K11-100 Pro Grade 4 Inch 3 Jaw Self Centering Lathe Chuck For CNC Drilling Milling Machine With Low Runout 0.002 Inches 22mm Center Bore 84mm Bolt Circle 55mm Thick Ideal For Precision Machining

4-Inch Pro Grade 3-Jaw Self-Centering Lathe Chuck ✔️ 4-inch chuck with 3 inner jaws, 3 outer jaws, bolts, and key

This 4-inch lathe chuck is a pro-grade 3-jaw self-centering unit ideal for CNC drilling and milling. It delivers low runout, precise clamping, and supports direct bar-stock machining with a 22 mm center bore, 84 mm bolt circle, and 55 mm thickness. The package includes the chuck body, three inner jaws, three outer jaws, three mounting bolts, and a chuck key, making it a complete setup for precision machining on 4-inch lathes.

✅ Diameter 100 mm (3.94"), center bore 22 mm (0.866"), thickness 55 mm (2.16"), bolt circle 84 mm (3.31"), runout 0.002 in (0.05 mm)
✅ Internal Jaw Clamping Range A-A1: 2-30 mm (0.078-1.18 in)
✅ Internal Jaw Clamping Range B-B1: 30-90 mm (1.18-3.54 in)
✅ External Jaw Clamping Range C-C1: 30-80 mm (1.18-3.15 in)
✅ Package Includes: chuck body, 3 inner jaws, 3 outer jaws, 3 mounting bolts, chuck key

💡 What is a 3-jaw self-centering lathe chuck used for in precision machining? This setup is handy for quick, reliable workholding on round stock during turning, drilling, and milling. - quick, centered grip for round parts - supports both inner and outer jaw clamping - keeps runout low for tight tolerances - works with standard center bore and bolt circle specs