4" 3Jaw Self Centering Lathe Chucks TIR Certificate+1-8 TPI Thread Back Plate L[

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Seller: Top-Rated Seller discount_machine ✉️ (262,284) 99.8%, Location: Saint Charles, Illinois, US, Ships to: US & many other countries, Item: 300774981172 4" 3Jaw Self Centering Lathe Chucks TIR Certificate+1-8 TPI Thread Back Plate L[.

 
SHARS 4" 3 Jaw Self Centering Lathe Chucks w/ TIR Certificate + 1-8 Back Plate New
For back plate you would not need to drill any mounting holes but you will need to turn the shoulder D1 down .040" to match the back of the lathe chuck to make the chuck & back plate more concentric with the lathe spindle and reach chuck's TIR

Each high quality chuck comes with a certification that documents TIR.

   

 

Product Code

 

202-5410 + 202-6106-6

 

 

 

Product description

 

Lathe Chuck:

  • Diameter: 4"
  • Thickness: 2.16"
  • Center hole: .87"
  • Bolt Circle Diameter: 3.307"
  • Runout: 0.003"
  • Max. Input Torque: 60 Nm

Back Plate:

  • Mounting Thread Size T: 1- 8 TPI
  • Shoulder Diameter D1: 2.87"
  • Bolt Circle Diameter D2: 3.307"
  • Hub Length C: 0.393''
  • E: 0.5"
  • Hub Diameter D: 2.2''
  • Flange Thickness B: 0.63''
  • Shoulder boss h: 0.1''
  • No. of Bolt Holes: 6  

Product application    

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. 

Product features
  • 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

How to process back plate to guarantee Chuck's T.I.R?

 
 

 

Fully machined back plate can be mounted onto 4"3 jaw or 4 jaw self centering and independent lathe chuck (p/n 202-5410, 202-5472,202-5600, 202-5419). As long as back plate Shoulder Diameter 2.87"> chuck's D1, all 4" chuck will fit in. All back plates have 0.04" allowance, please measure the size of Chuck's D1 before process your back plates. The size of back plates's D1 should be a little bit smaller than the size of Chuck's D1. Because the gap between back plate and chuck is smaller, chuck's TIR is better. No gap is the best. D1 need to be processed before back plate can be mounted.

You would not need to drill any mounting holes but you will need to turn the shoulder down .040" 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. 

  • The back plate may come with two or three additional screws (depending on type) for removal the back plate from the chuck. They are not used to mount the chuck to the back plate, mounting screws should be included with the chuck

   

 
 

 

 

 

 

 

Lathe                                                                                                                       Lathe Chuck Diameter

BRAND

MODEL

SWING

SPINDEL 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 202-9106, 202-6119
ATLAS 5991 12" 1 1/2"-8 202-6230 202-6108-6, 202-9108-3 202-6192 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 202-9108-6, 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 202-9108-6, 202-6108-3 202-6192 202-6109, 202-6119
LOGAN   10" 1 1/2"-8 202-6230 202-9108-6, 202-6108-3 202-6192 202-6109, 202-6119
LOGAN   11" 2 1/4"-8     202-6234 202-6110, 202-6120
LOGAN   12' 2 1/4"-8     202-6234 202-6110, 202-6120
LOGAN 6510/6560 14" 2 1/4"-8     202-6234 202-6110, 202-6120
MICRO-MARK 82710 7" 3" FLANGE        
MICRO-MARK 82500 7" 3" FLANGE        
SEARS 101.07301 6" 1"-8   202-6106-6, 202-6106-3    
SEARS 101.2899 12" 1 1/2"-8 202-6230 202-6106-6, 202-6106-3 202-6192 202-6109, 202-6119
SHELDON WM-46-P 13" 2 1/4"-8      202-6234 202-6110, 202-6120
SHERLINE ALL 3.5" 3/4"-16 202-6212      
SIDNEY MACHINE LOT 160 14" 2 1/4"-8     202-6234 202-6110, 202-6120
SOUTH BEND CL187ZB 10" 2 1/4"-8     202-6234 202-6110  

 
   

 

 


SHIPPING: UPS Ground

Buyer pays ACTUAL UPS shipping & insurance, and a $3.00 handling fee for this item to be shipped to all states within the continental United States. Hawaii, Alaska & and other United States Territories will ship via UPS BLUE. Canada will pay actual shipping costs plus duty fees via UPS.  We can combine other auctions or store items to save on shipping. You may ask for freight cost before buying tools. Shipment will be made the same day as your payment is received and an UPS tracking number will be email to you. If your order is being shipped to an address outside of the United States, local consumer tax and/or customs duty , brokerage charges may apply and the package's recipient may need to pay these to clear customs.


PAYMENT:

We accept  VISA, MasterCard and E-Check on PayPal.com Illinois resident adds 8% sales tax.


RETURNS:

If the item stated as brand new is found defective on arrival or incorrect item was shipped, buyer understands that the product will be repaired or replaced at seller's discretion, and be given a reasonable amount of time. Buyer is responsible for return shipping costs and insurance. Warranties are offered by the manufacturer and will be honored by the manufacturer. All shipping and handling fees will not be returned in any case.


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  • Condition: New

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