8" 3 jaw Self Centering Scroll Lathe Chucks 2 Piece Jaws

SKU 202-5434

8" 3 jaw Self Centering Scroll Lathe Chucks 2 Piece Jaws

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Regular Price: $243.75

Online Price Only $157.05

SKU 202-5434
Lathe Chuck Category Self Centering Scroll Chucks
chuck diameter 8
thru hole size 2.559
mounting plain back
Bolt Circle Diameter 7.087
chuck thickness 2.953
TIR (inch) 0.0039
reversible jaw yes
Number of Jaws 3
Maximum Speed RPM 2000
Maximum Input Torque Nm 250
Full Details

Product Spotlight


  • 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


  • Internal Jaw:
    • Clamping Range A-A1: 0.157-3.346"
    • Jamming Range B-B1:2.559 -7.874"
  • External Jaw
    • Clamping Range C-C1: 2.559-7.874"

 

Plain Back
 
 
Size (inch)
Back Plate
D (inch)
D1 (inch)
D2 (inch)
D3 (inch)
H (inch)
H1 (inch)
H2 (inch)
h (inch)
z-d (metric)
 8 Plain7.874
6.496
7.087
2.559
4.803
2.953
3.150
0.197
3M-10

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