Shars 8" 3 Jaw Reversible Self Centering Lathe Chucks D1-6 0.0039" TIR Certificate NEW 202-5440 R[

Accuracy is maintained for the entire clamping rangeSemi-steel chuck body made from high quality cast ironThree pinion design with each pinion ground and hardened to HRC 43Two piece jaw design with a master jaw and a top reversible jaw in American Standard tongue and groove specificationBoth side of jaw teeth and guides are ground and hardened to HRC 58-62Each set of jaws are serialized in their own setA serialized set of jaws are then finished, ground, and lapped on their designated chuck body which will be the same chuck body on the final assembly to achieve a greater accuracyBefore assembling the jaw to its designated chuck body, the jaw's finish machining are performed on a closed tolerance state of the art CNC machine from JapanScroll plate's thread flank are ground on both side to achieve a tighter contact with the master jawEach chuck has gone through rigorous accuracy and repeatability inspection with clamping and jamming multiple random testing rods or rings

• MFG SKU #: 202-5440
• Brand: Shars Tool
• Chuck Diameter: 8
• Stud Diameter: 7/8
• Thru Hole Size: 2.362