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Mfg SKU #202-5420
Lathe Chuck CategoryIndependent Lathe Chucks
BrandShars Tool
chuck diameter6
Thru Hole Size1.772
mountingplain back
chuck thickness2.559
jaw movementindependent
Number of Jaws4

Spotlight

  • Accuracy is maintained for the entire clamping range
  • Semi-steel chuck body made from high quality cast iron
  • Three operating screw design with each 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
  • 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

size (inch) Back Mounting D (inch) D1 (inch) D2 (inch) D3 (inch) H (inch) H1 (inch) h (inch) h1 (inch) z-d (metric)
3 plain back 3.150 2.165 2.598 0.866 2.323 1.693 0.157   4M-6
4 plain back 3.937 2.835 3.307 0.984 3.031 2.126 0.157   4M-8
6 plain back 6.299 2.559 3.740 1.772 3.661 2.559 0.197   4M-10
8 plain back 7.874 2.953 3.740 2.205 4.213 2.953 0.236   4M-10
8 D1-4 7.874 2.501 3.252 2.205 4.213 2.953 0.512 0.394 3M-10X1
10 plain back 9.843 4.331 5.118 2.953 4.724 3.150 0.236   4M-12
10 D1-6 9.843 4.188 5.252 2.953 4.724 3.150 0.630 0.512 6M-16X1.5
12 plain back 12.598 5.512 6.496 3.740 5.433 3.543 0.236   4M-16
12 D1-6 12.598 4.188 5.252 3.740 5.433 3.543 0.630 0.512 6M-16X1.5
16 plain back 15.748 6.299 7.283 4.921 5.630 3.740 0.315   4M-16
20 plain back 15.748 7.847 9.291 6.299 6.299 4.135 0.315   4M-20

What’s Included

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

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