4" 3 Jaw Self Centering Scroll Lathe Chucks Solid Jaws with Semi Machined Threaded Back Plate

SKU 202-5410-202-6106-6

4" 3 Jaw Self Centering Scroll Lathe Chucks Solid Jaws with Semi Machined Threaded Back Plate

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Shipping Ups Ground

$134.60
SKU 202-5410-202-6106-6
Lathe Chuck Category Self Centering Scroll Chucks
back plate diameter 4
chuck diameter 4
thru hole size 0.866
mounting 1 - 8
chuck thickness 2.165
TIR (inch) 0.003
reversible jaw no
Number of Jaws 3
Maximum Input Torque Nm 60
Full Details

Product Spotlight

 

  • Semi-steel chuck body made from high quality cast iron

 

  • Each pinion is ground and hardened to HRC 43
  • Both sides of the 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 jaws to its designated chuck body, the jaws finish machining is performed on a close tolerance state of the art CNC machine from Japan

  • The scroll plate's thread flank are ground on both sides to achieve tighter contact with the master jaw
  • Each chuck has gone through rigorous accuracy and repeatability inspection by clamping and jamming multiple random testing rods or rings
  • Accuracy is maintained for the entire clamping range

 

  • Internal Jaw:
    • Clamping Range A-A1: 0.078-1.181"
    • Jamming Range B-B1: 1.181-3.543"

 

  • External Jaw
    • Clamping Range C-C1: 1.181-3.150"

Size (inch) D (inch) D1 (inch) D2 bolt hole circle dia. (inch) D3 (inch) H (inch) H1 (inch) H2 (inch) h (inch) z-d (metric)
 4 3.937 2.835 3.307 0.866 2.933 2.165 - 0.118 3M-8

 

 

 

 

Semi Machined Threaded Back Plate

 

 

Fully machined back plate can be directly mounted onto our 4" 3 jaw or 4 jaw self centering and independent lathe chuck (p/n 202-5410, 202-5472, 202-5419).You would not need to drill any mounting holes but you will need to turn the shoulder down .050" to match the back of the lathe chuck to make the chuck & back plate more concentric with the lathe spindle. When turning the shoulder of the backing plate, ONLY TURN THE SHOULDER OF THE BACKING PLATE WHEN ATTACHED TO THE LATHE SPINDLE. If you use a chuck to clamp the backing plate and then turn it, the backing plate will not be true to the lathe spindle and will have more runout than specified when the chuck and back plate are put together. 

 

 

Lathe Lathe Chuck Diameter
Brand Model Swing Spindle Thread 3" 4" 5'' 6''
Atlas   6" 1/2"-20 202-6231      
Atlas 10100 6" 1"-10  

202-6107-6

202-6107-3

   
Atlas TH42 10" 1 1/2"-8 202-6230

202-6108-6

202-6108-3

 202-6192

202-6109

202-6119

Atlas 5991 12" 1 1/2"-8 202-6230

202-6108-6

202-6108-3
 202-6192

202-6109

202-6119
Atlas 3986 12" 1 1/2"-8 202-6230

202-6108-6

202-6108-3
 202-6192

202-6109

202-6119
Emco Maier Maximat V10 5" M39x4mm   202-6214  

202-6215

202-6217

Grizzly G8688 7" 3" Flange        
Grizzly G4000 9" M39x4mm   202-6214  

202-6215

202-6217
Harbor Freight 33684 7" 3" Flange        
Harbor Freight 45861 (BV20) 9" M39x4mm   202-6214  

202-6215

202-6217
Homier 03911 7" 3" Flange        
Jet 920N 9" 1 1/2"-8  202-6230

202-6108-6

202-6108-3
 202-6192  

202-6109

202-6119
King CH-920 AG 9" M39x4mm   202-6214  

202-6215

202-6217
Logan   9" 1 1/2"-8  202-6230

202-6108-6

Lathe Chucks

  • Diameter: 4"
  • Thickness: 2.16"
  • Center hole: .87"
  • Bolt Circle Diameter: 3.307"
  • Runout: 0.003"

Back Plate

  • Mounting Thread Size: 1 x 8 TPI
  • Shoulder Diameter: 2.902"
  • Bolt Circle Diameter: 3.307"
  • Hub Length: 0.393''
  • Hub Diameter: 2.2''
  • Flange Thickness: 0.63''
  • Shoulder boss: 0.098''
  • No. of Bolt Holes: 6  

What's Included

  • 4" 3 Jaw Self Centering Scroll Lathe Chucks(p/n 202-5410)
  • 2 set of jaws: inside jaw set and outside jaw set
  • 3 piece of mounting screws for the lathe chuck back plate
  • 1 hexagon wrench
  • Semi Machined Threaded Back Plate(p/n 202-6106-6)

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