ER20 Collet 0.3125 to 0.2725 Inch Range for CNC Machining, Ultra Tight Runout under 0.0004 in, Flexible Toolholding for All Shank Types, Superior Vibration Dampening for Longer Tool Life and Smoother Surface Finishes

ER20 Collet for CNC Milling: Tight Runout, Versatile Shanks
✔️ Clamping range.3125-.2725 in; Runout TIR <.0004 in

The ER20 collet uses the classic ER clamping system, a Swiss-made standard that fits the DIN 6499. It is widely used in automotive, aerospace, medical, engineering, watchmaking, telecommunications and in the die and mold industries for safe, accurate toolholding.

✅ Clamping range:.3125-.2725 in
✅ Runout TIR <.0004 in
✅ Safe and accurate toolholding for all shank types and materials
✅ High vibration-dampening improves tool life and surface finish

💡 What is an ER20 collet used for in CNC machining?

This handy clamping device securely holds tool shanks in a variety of setups. - secure toolholding for various shank types in CNC milling
- reduces runout to improve tool life and surface finish
- DIN 6499 ER clamping system widely used in automotive and aerospace tooling
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