ER11 Spring Collet Chuck 8mm Precision Router Collets 65Mn Spring Steel for CNC Engraving Milling Lathe Tool Pro Grade Performance High Rigidity Low Runout Industrial Grade Clamping Easy Install and Reliable Grip

ER11 8mm Spring Collet Chuck for CNC Milling
✔️ 8mm range, 11.5mm OD, 18mm length, 65Mn steel, 1pc

This ER11 spring collet chuck securely grips cutting tools to prevent slip and maintain accurate alignment during CNC milling, engraving, and drilling. It’s built for general milling machines and CNC spindle setups where a firm, repeatable tool grip matters.

Model	ER11
Range	8 mm / 0.31"
Outer diameter	11.5 mm / 0.45"
Total length	18 mm / 0.71"

✅ Range: 8mm / 0.31"
✅ Outer diameter: 11.5mm / 0.45"
✅ Total length: 18mm / 0.71"
✅ Material: 65Mn spring steel, hardness up to HRC55
✅ Package: 1 pcs

💡 What is a spring collet chuck used for in CNC milling? This handy tool holds cutting tools with high rigidity and precision. - Provides precise tool clamping to minimize runout during milling, drilling, engraving - Compatible with ER11 tooling and most spindle setups for general machines - Made from 65Mn steel with HRC55 hardness for long-lasting rigidity - Easy install and quick-release grip for repeatable accuracy