Abstract
Heat transfer through the inner and outer rings of an Angular ball bearing was investigated experimentally and heat transport by the ball rotation was analyzed theoretically. The bearing used was lubricated by oil film and was rotated in the range from 600-4000r/min. Considering heat generation by the friction, the net heat flow between the rings could be evaluated. The results show that the heat transfer based on the ball rotation is dominant and its conductance depends on the rotational speed and the axial force. The other route of heat transfer is considered mainly due to the convection of air and its heat flow rate depends on the rotational speed.
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