8" 4 Jaw Self Centering Lathe Chuck + TIR Certificate + D1-4 Back Plate New XL[

Description: SHARS 8" 4 Jaw Self Centering Lathe Chucks with TIR Certificate + D1-4 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 202-5474+202-6154 Chuck description A matching back plate 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. Chuck diameter: 8" Thickness: 2.95" Center hole: 2.56" Bolt Circle Diameter: 7.087" Runout: 0.0039" Max. Input Torque: 250 Nm 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 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" size (inch) D (inch) D1 (inch) D2 Mounting Hole Bolt Circle Dia (inch) D3 (inch) H (inch) H1 (inch) h (inch) z-d (metric) 8 7.874 6.496 7.087 2.559 4.291 2.653 0.197 3M-10 Product includes 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 8" Back Plate Description: Diameter: 8" Taper: D1-4 Diameter Of Stud: 5/8" Studs Included: 3 Shoulder Diameter: 6.496" Bolt Circle Diameter: 7.087" This machined back plate is designed to mount onto our 8" 3 jaw or 4 jaw self centering lathe chuck (p/n 202-5434, 202-6189, 202-5412, 202-5474). The mounting holes to mount the back plate to the chuck are drilled and tapped, and the registration (shoulder) needs to be slightly turn down to match the recess on the back of the lathe chuck. If your chuck has 3-M10 and D2=7.087", this back plate will fit your chuck. Product features Made from high grade cast iron Fits most 8" self centering plain back chuck (please verify the bolt circle diameter and shoulder diameter on the back of the lathe chuck) How to process back plate to guarantee Chuck's T.I.R? The fully-machined chuck back plates can be mounted onto 8" 3 jaw or 4 jaw self centering lathe chuck (p/n 202-5412, 202-5434, 202-5474, 202-6189). 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. 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 Product includes 3 pcs of studs for mounting into the cam lock on lathe spindle We have other chucks & back plates available at My Ebay Store : Related products 8" Fully Machined Threaded Back Plate with 1-1/2 x 8 TPI for 3 or 4 Jaw Self Centering Lathe Chucks p/n: 202-6201 8" Fully Machined Threaded Back Plate with 2-1/4 x 8 TPI For 3 or 4 Jaw Self-Center Chuck p/n: 202-6202 8" Semi-Machined Threaded Back Plate with 2-3/8"- 6 TPI FOR 8" 3-JAW AND 4-JAW LATHE CHUCKS p/n: 202-5900 Related products THREADED BACK PLATE 8" Semi-Machined 1-3/4-8 TPI FOR 8" LATHE CHUCK p/n: 202-6161 8" D1-3 Fully Machined Back Plate For 8" 3 and 4 Jaw Self Centering Chucks p/n: 202-6153 8" D1-4 Fully Machined Back Plate For 8" 3 and 4 Jaw Self Centering Chucks p/n: 202-6154 Related products 8" D1-6 Fully Machined Back Plate For 8" 3 and 4 Jaw Self Centering Chucks p/n: 202-6155 8" D1-5 Lathe Chuck Adapter Plate Semi-machined for 8" Plain Back lathe chuck p/n: 202-5455 SHARS 7/16" Self-Ejecting Lathe Chuck Key p/n: 202-2032 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.

Price: 271.95 USD

Location: Saint Charles, Illinois

End Time: 2024-08-22T15:51:52.000Z

Shipping Cost: N/A USD