Home>Bearing knowledge>The negative influence of the curvature of the deep groove ball bearing groove on the motor

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The negative influence of the curvature of the deep groove ball bearing groove on the motor

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The depth of the groove of the deep groove ball bearing has a negative influence on the motor. The curvature of the groove, that is, the radius of the groove R, has an effect on the operation of the bearing. According to the research of NSK in Japan, the groove curvature of the inner ring is the diameter of the steel ball. Between -0. 520 is appropriate, the groove curvature of the outer ring is between 0. 520-0. 530 of the diameter of the steel ball, and the China Luo axis research institute takes a central value according to NSK, that is, the inner circle takes 0. 515, the outer ring takes 0. 525 or so round, it makes sense. The groove curvature coefficient directly affects the service life of the bearing and the bearing load. Generally speaking, for deep groove ball bearings, the groove curvature is slightly larger than the above data, which is beneficial to the oscillation and noise of the bearing, but together will lower the bearing. Carrying load, if taking a little smaller data, it will have the opposite effect on the oscillation noise of the bearing. The reason is because the groove curvature of the bearing ring is directly related to the contact surface of the steel ball and the ferrule. If the curvature is larger, the contact surface is smaller. When the groove curvature is small, the contact surface is larger (relatively speaking). If a ball rolls over a flat plate, the resistance is small (an infinite expansion of an arc is performed, and a segment of Yinghao is intercepted. Can be seen as a straight line), and rolling in the same arc, the reason for its large resistance is the same, which is why the use of sliding bearings does not have a wide scale of use of rolling bearings.

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