ER-40 Collet Chuck Big 100 Mm Diameter 42 Mm Height Heavy-Duty Pro-Grade Precision Workholding For CNC Lathes And Milling Machines Fits ER-40 Collets With 0.0016 Inch Concentricity For Highly Accurate Stable Centering

Heavy-Duty ER-40 Collet Chuck, 100 mm Diameter
✔️ 0.0016 in concentricity; 3-bolt 84 mm circle; lathe/mill ready

This heavy-duty ER-40 collet chuck provides a stable platform for holding larger workpieces on CNC lathes and milling machines. It supports mounting to backplates and can serve as a fixed milling fixture, delivering precise centering with ER-40 compatibility.

✅ 100 mm diameter base provides a stable platform
✅ Fits ER-40 collets with 0.0016 in concentricity for minimal runout
✅ Three bolt holes on an 84 mm circle for rigid mounting
✅ Overall dimensions: D1 100 mm (3.94 in); D 72 mm (2.83 in); L 42 mm (1.65 in)

💡 What is an ER-40 collet chuck used for in CNC workholding?

In short, it's a handy fixture that securely grips tools and workpieces to improve accuracy and repeatability across turning and milling operations.

- handy CNC workholding with high-precision ER-40 compatibility - improve concentricity and reduce runout for consistent cuts - works on lathes with backplates or as a fixed milling fixture ✝️