Parlec 5UMER25-0500 ER25 Collet 0.5 Inch

Product Description

The PARLEC 5UMER25-0500 is an ER25 series collet sized for 0.5 inch tool shanks. It is used in ER25-compatible collet chucks mounted in CNC machining centers, manual mills, and drill presses. The collet delivers a Total Indicator Runout (TIR) of 0.0002 inches, supporting precise concentricity for drilling, reaming, and end-milling operations. Overall length is 1.338 inches and overall diameter is 1.023 inches. Weight is 0.25 pounds. Machinists and CNC setup technicians are the primary installers of this component in production and job-shop environments.

This collet is suited for light to medium material removal operations where toolholder concentricity directly affects finished part accuracy. Typical applications include milling, drilling, and tapping with 1/2 inch shank cutting tools in both ferrous and non-ferrous materials. The ER25 series is a widely adopted standard in precision toolholding across vertical and horizontal machining center setups in both small-shop and production-floor environments.

Key Features

• ER25 collet series for use with ER25 collet chucks
• 0.5 inch (1/2 inch) nominal collet size with a minimum collet capacity of 0.451 inches
• 0.0002 inch TIR for high concentricity in precision cutting operations
• 1.338 inch overall length and 1.023 inch overall diameter
• Lightweight at 0.25 pounds for easy handling during toolchanges

Compatibility

Designed as an OEM-style replacement or standard fitment collet for ER25 collet chucks accepting 0.5 inch shank tooling.

Installation Notes

Installation is performed by machinists or CNC setup technicians. Always verify the collet chuck is fully de-energized and the spindle is locked or at rest before inserting or removing collets. Seat the collet fully into the collet nut before threading the nut onto the chuck body to avoid damage to the collet taper. Follow machine tool manufacturer torque specifications for the collet nut using an appropriate ER spanner wrench.