Two manifestations of cracks in roller needle bearings

Parts such as bearings, as an important part of industrial equipment, in the process of use, if the damage and failure of the equipment are caused by the problems of the bearing itself, it is very worthwhile. This requires us to do a good job in the maintenance and troubleshooting of roller needle roller bearings in peacetime. First of all, we need to understand two reasons for the cracks in needle roller bearings. Only by understanding the possibility of cracks in roller needle roller bearings can our bearings play a better role in industrial production and processing activities. The crack is in two aspects: on the surface, it is the effect of the external load caused by the plastic deformation of the working surface and the periodic change of the contact stress of the strain-hardened surface during the rolling contact of the spherical roller bearing, and Eventually, small cracks develop from the inner surface, with the formation of surface cracks in between, due to the ingestion of lubricant on the work surface, the opening force that slams against the wall, forcing the crack to advance. Second, from the surface layer, under repeated pressure, the contact of the surface, at the beginning, a crack is formed at a certain depth where the surface is exposed, and the angle along the surface direction, to a certain depth, from the surface of the contact surface, And beyond the surface, and eventually form etch stripping, leaving a pit. From the bearing surface, or from the surface crack, if the surface quality of the part is poor, there is a defect (oxidation, decarburization), poor friction or lubrication, from the surface crack. Don't ignore the cracks in the roller needle bearing. Slow accumulation will greatly reduce the use effect of the bearing. Many people choose roller needle roller bearings, so do you know that the life of roller needle roller bearings is closely related to cleaning and maintenance? We must do a good job of cleaning and maintenance when we work, so that we can make roller needle roller bearings It is in the best running state, thus prolonging the service life of the bearing. So let's take a look at how to clean it. The cleaning of roller needle bearings is usually divided into two ways: rough cleaning and fine cleaning: rough cleaning: use a brush in oil to remove grease or adhesions. When cleaning with this method, care should be taken to avoid damage to the rolling surface due to foreign objects. Fine cleaning: Usually neutral non-water diesel or kerosene is used as cleaning agent, and then sometimes warm lye is used as needed. The fine cleaning method should rotate the bearing slowly in the oil and must be carried out carefully. After cleaning, the bearing must be immediately coated with anti-rust oil or anti-rust grease. Professional roller needle roller bearing manufacturers will provide each consumer with more professional information, and everyone must take it seriously when choosing.

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