Shars 8" 4 Jaw Self Centering Lathe Chucks with 2 Sets of Jaws  + .0039" TIR Certificate New

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

Product Code

Product description

Product features

• A matching back plate (sold separately) would need to be machined on the face and hub OD in order to fit this chuck. For detailed information, please look for the Shars back plate machining guide.
• 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 rangeClamping Range:

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

Product includes

Relate Product

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We have other chucks & back plates available at My Ebay Store :

If you need to speak to a sales person feel free to call. We are open Monday through friday 8:30 to 5:00 est. Phone:1-630-443-3244
Email: [email protected]

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.

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Illinois resident adds 8% sales tax.

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.