Crossed Roller Bearings Common Problems And Solutions


Crossed roller bearings common problems mainly include two aspects: sealing and rotation. Since cross roller bearings have high accuracy, strong bearing capacity and almost no noise during operation. Therefore, in recent years, the demand for cross roller bearings in the bearing market has been increasing. But a large number of products of different brands have enriched the market, and the quality is uneven. So consumers may meet many problems during appilcation. BRS provide some solutions for these problems.

crossed roller bearings common problems
RIGBRS crossed roller bearings

Crossed roller bearings common problems 1 - Why does the sealing performance of crossed roller bearings decrease?

Phenomenon: large friction torque, poor performance against dust or contaminants.

Reasons: the common sealing structure of crossed roller bearings on the market is basically the same size. Due to processing errors, the sealing performance is not good or the friction torque is large, which cannot meet the requirements of the bearings.

Solution: BRS combines the processing accuracy of bearing parts deformation and dimensional tolerance and that of sealing rings to personally design the structural size of the seal ring. So as to compensate for the processing accuracy errors of bearing parts and seals to improve the sealing performance. (For example, RU series and harmonic reducer bearings, BRS uses a specially customized framework oil seal. Its sealing effect is better than the traditional NBR sealing lips, so the service life is longer, and there will be no leakage of oil)

crossed roller bearings sealing
Frame work oil seal on RU42 crossed roller bearing

Crossed roller bearings common problem 2 - Why is there a stuck when rotating the bearings?

Phenomenon: when we rotate the cross roller bearing axially or radially with hands, we can feel the rotation sometimes is tight or flexible, and the operation is not smooth. When rotating quickly or at high speedd, vibration and noise will occur.

Reason: the bearing is not clean, there maybe contaminants on the contacting surface or the working surface is rough, besides, improper assembly may also lead to this problem.

Solution: Choose the appropriate cleaning fluid and cleaning method, strictly control the flatness and cleanliness of the bearing working surface, or contact your supplier directly.