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20" 3Jaw Reversible Self Center Lathe Chuck D1-11 Mounting Back Plate TIR Certi[

$ 798.83

Availability: 100 in stock
  • Return shipping will be paid by: Buyer
  • Refund will be given as: Money back or exchange (buyer's choice)
  • MPN: 202-5449+202-6123
  • All returns accepted: Returns Accepted
  • Condition: New
  • Item must be returned within: 30 Days
  • California Prop 65 Warning: WARNING: This product can expose you to chemicals including nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
  • Brand: Shars Tool

    Description

    20" 3-Jaw Reversible Self-Centering Lathe Chuck + D1-11 Back Plate TIR Runout Certificate NEW
    Competitors'
    Regular  Price: 66.00
    Wholesale Price: 12.95(Save 3.05 36.05% OFF)
    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
    Product Code
    202-5449+202-6123
    Product Code
    202-5449
    Product description
    Diameter: 20"
    Back mounting: Plain back
    Center hole: 7.87"
    Thickness: 4.53"
    Bolt Circle Diameter: 18.307"
    Runout: 0.0059"
    Max. Input Torque: 630 Nm
    Product application
    Product features
    American Standard
    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
    Accuracy is maintained for the entire clamping range
    Internal Jaw:
    Clamping Range A-A1: 0.984-11.024"
    Jamming Range B-B1: 5.906-19.685"
    External Jaw
    Clamping Range C-C1: 5.906-19.685"
    Plain Back
    Size (inch)
    Back Plate
    D (inch)
    D1 (inch)
    D2 (inch)
    D3 (inch)
    H (inch)
    H1 (inch)
    H2 (inch)
    h (inch)
    z-d (metric)
    20
    Plain
    19.685
    17.323
    18.307
    7.874
    7.992
    4.528
    4.843
    0.236
    6M-16
    Product Code
    202-6123
    Product description
    Diameter: 20"
    Taper:  D1-11
    Diameter Of Studs: 1-3/16"
    Studs Included:  6 pcs
    Product application
    For use adapting flat back chucks to any taper spindle
    Product features
    Semi-finished D cam-lock studs type
    Cast iron camlock adapter plates with through hole
    How to process back plate to guarantee Chuck's T.I.R?
    The semi-machined back plate has to be processed into fully-machined which is showed in the above fig before they can be mounted.
    The fully-machined back plate can be mounted onto 20" 3 jaw or 4 jaw self centering or independent lathe chuck (p/n 202-5424, 202-5449).
    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.
    All Available to Ship NOW! at Fixed Prices
    SHIPPING: UPS Ground
    Buyer pays
    ACTUAL UPS shipping & insurance, and a .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.
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