SHARS 15 3 Jaw Reversible Jaws Self Centering Lathe Chucks D1-8 +. Each high quality chuck comes with a certification that documents TIR. Spindle Nose Dia: 5.50. 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.
Before 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 Japan. 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.Clamping Range A-A1: 0.453-8.268. Jamming Range B-B1: 3.740-15.748. Clamping Range C-C1: 4.331-15.748. 1 set of reversible jaws for inside and outside. 6 pc of 1 diameter stud for D1-8. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Workholding & Toolholding\Workholding\Other Workholding". The seller is "discount_machine" and is located in this country: US. This item can be shipped worldwide.