BT30 ER20 Collet Chuck Tool Holder 60mm Projection Heavy Duty 4 Pack Drawbar M12x1.75 1.38in Nut 75 FtLb Max Torque 0.0001 TIR Balanced To G2.5 At 20000 RPM CNC Machining Accessory

ER20 Collet Chuck Kit for CNC 60mm projection 4-pack
✔️ 60mm projection, ER20 collet, M12x1.75 drawbar, 75 ft-lb torque

These ER20 collet chucks are heavy-duty tool holders designed for CNC milling and machining centers. With a 60 mm projection and M12x1.75 drawbar threading, they fit standard spindles and keep tools stable at high RPMs. This four-pack is ideal for production setups needing quick tool changes and consistent performance.

✅ Projection length: 60 mm (2.36 in) reach
✅ Drawbar thread: M12x1.75
✅ Collet series: ER20; nut diameter 1.38 in (35.05 mm)
✅ Max torque: 75 ft-lb; TIR 0.0001 in; balance to G2.5 at 20,000 RPM

💡 What is a collet chuck used for in CNC machining?
- Handy tool for secure, repeatable tool mounting in CNC milling
- Improves runout control and accuracy at high RPM
- Works with ER20 collets and standard drawbars like M12x1.75
- Ideal for quick tool changes in production milling