Parlec EROS20-1/2 ER20 Collet 0.5 Inch

Product Description

The PARLEC EROS20-1/2 is an ER20 series collet with a 0.5-inch clamping capacity, designed for use in CNC machining centers, milling machines, and other rotating spindle equipment that accept the ER20 collet standard. Collets of this type grip cutting tools and workholding shanks concentrically, transmitting torque from the spindle to the tool. The ER20 series is one of the most widely used collet standards in precision machining, and this collet is sized specifically for 0.5-inch shank tooling. Installation is performed by machinists and toolroom technicians.

This collet is suited for use in ER20-compatible collet chucks mounted in CNC machining centers, knee mills, drill-tap centers, and manual milling machines. It accepts tool shanks with a minimum and maximum capacity of 0.5 inches, making it a single-size collet for that specific shank diameter. Typical applications include end mills, drills, reamers, and taps with 0.5-inch shanks in both production and job-shop environments.

Key Features

• ER20 collet series - widely compatible with ER20 collet chuck systems
• 0.5-inch clamping capacity for standard 1/2-inch shank tooling
• Precision-ground bore for concentric tool grip and reduced runout
• Compact ER20 envelope suits smaller spindle applications
• Lightweight at 0.1 pounds for easy handling during tool changes

Compatibility

Designed as a direct-fit replacement or spare for any ER20-standard collet chuck system accepting ER20 collets with a 0.5-inch bore capacity.

Installation Notes

Installation is performed by a machinist or toolroom technician. Always power down and lock out the spindle before changing collets. Seat the collet fully in the chuck nut before inserting the tool shank, and torque the nut to the chuck manufacturer's specification using an appropriate ER collet wrench. Inspect the collet bore and seating taper for chips or damage before each use to maintain concentricity and safe clamping force.