Kennametal 2269969 ER20 Collet Set 8 Piece

Product Description

The KENNAMETAL 2269969 is an 8-piece ER20 collet set covering a clamping range of 0.0625 inches through 0.5000 inches in 1/16-inch increments. Each collet conforms to the ER20 standard, making the set a direct fit for any ER20-compatible collet chuck on CNC machining centers, manual mills, routers, and drill presses. The set delivers consistent runout control and secure tool holding across the full range of included sizes. Machinists and toolroom technicians reach for this set when equipping a spindle for general-purpose milling, drilling, or reaming work where multiple shank diameters must be accommodated without purchasing individual collets.

This collet set is suited for production and job-shop environments where ER20-series toolholding is the standard. The eight collets span the most commonly used inch fractional sizes, making the set practical for shops running a mix of end mills, drills, and reamers with shanks from 1/16 inch through 1/2 inch. It is appropriate for both light-duty and medium-duty cutting applications in ferrous and non-ferrous materials. The set ships as a single package unit and is ready for immediate installation into any ER20 collet chuck.

Key Features

• 8-piece set covers 1/16 inch through 1/2 inch in 1/16-inch increments
• ER20 collet system — fits any ER20-compatible collet chuck
• Fractional inch sizes included: 1/16, 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2 inch
• Single-package quantity for convenient stocking and kitting
• Replaces the need to source individual ER20 collets across the common inch range

Compatibility

Designed as a direct-fit replacement and retrofit set for ER20-series collet chucks used in CNC and manual machine tool spindles that accept the ER20 collet standard.

Installation Notes

ER20 collets are installed and removed by a qualified machinist or toolroom technician. Always power down and lock out the machine spindle before changing collets. Ensure the collet bore and chuck taper are clean and free of chips or coolant residue before seating the collet. Use the correct ER20 spanner wrench and collet nut when torquing to the chuck manufacturer's specification — do not use substitute tools that can damage the collet nut or taper.