R8 Round Collet Mill Chuck Holder For CNC Engraving And Milling Tools, 10mm Clamp, 7 16 UNF Thread, Ultra Precision 0.015 mm, Durable 1 8 Taper, Silver Finish, High Strength Milling Lathe Accessory

R8 Round Collet Chuck Holder for CNC Milling and Engraving
✔️ 10 mm clamp, 7/16-20UNC tail thread, 104 mm length, single unit

This high-precision R8 round collet mill chuck holder is designed for CNC engraving and milling work. It securely grips end mills, drills, engraving bits, and other rotary tools on CNC lathes and milling machines, delivering tight alignment and reduced runout for cleaner finishes.

✅ Material: 45# carbon steel, hardened to HRC40-50
✅ Clamping diameter: 10 mm (25/64 in), tail thread: 7/16-20UNC
✅ Total length: 104 mm (4.09 in), max outer diameter: 32 mm (1.26 in)
✅ Accuracy: 0.015 mm, taper: 1:8
✅ Pack size: 1 piece

💡 What is a round collet chuck holder used for in CNC machining? This handy tool securely holds rotary tools during milling and engraving operations.
- Handy for securing end mills, drills, engraving bits in CNC machines
- Reduces runout and improves accuracy during milling and engraving projects
- Uses standard 1:8 taper with 7/16-20UNC tail for quick spindle connections
- Made from hardened 45# steel for durability and long life

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