Precautions for Installation and Lubrication and Maintenance of Bearing

Generally speaking, the bearing installation is determined according to the structure, size and installation part of the bearing, and the nature of its shape. It is also important to clean the lubrication of the bearings before installation:

Precautions for installation of bearing:

1. The fit between the bearing ring and the shaft is mostly transitional fit, and the fit between the bearing seat ring and the bearing seat hole is mostly clearance fit. Generally speaking, this fit is relatively easy to install. The shaft of the bearing should be on the shaft. It is fixed to prevent the circle from rotating relative to the circle, causing unnecessary wear.

In terms of the installation method of the bearing here, there are more rotating installation methods, which can make the inner ring shaft fit tighter.

2. When the mating ratio of the outer ring of the cylindrical roller bearing to the bearing seat is relatively loose, and the mating ratio of the inner ring to the shaft is relatively tight, the bearing can be pressed on the shaft first by the professional press used when installing the bearing, and then installed into the bearing seat together with the shaft and the bearing. During pressure installation, pay attention to the surface of the inner ring of the bearing to be punched up, and then pad a sleeve made of soft metal, the material is copper or mild steel. When the inner diameter of the assembly sleeve is larger than the diameter of the journal and the outer diameter is smaller than the side of the inner ring, it is necessary to avoid pressing on the cage.

Lubricating oil is an indispensable protective material for bearings. Lubricating oil can completely flush into the internal space of the bearing and encase the cage and rolling elements. It not only has no effect on the operation and work of cylindrical roller bearings, but also greatly extends the bearing. Service life. However, due to the frequent use of lubricating oil, a certain amount of oil will be produced, and if the oil is not removed in time, it will affect the service life of the bearing, so it is necessary to remove the oil.

1. When cleaning the bearing of the bearing, the ball, bead frame and inner ring should be turned out laterally from the outer ring and then immersed in hot oil. When cleaning the short cylindrical roller bearing, the roller, bead frame, inner ring and outer ring should also be separated.

Note: When cleaning with hot oil, the temperature of the oil should not exceed 20 ℃.

2, soft dry oil or antirust paste hardened bearings, should be immersed in 100 ℃ ~ 200 ℃ hot oil, clamp the bearing with pliers, with a brush to clean the oil on the bearing. Soft dry oil or antirust paste is heated to 100 ℃ ~ 200 ℃ will melt, it is easy to wash out from the gap of the bearing. Sometimes it is only necessary to shake the bearing several times in the oil. Oil will also flow away from the gap.

Using the above two methods can easily remove the oil on the cylindrical roller bearing, in order to better play the effectiveness of lubricating oil, protect the bearing, and extend the service life of the bearing. In most cases, the failure of the bearing is caused by improper installation and replacement. Therefore, bearing installation and bearing lubrication maintenance is an important operation.