When the koyo bearing rotates, the raceway surfaces of the inner ring and the outer ring of the bearing are in rolling contact with the rolling elements, so the running track is a dark surface, and the running track attached to the raceway surface is not abnormal. Know the load conditions, so when disassembling the cylindrical roller bearing, please pay close attention and observe the running track of the raceway surface. If you carefully observe the running trajectory, you will know that only radial load, large axial load, moment load, or extreme rigidity unevenness on the bearing housing. It can be checked whether an unexpected load is applied to the bearing and whether the installation error is a national university, etc., and become a clue to investigate the cause of the koyo bearing damage. Correct installation of cylindrical roller bearings is the guarantee of their extended service life. Many people do not have the professional knowledge in this area, and they are not particularly in place during installation, which may easily lead to improper bearing installation and mechanical operation accidents. As a professional mechanical maintenance engineer For the installation of koyo bearings must have some understanding. Generally speaking, the bearing installation is determined according to the structure, size and installation part of the bearing, and its cloud-like nature. When installing, pay attention to applying pressure directly on the surface of the ring, and it must be applied vertically. The pressure cannot be applied by rotating the rolling elements. The more common methods of bearing installation are as follows: the matching method between the bearing ring and the shaft is mostly a transition fit, and the matching between the seat ring of the koyo bearing and the bearing seat hole is mostly a clearance fit. This kind of fit is generally It is relatively easy to install, and the central shaft of the bearing should be fixed on the shaft, so as to avoid the relative rotation of the peripheral ring, resulting in unnecessary wear and tear. In terms of the installation method of the bearing here, there are more ways to rotate the installation, which can make the inner ring fit more tightly. When the outer ring of the cylindrical roller bearing fits loosely with the bearing seat, and the inner ring fits tightly with the shaft, the professional press used when installing the bearing can be used to press the bearing on the shaft first, and then press the bearing on the shaft, koyo The bearing is installed into the bearing seat together. When applying pressure to install, pay attention to the surface of the inner ring of the bearing, and then pad a sleeve made of soft metal. The material is copper or mild steel. When the inner diameter is larger than the journal diameter, and the outer diameter is smaller than the retaining edge of the inner ring, it is necessary to avoid putting pressure on the cage. Because lubricating oil is an indispensable protective material for bearings, lubricating oil can completely rush into the inner space of the bearing and cover the cage and rolling elements, which not only has no influence on the operation and work of cylindrical roller bearings, but also greatly prolongs service life of the bearing. However, due to the frequent use of lubricating oil, there will be a certain amount of oil pollution, and if the oil pollution is not removed in time, it will affect the service life of the bearing, so it is necessary to remove the oil pollution. First, when cleaning the koyo bearing of the bearing, the balls, the ball carrier and the inner ring should be turned out of the outer ring laterally and then immersed in the hot oil. When cleaning the short cylindrical roller bearing, the roller and the ball carrier should also be removed. , the inner ring and the outer ring are disengaged. Remember that the temperature of the oil should not exceed 20°C during hot oil cleaning. Second, the bearings hardened by soft dry oil or anti-rust paste should be immersed in hot oil at 100 ℃ ~ 200 ℃, clamp the bearing with pliers, and use a brush to clean the oil on the bearing. Soft dry oil or anti-rust paste is heated to 100 ℃ ~ 200 ℃ to melt, and it is easy to wash out from the gap of the bearing. Sometimes it's just a matter of shaking the koyo bearing multiple times in the oil. Oil stains will also run away from the crevices. Using the above two methods, the oil stains on the cylindrical roller bearing can be easily removed, so as to better exert the effect of lubricating oil, protect the bearing and prolong the service life of the bearing.
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