6" 3 Jaw Reversible Jaw Self Center Lathe Chuck+1-1/2"-8 Back Plate TIR

Shars 6" 3 Jaw Reversible Jaws Self Centering Lathe Chuck + .003” TIR Runout Certificate + 1-1/2“-8 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
202-5433 + 202-6109
Product description

Diameter: 6"

Center hole: 1.772"

Bolt Circle Diameter: 5.591"

Runout: 0.003"

Max. Input Torque: 160 Nm Clamping Range:

Internal Jaw:

Clamping Range A-A1: 0.118-2.165"

Jamming Range B-B1: 1.968-6.299"

External Jaw

Clamping Range C-C1: 2.165-5.709"

Product features

American Standard

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

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

size (inch) D (inch) D1 (inch) D2 Mounting Hole Bolt Circle Dia (inch) D3 (inch) H (inch) H1 (inch) h (inch) z-d (metric) 6 6.299 5.118 5.591 1.772 4.291 2.559 0.197 3M-8
Product includes

1 set of reversible jaws for inside and outside

3 piece of mounting screws for the lathe chuck back plate

1 hexagon wrench

6.3" Back Plate Product Description

Mounting Thread Size T: 1-1/2'' x 8 TPI

Shoulder Diameter D1: 5.16"

Bolt Circle Diameter D2: 5.591"

Hub Length C: 0.551''

Hub Diamete D: 3.58''

Flange Thickness B: 0.63''

Shoulder boss h: 0.16''

No. of Bolt Holes: 3

How to process back plate to guarantee Chuck's T.I.R?
Fully machined back plate can be directly mounted onto our 6" 3 jaw or 4 jaw self centering lathe chuck (p/n 202-5433, 202-5411, 202-5473).
You would not need to drill any mounting holes but you will need to turn the shoulder down .050" 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.
Product features

Made from high grade cast iron

Fits most 6" self centering plain back chuck (please verify the bolt circle diameter and shoulder diameter on the back of the lathe chuck)

Lathe Lathe Chuck Diameter BRAND MODEL SWING SPINDEL THREAD 3" 4" 5" 6" ATLAS 6" 1/2"-20 202-6231 ATLAS 10100 6" 1"-10 202-6107-6, 202-6107-3 ATLAS TH42 10" 1 1/2"-8 202-6230 202-6108-6, 202-6108-3 202-6192 202-9106, 202-6119 ATLAS 5991 12" 1 1/2"-8 202-6230 202-6108-6, 202-9108-3 202-6192 202-6109, 202-6119 ATLAS 3986 12" 1 1/2"-8 202-6230 202-6108-6, 202-6108-3 202-6192 202-6109, 202-6119 EMCO MAIER MAXIMAT V10 5" M39X4MM 202-6214 202-6215, 202-6217 GRIZZLY G8688 7" 3" FLANGE GRIZZLY G4000 9" M39X4MM 202-6214 202-6215, 202-6217 HARBOR FREIGHT 33684 7" 3" FLANGE HARBOR FREIGHT 45861(BV20) 9" M39X4MM 202-6214 202-6215, 202-6217 HOMIER 03911 7" 3" FLANGE JET 920N 9" 1 1/2"-8 202-6230 202-9108-6, 202-6108-3 202-6192 202-6109, 202-6119 KING CH-920 AG 9" M39X4MM 202-6214 202-6215, 202-6217 LOGAN 9" 1 1/2"-8 202-6230 202-9108-6, 202-6108-3 202-6192 202-6109, 202-6119 LOGAN 10" 1 1/2"-8 202-6230 202-9108-6, 202-6108-3 202-6192 202-6109, 202-6119 LOGAN 11" 2 1/4"-8 202-6234 202-6110, 202-6120 LOGAN 12' 2 1/4"-8 202-6234 202-6110, 202-6120 LOGAN 6510/6560 14" 2 1/4"-8 202-6234 202-6110, 202-6120 MICRO-MARK 82710 7" 3" FLANGE MICRO-MARK 82500 7" 3" FLANGE SEARS 101.07301 6" 1"-8 202-6106-6, 202-6106-3 SEARS 101.2899 12" 1 1/2"-8 202-6230 202-6106-6, 202-6106-3 202-6192 202-6109, 202-6119 SHELDON WM-46-P 13" 2 1/4"-8 202-6234 202-6110, 202-6120 SHERLINE ALL 3.5" 3/4"-16 202-6212 SIDNEY MACHINE LOT 160 14" 2 1/4"-8 202-6234 202-6110, 202-6120 SOUTH BEND CL187ZB 10" 2 1/4"-8 202-6234 202-6110 We have other chucks & back plates available at :
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 SHIPPING: UPS Ground
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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. Any questions regarding our tools, feel free to email us at our Pricetronic Message Box

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