SHARS 6" 4 JAW INDEPENDENT LATHE CHUCK WITH CERTIFICATE NEW R[

SHARS 6" 4 JAW INDEPENDENT LATHE CHUCK WITH CERTIFICATE NEW Each high quality chuck comes with a certification
Product Code
202-6579
Product description

Chuck diameter: 6"

Thickness: 2.559"

Center hole: 1.575"

Back mounting: Plain back

Bolt Circle Diameter: 5.709"

Product features

Accuracy is maintained for the entire clamping range

Semi-steel chuck body made from high quality cast iron

Three pinion design with each pinion ground and hardened to HRC 43

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 plain back mounting Internal Jaw:

Clamping Range A-A1: 0.315-3.149"

Clamping Range B-B1: 1.968-6.299"

Product includes

4 mounting screws

1 lathe chuck key

Inspection report
When you pick fully machined back, please follow the following instruction. How to process back plate to guarantee Chuck's T.I.R? The fully-machined chuck back plates can be mounted onto 6" 4 jaw independent lathe chuck (p/n 202-6579A). 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. 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. We have other chucks & back plates available at : 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. Any questions regarding our tools, feel free to email us at our Pricetronic Message Box .

Returns Accepted for this item if it's within 30 Days