Parlec ER20-0500 ER20 Collet 1/2 Inch

Product Description

The PARLEC ER20-0500 is an ER20-series precision collet designed for use in CNC machining centers, milling machines, and collet chuck toolholding systems. It accepts a nominal 0.5 inch (1/2 inch) shank diameter with a minimum collet capacity of 0.461 inches, providing a controlled clamping range suited to close-tolerance work. The collet measures 1.24 inches in overall length and 0.827 inches in overall diameter. Machinists and tool crib personnel working with ER20-compatible toolholders will find this collet a direct-fit solution for standard round-shank tooling and workholding applications.

This collet is intended for use in ER20-standard collet chucks found in light-duty to medium-duty machining environments. Typical applications include end mill holding, drill chuck replacement setups, tapping attachments, and CNC turning or milling operations where an ER20 system is already in place. The compact overall length suits toolholders with limited gage-length clearance.

Key Features

• ER20 collet series for use with ER20-compatible toolholders and collet chucks
• 0.5 inch nominal collet size with a minimum capacity of 0.461 inches
• 1.24 inch overall length for compact toolholder fitment
• 0.827 inch overall diameter consistent with ER20 series standards
• Lightweight at 0.1 pounds for easy handling and low spindle mass contribution

Compatibility

Designed as an OEM-style replacement or supplemental collet for ER20-standard collet chuck systems used in CNC milling, drilling, and tapping applications.

Installation Notes

Installation is performed by a machinist or tool crib technician. Ensure the spindle or toolholder is fully de-energized and at rest before changing collets. Seat the collet fully into the nut before threading onto the chuck body to prevent damage to the collet taper. Torque the collet nut using the appropriate ER20 spanner wrench; do not use improvised tools that may distort the nut or collet flange.