8" 6 Jaw Adjustable Self Centering Lathe Chuck + .0005" TIR Certificate

SHARS 8" 6 Jaw SET-TRU Lathe Chuck .0005" with Fine Adjustment + TIR Certificate NEW Competitors' Regular  Price: $1958.30 Wholesale Price: $751.95(Save $1206.35 61.60% OFF) Founded in 1978, Shars Tool Company has been serving the industrial community and machine shops in the USA for over 30 years. We carry high quality live centers, with individual certificate in each product.
Product Code
202-5468
Product description

Diameter: 8"

Back mounting: Plain back

Center hole: 2.264"

Thickness: 3.122"

Bolt Circle Diameter: 7.5"

Adjusting Accuracy within: 0.0002"

TIR Repeatability: .0005"

Product features

To achieve the .0005" radial runout and repeatability, it's required to use the 4 micro adjustment set screws to true the designated ground bar stock, not the chuck body. Do not attempt to put the indicator on the outside diameter of the chuck body to dial it to zero first as this would create more runout on the bar stock. The adjustable chuck is intended to give high repeatability clamping on a particular bar stock size after the set screw adjustment.  After the adjustment is made on a particular bar stock rod, for example 1/2", it's required to true the bar stock again when clamping a different size diameter, for example 1".  Please refer to the back plate machine guide pdf file for more mounting instructions.

Grips firmly with less total pressure, less distortion and eliminates need for collets

Semi-steel chuck body made from high quality cast iron

Single pinion design pinion ground and hardened to HRC 43

Two piece jaw design with a master jaw and a top reversible jaw in

American Standard tongue and groove specification

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

Chuck Diameter 5" min-max 6" min-max 8" min-max 10" min-max 12" min-max 15" min-max A1 .1395-1.6292 .3150-2.5197 .3150-3.5433 .5118-4.9457 .5118-5.1575 .6299-7.9528 A2 1.2992-2.7559 1.8110-3.8189 2.4409-5.3150 3.0315-6.8504 3.3465-7.1654 4.4882-11.0236 A3 2.9921-4.6850 3.6620-5.7480 4.5276-7.6772 5.7087-10.0787 6.6929-11.0236 7.6772-14.9606 A4 1.9685-3.4252 2.5984-4.7683 2.6772-5.9055 3.3465-7.4016 3.7008-8.8976 4.3307-11.4961 A5 3.7008-4.9213 4.6457-6.2992 5.0394-7.8740 6.1024-9.8425 7.2047-12.4016 7.6772-14.9606 size 6" 8" 10" 12" D 6 8.27 10 12 D1 3.125 4.75 6.374 7.905 D2 5.343 7.5 4.375 5.25 D3 1.535 2.265 2.835 3.268 H 3.882 5.206 6.056 6.569 H1 2.323 3.122 3.492 3.980 h 0.689 0.752 0.803 0.803 z-d 6 holes 1/4"-20 6 holes 3/8"-16 6 holes 7/16"-14 6 holes 1/2"-13
Product includes

1 set of reversible jaws for inside and outside

6 piece of mounting screws for the lathe chuck back plate

1 hexagon wrench

Each high quality chuck comes with a manufacturer certification. Relate Product please click picture for relate products' details. 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:
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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