SHARS 8 3-Jaw Self-Centering Lathe Chuck Reversible Jaws +. 0039 TIR Runout Certificate NEW. Outstanding accuracy, versatility and durability. Each high quality chuck comes with a. Bolt Circle Diameter: 7.087.
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. Accuracy is maintained for the entire clamping range. Clamping Range A-A1: 0.157-3.346.Jamming Range B-B1:2.559 -7.874. Clamping Range C-C1: 2.559-7.874. 1 set of reversible jaws for inside and outside. 3 piece of mounting screws for the lathe chuck back plate. The item "8 3 Jaw Self Centering Plain Back Lathe Chuck Reversible. 0039 TIR Cert R" is in sale since Monday, January 27, 2014. 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 Saint Charles, Illinois. This item can be shipped to United States, Canada.