11/16 Inch Spring Collet For CNC Milling And Lathe Tools, Heavy Duty 65Mn Spring Steel Precision Router Collet For Engraving, Tool Holding, And Rock Solid Pro Grade All Around Machining Performance

1 x ER40 Spring Collet for CNC Milling, Engraving
✔️ ER40 collet: clamp 11/16 in (17.46 mm), OD 1.61 in (41 mm)

This ER40 spring collet is a heavy-duty tool holder designed to grip milling cutters, drills, and other rotating tools with precision. It is a common choice for CNC milling centers, lathes, engraving machines, and router tables where precise tool positioning and firm clamping are critical for high-quality outcomes in engraving, drilling, and tapping tasks.

✅ Clamping diameter: 11/16 in (17.46 mm)
✅ Outer diameter: 1.61 in (41 mm)
✅ Total height: 1.81 in (46 mm)
✅ Material: 65Mn spring steel, HRC115; precision ±0.008 mm

💡 What is an ER40 spring collet used for in CNC milling and engraving? A handy tool holder that keeps cutters secure with minimal runout.

- Tool holding: secure grip for milling, drilling, tapping - Material & durability: 65Mn steel, HRC115 - Precision: 0.008 mm accuracy for consistent results ✝️