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On an independent-jaw chuck, each jaw can be moved independently. Because they most often have four jaws, the term four-jaw chuck without other qualification is understood by machinists to mean a chuck with four independent jaws. The independence of the jaws makes these chucks ideal for (a) gripping non-circular cross sections and (b) gripping ...
The cutting edges of the drill bit contact the workpiece, and are connected via the shaft with the shank, which fits into the chuck. In many cases a general-purpose arrangement is used, such as a bit with cylindrical shaft and shank in a three-jaw chuck which grips a cylindrical shank tightly.
Even on many drill presses, handheld drills, and lathes, which have chucks (such as a drill chuck or collet chuck), the chuck is attached by a taper. On drills, drill presses, and milling machines , the male member is the tool shank or toolholder shank, and the female socket is integral with the spindle.
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Typical manual pallet jack (lowered) A pallet jack, also known as a pallet truck or pallet pump, is a tool used to lift and move pallets.Pallet jacks are the most basic form of a forklift [1] and are intended to move palletized loads within warehouses, distribution centers, retail stores, and construction sites.
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The double-wishbone suspension can also be referred to as ‘double A-arm,’ though the arms themselves can be A-shaped, L-shaped, or even a single bar linkage. The complete TAK-4 independent suspension system set-up also includes a subframe which contains the axle differential, half shafts, and wheel ends with steering attachments and brakes.
John Rackham [a] (hanged 18 November 1720), [2] commonly known as Calico Jack, was an English pirate captain operating in the Bahamas and in Cuba during the early 18th century. His nickname was derived from the calico clothing that he wore, while Jack is a nickname for "John".
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