By identifying the lubricant of the lubricant sampling and analysis, by the degree of pollution, whether foreign matter or metal powder judgment. This method does not close observation of bearings or large bearings are particularly effective. Operation can not be directly observed bearing needle roller bearings, but by the situation noise, vibration, temperature, lubricants, etc. can check on bearing exception. Identified by voice, it requires experience. We must be able to identify adequate training to achieve sound bearing and non-bearing sounds. Needle Roller Bearing Co., Ltd. Linqing municipal and Mr.Song disclose to you, combined needle roller bearings designed for use with the shaft bearing raceway of the bearing stiffness has certain requirements; or with a standard inner ring IR were inlayed Needle Bearing AXK3552, the hardness of the shaft is not required, the structure will be more compact, needle roller bearings based on the use of different occasions AXK5070, can be used without an inner ring of the bearing or needle roller and cage assembly, this time bearing mating journal surface and the housing As the bearing bore directly on the surface, the outer surface of the needle roller bearings rolling AXK4565, in order to ensure load capacity and operating performance and have the same bearing rings, shaft or housing bore raceway surface hardness, machining accuracy and surface quality should be bearing rings similar roller. Needle roller bearings needle roller bearings _ AXK2542_ by LINQing municipal governance and needle and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) (www.zhgzzc.net) strong, credible, in other industries, Liaocheng accumulated a large number of loyal customers. The company better work attitude and constantly improve governance and innovative ideas will lead the needle into the brilliant and you work for a better future!