Parlec ER20-0354 ER20 Collet 0.3543 Inch 9.00mm

Product Description

The PARLEC ER20-0354 is an ER20 series collet designed for use in ER20-compatible collet chucks on CNC machining centers, milling machines, and drilling equipment. It holds workpieces or cutting tools with a nominal collet size of 0.3543 inches (9.00mm) and a minimum collet capacity of 0.315 inches (8.0mm), providing a clamping range suited to a variety of small-diameter tooling. The overall length measures 1.24 inches. Machinists and tooling specialists install this collet as part of a precision workholding setup where repeatable runout control and secure tool retention are required.

This collet is used in machine shops and manufacturing environments running ER20 collet chuck systems. It suits both production and job-shop applications where small-diameter end mills, drills, reamers, or other round-shank tooling need to be held securely. The ER20 series is a widely adopted standard, making this collet a common replacement or supplemental tooling item for shops maintaining a range of collet sizes.

Key Features

• ER20 series collet compatible with ER20 collet chucks
• Nominal collet size of 0.3543 inches (9.00mm)
• Minimum collet capacity of 0.315 inches (8.0mm), providing a defined clamping range
• Overall length of 1.24 inches for use in standard ER20 chuck bodies
• Single-piece packaging for individual replacement or tooling inventory builds

Compatibility

Designed for use with ER20-compatible collet chucks. Specific chuck and machine compatibility depends on the chuck manufacturer and spindle interface in use. Verify ER20 chuck acceptance before installation.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Ensure the spindle and collet chuck are fully de-energized and the machine is in a safe, locked-out state before handling tooling. Clean the collet seat and chuck bore before seating the collet to prevent runout caused by debris. Do not exceed the rated clamping range of the collet when selecting tool shank diameters.