the lubricant and the raceway surface contact, over time will corrode surfaces

To prevent premature bearing failure is the most effective way to avoid the above analysis of these factors contribute to a variety of factors and conditions: First, the bearing should be selected prior to use, taking into account the size of the noise, the size of the rigid, bearing radial fissures size, the size of rotational torque. Choice of lubricant, according to the bearing of the work environment, the type of lubricant in use produce different media noise. Such as grease lubrication oil lubrication noisy than the more well-lubricated bearings is to extend the life of the first condition. Use lubricated properly, can improve the accuracy of the smooth movement, but also can play a vibration absorbing buffer, reducing wear and tear effect. However, in the actual work which, Slewing bearing and lubrication quarter pollution is inevitable. The most common is the use of the protective cover can not completely prevent the relative movement of dust and stolen intrusion. However, the relative movement of inner and outer rings can not completely prevent contamination of the bearing, if the bearing is contaminated, the lubricant becomes the source of the noise, the bearing overheating due to poor lubrication, leading to locking. Therefore, the lubricant is not clean, the bearing rotates, the lubricant and the raceway surface contact, over time will corrode surfaces.
Reasonable assembly premature failure of the bearing service life is also extremely important. Machinery and equipment which use the same types of Stainless steel slewing bearing  domestic and imported there are obvious differences, this is mainly because the material and machining accuracy is also equipped with the irrational can not shirk responsibility. Assembly method is correct or not directly related to the ability to ensure proper clearance, if improper assembly and disassembly, ranging from the formation of indentations in the raceway, weight will cause the bearing scrap. If the gap is too small, the additional torque bearings will increase. Bearing centerline and the bearing bore centerline between the angular displacement increases, will the working status of bearing deterioration, these must be avoided.
When the bearing is overloaded, fatigue will occur as soon as possible. If the reason for damage to the overload, then try to use the installation and design of the bearing load capacity, and according to the design requirements of timely maintenance and updates.