10" 3 Jaw Self Center D1-6 Chuck

  WHAT'S INCLUDED: 1 set of reversible jaws for inside and outside 6 pc of 7/8" diameter stud for D1-6 1 hexagon wrench Description: Accuracy is maintained for the entire clamping range Semi-steel chuck body made from high quality cast iron Three pinion design with each pinion ground and hardened to HRC 43 Two piece jaw design with a master jaw and a top reversible jaw in American Standard tongue and groove specification Both side of jaw teeth and guides are ground and hardened to HRC 58-62 Each set of jaws are serialized in their own set A 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 accuracy Scroll plate's thread flank are ground on both side to achieve a tighter contact with the master jaw Each chuck has gone through rigorous accuracy and repeatability inspection with clamping and jamming multiple random testing rods or rings Internal Jaw: Clamping Range A-A1: 0.236-4.331" Jamming Range B-B1: 3.150-9.843" External Jaw Clamping Range C-C1: 3.543-9.843"