Top Tier ER Collet Chuck Extension Rod With Straight Shank For CNC Milling Made From Hardened Alloy Steel 40CrMnTi To Handle High Speeds Up To 30K RPM And Keep Zero Runout For Perfect Precision Cuts Every Single Time

Alloy Steel ER Collet Ext Rod For CNC Milling Operations
✔️ 30k RPM, Alloy Steel 40CrMnTi, HRC 58-62, 8-25mm Shanks

This extension rod connects collet chucks to your CNC milling machine spindle to reach deep workpieces while maintaining stability during cutting operations.

✅ Support ER8A, ER11A, ER16A, and ER20A collet sizes across multiple shank diameters
✅ Vacuum quenching furnace treatment ensures extended tool shaft life and higher hardness levels
✅ Designed for zero runout precision to achieve perfect cuts deep in cavities without deflection

💡 Why Use High Speed Extension Rods For Precision CNC Machining?
- Helps secure tools firmly during intense high speed operations reducing vibration risk
- Offers improved accuracy for deep cavity milling tasks requiring straight cut paths
- Enables compatibility with various sized collet systems for flexibility