Importance

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Abstract

A deep groove ball bearing has an outer ring, an inner ring, balls arranged between the outer ring and the inner ring, and a cage for holding the balls. A ratio of an outer ring raceway radius of the outer ring to the ball's diameter is 0.525˜0.570. Two edges of the outer ring raceway in the axial direction define an outer ring raceway limiting angle relative to the center of the arc of the outer ring raceway that is 66°˜97°. A ratio of an inner ring raceway radius of the inner ring to the ball's diameter is 0.510˜0.530. Two edges of the inner ring raceway in the axial direction define an inner ring raceway limiting angle relative to the center of the arc of the inner ring raceway that is 72°˜99°. Compared with the existing art, the deep groove ball bearing has significantly reduced friction torque.

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First Claim