As a kind of high-precision thin section bearing, crossed roller bearing must have standardized operation behavior and technical guidance to prevent possible bad conditions during its production, installation and operating.
1. Crack defects
There are cracks in part of the gap. The reasons are as follows: the impact load of the host is too large, and the interference between the spindle and the bearing is large; there is also large peeling friction that causes cracks; the accuracy of the cross roller bearing during installation is poor; improper use and friction cracks. Countermeasures: Check the conditions of use. At the same time, set appropriate interference and check materials, improve installation and use methods, and check lubricants to prevent friction cracks.
2. Metal peeling off the surface of the raceway
The raceway surface of the cross roller bearing is peeled off. After peeling, it showed obvious unevenness. The reason is that the bearing rolling elements and the inner and outer ring raceways are all subjected to cyclic pulsating loads, resulting in cyclical contact stress. When the number of stress cycles reaches a certain value, fatigue peeling occurs on the working surfaces of the rolling elements or inner and outer ring raceways. If the bearing load is too large, this fatigue will increase. In addition, improper bearing installation and shaft bending can also cause raceway peeling.
Treatment method: re-check the operating conditions and select YRT turntable bearings and proper clearances, and check the machining accuracy, installation methods, lubricants and lubrication methods of the shaft and bearing box.
Please check the Product Guide to select suitable bearings for your machinery.
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