The Gold Standard for Independent Chucks
BISON, has been producing manual chucks for over sixty years and is the largest manual chuck manufacturer in the world.
They offer a comprehensive selection of the manual 4-jaw independent chucks. There are 4-jaw chucks with forged steel, steel and semi steel bodies that are provided with A, D, L, and Plain Back Mounts. Chucks are also available with 2-Piece hard reversible jaws and with two sets of hard solid reversible jaws.
Outstanding accuracy, a forged steel body with heat treated jaw guideways, durability, precise finishing and a large variety of back plates as well as direct mounts make these chucks usable in any machining applications including rough, medium and finishing cuts.
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