Techniks 04220-01 ER20 Collet 1.24 Inch Overall Length

Product Description

The TECHNIKS 04220-01 is an ER20 precision collet designed for use in CNC machining centers, milling machines, lathes, and other rotating toolholding applications. With an overall length of 1.24 inches and a Total Indicator Runout (TIR) of 0.0002 inches, this collet delivers the close tolerances required for accurate material removal and consistent tool life. It weighs 0.5 pounds and is built for the demands of production and job-shop environments. Machinists and tooling technicians install ER20 collets as standard toolholding components across a wide range of spindle setups.

The 04220-01 is suited for use in any ER20-compatible collet chuck or toolholder found in typical machine shop environments. ER20 collets are a widely adopted standard in both manual and CNC applications, making this collet a common replacement or additional-inventory item for shops running ER20 toolholding systems. It is appropriate for light to medium-duty cutting operations where precision runout control is a priority.

Key Features

• ER20 collet series for broad compatibility with ER20 chucks and toolholders
• 1.24 inch overall length fits standard ER20 collet chuck depths
• TIR of 0.0002 inches supports high-precision machining applications
• Lightweight at 0.5 pounds for easy handling during tool changes
• Designed for consistent clamping force and repeatable tool positioning

Compatibility

Designed as an OEM-style replacement or standard component for use with ER20-series collet chucks and toolholders.

Installation Notes

ER20 collets are installed by tooling technicians and machinists. Before installing or changing collets, power down and lock out the machine spindle per standard lockout/tagout procedures. Seat the collet fully into the ER20 chuck nut before threading onto the toolholder body, and tighten with the appropriate ER collet wrench to the chuck manufacturer's specified procedure. Inspect the collet bore and seating surfaces for chips or damage before each use to maintain runout specifications.