ER20 Spring Collet Half Inch Chuck For CNC Engraving Lathe And Milling Machines, Precision Ground Tolerances, 0.015mm Runout, Made From 40Cr High Strength Steel, Ideal For Machining Centers And High Speed Milling, 2 Pack

1/2-inch ER20 Spring Collet for CNC Milling, 2-Pack
✔️ 1/2 inch (12.7 mm) clamping, 0.015 mm runout, 40Cr steel, rigid

This is a 1/2-inch ER20 spring collet chuck, built from high-strength 40Cr steel to deliver precise toolholding for CNC engraving, milling machines, and machining centers. It minimizes runout to about 0.015 mm, helping you achieve clean finishes at higher speeds and with repeatable accuracy.

✅ 40Cr steel construction for high strength and rigidity
✅ Precision tolerance: 0.015 mm runout
✅ Clamping diameter: 12.7 mm (1/2 inch)
✅ Included: 2-pack for multiple stations or tools

💡 What is the ER20 spring collet used for in CNC milling and engraving applications?

It's handy for securely gripping cutting tools in high-speed machines.

- 1/2 inch tooling compatibility for ER20 collets - tight runout control with 0.015 mm spec - 40Cr steel construction for durability - ideal for machining centers, CNC milling, and engraving setups