Value Collection 204-2040 ER20 Collet 0.5 Inch

Product Description

The VALUE COLLECTION 204-2040 is an ER20 series collet sized at 0.5 inches, designed for use in CNC machining centers, milling machines, and other rotating spindle equipment that accept the ER20 collet system. This collet holds a 1/2-inch shank tool with a total indicator runout (TIR) of 0.0005 inches, providing the concentricity required for precise cutting, drilling, and reaming operations. At 0.127 pounds, it is a lightweight, direct-fit toolholding component. Machinists, tool-and-die technicians, and CNC operators install this collet as part of standard toolholding setup or replacement procedures.

This collet is suited for use in machine shops, production environments, and toolroom applications where ER20-compatible spindles or collet chucks are in service. It accepts 1/2-inch round shank cutting tools and is appropriate for both light-duty and moderate material-removal operations. Its 0.0005-inch TIR rating makes it a reliable choice where tool concentricity directly affects finished-part accuracy.

Key Features

• ER20 collet series — fits standard ER20 collet chucks and spindle holders
• 0.5-inch (1/2-inch) collet size for direct toolshank fitment
• 0.0005-inch TIR for accurate, low-runout tool rotation
• Lightweight at 0.127 pounds for minimal spindle load contribution
• Single-piece package quantity — sold individually for targeted replacement or fleet expansion

Compatibility

Designed for use with ER20-compatible collet chucks and tool holders that accept 0.5-inch collets. Consult your spindle or chuck manufacturer specifications to confirm ER20 collet fitment before installation.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine spindle before seating or removing any collet. Use the appropriate ER20 collet nut and spanner wrench rated for the chuck; do not overtighten by impact methods. Inspect the collet bore and chuck taper for debris or wear before each installation to maintain rated TIR performance.