SHARS 6" SEMI-MACHINED BACK PLATE D1-4 FOR ALL PLAIN BACK LATHE CHUCK NEW

For back plate you would need to drill mounting holes and 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

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

Semi-machined back plate can be mounted onto 6" 3 jaw or 4 jaw self centering lathe chuck (p/n 202-5433, 202-5411, 202-5473). As long as back plate Shoulder Diameter 5.16"> chuck's D1, all 6" 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.

We have matching LATHE CHUCKS available: 

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Order# 202-5411	Order# 202-5433	Order# 202-5473	Order# 202-6188
6" 3 jaw Self Centering Scroll Lathe Chucks Solid Jaws	6" 3 jaw Self Centering Scroll Lathe Chucks 2 Piece Jaws	6" 4 jaw Self Centering Scroll Lathe Chucks Solid Jaws	6" 3 jaw Front Mounting Self Centering Scroll Lathe Chucks 2 Piece Jaws

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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.