Generally speaking, bearing installation is determined by the structure, size, and installation part of the bearing, as well as its shape and properties. Similarly, lubrication and cleaning of bearings before installation are also important:

1、 Installation precautions for bearings:

1. The fit between the bearing ring and the shaft is mostly a transitional fit, and the fit between the bearing seat ring and the bearing seat hole is mostly a clearance fit. This fit is generally easy to install, and the middle shaft of the bearing should be fixed on the shaft to avoid unnecessary wear caused by the rotation of the ring relative to the circumference. In terms of the installation method of bearings here, there are more ways to install them by rotating them, which can make the inner ring and shaft fit more tightly.

2. When the outer ring of a cylindrical roller bearing fits loosely with the bearing seat, and the inner ring fits tightly with the shaft, a professional press used during bearing installation can be used to first press the bearing onto the shaft, and then install it together with the shaft and bearing into the bearing seat. When applying pressure during installation, pay attention to the surface of the inner ring of the bearing to be flush, and then pad a soft metal sleeve made of copper or soft steel. When the inner diameter of the assembly sleeve is larger than the diameter of the shaft neck and the outer diameter is smaller than the edge of the inner ring, avoid applying pressure on the cage.

2、 Lubricating oil is an essential protective material for bearings. It can completely flush into the internal space of the bearing, enveloping the retainer and rolling element. It not only has no impact on the operation and operation of cylindrical roller bearings, but also greatly extends the service life of the bearings. However, due to the frequent use of lubricating oil, certain oil stains will be generated. If the oil stains are not removed in a timely manner, it will affect the service life of the bearings, so it is necessary to remove the oil stains.

1. When cleaning bearings, the balls, ball racks, and inner rings should be horizontally rotated out of the outer ring and then immersed in hot oil. When cleaning short cylindrical roller bearings, the rollers, ball racks, inner rings, and outer rings should also be separated.

Attention: During hot oil cleaning, the temperature of the oil should not exceed 20 ℃.

2. Bearings hardened with soft dry oil or anti rust paste should be immersed in hot engine oil at 100 ℃~200 ℃, clamped with pliers, and cleaned of oil stains on the bearings with a brush. Soft dry oil or anti rust paste can melt when heated to 100 ℃~200 ℃, making it easy to flush out from the gaps in the bearings. Sometimes just shake the bearing multiple times in the oil. Oil stains can also flow away from the cracks.

The above two methods can easily remove the oil stains on cylindrical roller bearings, in order to better utilize the lubricating oil, protect the bearings, and extend their service life. In most cases, the failure of bearings is caused by improper installation and lubrication. Therefore, the installation and lubrication maintenance of bearings are important operations.