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Experimental measurements of the rest-slope and steady torque on ball bearings experiencing small angular rotations

Ball bearings experiencing small angular oscillations have been shown to trace out hysteresis loops. The hysteresis torque of ball bearings can be characterized by two parameter: the steady rolling friction torque T s and the rest slope σ. Accurate prediction of these parameters is crucially important to designers, as the control of slowly rotating systems that use ball bearings is often dependent on hysteresis torque