Four Pack 4 Inch CAT40 ER16 Collet Chuck Set With 0.0001 Inch TIR For CNC Milling Lathe Engraving End Mills Drills Reamers Center Drills Heavy Duty Pro Grade Tool Holder

Four Pack CAT40-ER16 4in Collet Chuck Kit with 0.0001 TIR
✔️ 4 x CAT40-ER16 collet chucks, 4in projection, 0.0001 in TIR

These four CAT40-ER16 collet chucks offer solid, precise tool holding for CNC milling and engraving. Designed to clamp straight shank tools like end mills and drills, they achieve minimal runout thanks to a tight TIR of 0.0001 inch. Widely used in shops, machine shops, and prototyping labs for reliable performance across milling and drilling tasks.

✅ 0.0001 inch TIR for tight runout and precise centering
✅ Suitable for clamping end mills, drills, taps, reamers, and center drills
✅ 4 inch projection length provides good reach in crowded setups
✅ Pack of 4 pieces for quick tool changes and replacements

💡 What is a CAT40 ER16 collet chuck used for in CNC milling and why is low TIR important?
These chucks are handy for secure tool holding in milling centers and lathes.
- CAT40 ER16 collet chuck securely clamps straight shank tools like end mills and drills
- Low TIR of 0.0001 inch minimizes runout and improves finish
- 4 inch projection length helps reach in tight work areas
- Pack of 4 pieces keeps spare chucks aligned with main tools