HEAVY LOAD CARRYING CAPACITY SPHERICAL KINEMATIC COUPLING. _x000D_
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THE KINEMATIC ELEMENTS CONSIST OF SEGMENTS OR SLICES OF A VERY LARGE SPHERICAL DIAMETER OR ELLIPSES._x000D_
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THE TWO SECTIONS OF A LARGE SPHERICAL DIAMETER WITH A COMMON AXIS OF SYMMETRY._x000D_
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AN ULTRA FINE GRAIN, HIGH CHROME, HIGH CARBON, STAINLESS STEEL, HARDENED TO 58 HRC, MINIMUM IS USED