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More Information
Mfg SKU #202-5421
Lathe Chuck CategoryIndependent Lathe Chucks
BrandShars Tool
chuck diameter8
Thru Hole Size2.205
mountingplain back
Bolt Circle Diameter3.740
chuck thickness3.070
TIR (inch)0.0039
jaw movementindependent
Number of Jaws4
Maximum RPM2100
max capacity7.87
min capacity0.394

Spotlight

  • Accuracy is maintained for the entire clamping range
  • Semi-steel chuck body made from high quality cast iron

  • Four operating screw design with each ground and hardened to HRC 43
  • Both side of jaw teeth and guides are ground and hardened to HRC 58-62

  • Four jaws allow a square component to be perfectly centered to the chuck while achieving maximum gripping force
  • 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

  • Operating screw'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

  • plain back mounting


Clamping Range:


 

 

  • Internal Jaw:
    • Clamping Range A-A1: 0.393-3.937"
    • Clamping Range B-B1: 2.480-7.874"

 

What’s Included

  • Included 1 set of reversible solid hard jaws
  • 4 pcs of M10 mounting screws
  • 1 lathe chuck key
  • Inspection report on runout on both inside and outside jaws

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