ER25-compatible collet chuck holders
• Single-piece collet construction for direct spindle or chuck installation
• Lightweight at 0.09 pounds — easy to handle and store in tool crib environments

Compatibility

Designed as a standard ER25 series collet for use with ER25-compatible collet chuck holders and spindle tooling systems. Specific machine compatibility depends on the chuck or holder accepting the ER25 collet standard.

Installation Notes

ER25 collets are installed by machinists and toolroom technicians using the appropriate ER25 collet nut and chuck body. Always de-energize and lock out the machine spindle before inserting or removing a collet. Seat the collet fully into the collet nut before threading onto the chuck body to avoid cross-threading or uneven clamping. Inspect the collet bore and chuck taper for chips or debris prior to installation to maintain runout specifications.