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    2 Products

    Taper-Mount Keyed Drill Chucks

    Image of Product. Front orientation. Drill Chucks. Taper-Mount Keyed Drill Chucks, Heavy Duty.
    Image of Attribute. Jacobs Taper Mount. Top orientation. ZoomedIn view. Contains Border. Drill Chucks. Taper-Mount Keyed Drill Chucks.

    Heavy Duty

    Jacobs Taper

    Mount

    Secure bits into your drill press, milling machine, or lathe. These chucks are keyed, so they grip bits tightly to prevent slipping under heavy loads. Use the included key to tighten and loosen the jaws. Attach these chucks to your machine with a Jacobs taper arbor. To maximize grip and minimize runout, choose a chuck where your drill bit diameter falls in the middle of the bit shank size range.
    Jacobs—Jacobs chucks are the most widely used drill chucks.
    Heavy Duty—Heavy duty chucks give you the rigidity and heft needed for high-torque drilling in hardened metal. Their extra mass means they resist vibration and fluctuating cutting forces to keep your bit stable. While they share all of the same features as medium duty chucks—one-piece sleeve, center-ground jaws, and hardened wear points—they grip bits tighter and stay accurate longer under heavy loads.
    Drill Chucks
    Replacement Jaw
    and Nut Sets
    Chuck
    Key
    Machine Taper
    No.
    For Bit Shank
    Size
    Duty
    Rating
    Wt.,
    lb.
    Total Indicated Runout
    (TIR) Accuracy
    Included
    No.
    Jaw
    Material
    Body
    Material
    For Use With
    For Tool Drive Direction
    Mfr. Model
    No.
    Each
    Each
    Jacobs—Plain Bearing
    Jacobs 31/8" to 5/8"
    3 mm to 16 mm    		Heavy2.20.004"YesK3SteelSteelDrill Presses
    Lathes
    Milling Machines    		Clockwise, Counterclockwise3A2812A3400000002812A86000000
     
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