Constant velocity joints for rear wheels for small and lightweight 4-wheel drive vehicles

Too much oil in the bearing and the box will cause the bearing to slip

Excessive amount of oil in the spherical roller bearing and the box will cause the rolling element of the spherical roller bearing to slip, causing the rolling element to change from rolling friction to sliding friction, and damage the rolling element of the spherical roller bearing. If the amount is too large, the free space in the spherical roller bearing box is small, the operating temperature of the spherical roller bearing will rise, the degree of grease will decrease, the lubricating oil film of the rolling element will become thinner, and the lubrication conditions will be poor, which is easy to cause the spherical roller bearing. Abnormal noise, surface slippage, shorten the life of spherical roller bearings. Generally, there is a spherical roller bearing oil chamber on the side of the end cover (the exception is designed as a double-sealed spherical roller bearing). According to the rotation speed, the amount of oil that can be filled in the spherical roller bearing chamber can be implemented according to the following standards: speed <1500r/ min, the amount of oil is 2/3 of the volume of the spherical roller bearing chamber. When the speed is between 1500 and 3000r/min, it is 1/2 of the volume of the spherical roller bearing chamber. When the speed is more than 3000r/min, it should be less than or equal to 1/3 of the volume of the spherical roller bearing. In the actual working process, for the spherical roller bearing running at high temperature and high speed, the spherical roller bearing with sealing surface should be used as little as possible, the oil storage capacity of the oil cap should be increased, and the oil nozzle should be installed, which can improve the self-aligning roller bearing. Sub bearing operating life.

Intrusion of foreign matter can easily cause bearing failure

Foreign body intrusion. Use special tools as much as possible, and try to avoid the use of cloth and short fibers, so as to prevent fine fibers from entering the spherical roller bearing and causing unnecessary damage. For another example, when installing a spherical roller bearing, the staff used the copper rod knock-in method, which is easy to cause uneven axial force on the spherical roller bearing, causing deformation of the cage, damage to the rolling elements, and increased clearance. During the knocking process of the copper rod, the copper powder flies into the cage of the spherical roller bearing, which is easy to cause the failure of the spherical roller bearing. Poor bearing installation, what's wrong

Bad installation. The installation of spherical roller bearings is to follow the installation steps of spherical roller bearings, and do not savagely install and disassemble. Whether the spherical roller bearing is installed correctly is related to the service life of the spherical roller bearing, so everyone must pay attention. When installing the spherical roller bearing, avoid holding it directly by hand, because the sweat on your hands may also cause rust, so don't ignore the small links. When installing the spherical roller bearing, the most important thing is to not allow strong stamping, and it is not allowed to directly hit the spherical roller bearing with a hammer. Bearings can no longer be used. Also, it is not allowed to transmit pressure through the rolling elements.