Parlec ER20-0218 ER20 Collet 0.218 in Capacity

Product Description

The PARLEC ER20-0218 is an ER20-series collet designed for use in CNC machining centers, milling machines, and other spindle toolholding applications. It accepts a maximum tool shank diameter of 0.218 inches and a minimum collet capacity of 0.179 inches, covering a practical clamping range for small-diameter end mills, drills, and reamers. Overall length is 1.24 inches with an overall diameter of 0.827 inches. Machinists and toolroom technicians install this collet into compatible ER20 collet chucks or collet holders to achieve accurate, repeatable tool runout in precision cutting operations.

This collet is suited for light to medium-duty machining applications where ER20 toolholding is standard. Typical use cases include production milling, drilling, and reaming in both manual and CNC environments. The 0.218-inch capacity makes it well matched to fractional and wire-gauge tooling commonly used in general machining and toolroom work. Its compact overall length of 1.24 inches fits standard ER20 collet nut and chuck assemblies found across a wide range of machine spindles.

Key Features

• ER20 collet series for broad compatibility with ER20 chucks and holders
• 0.218-inch maximum collet capacity with a 0.179-inch minimum clamping range
• 1.24-inch overall length fits standard ER20 collet nut assemblies
• 0.827-inch overall diameter sized to ER20 collet chuck bore specifications
• Lightweight at 0.1 pounds for easy handling and quick tool changes

Compatibility

Designed as a direct-fit replacement or spare collet for use in ER20-series collet chucks and toolholding systems accepting the ER20 collet standard.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before inserting or removing the collet. Seat the collet fully into the collet nut before threading the assembly onto the chuck body, and torque the collet nut using an appropriate ER collet wrench to manufacturer specification. Inspect the collet bore and seating surfaces for chips or wear before each use to maintain runout accuracy.