Application and Temperature of Rod End Joint Bearings

Rod end joint bearing: It is a type of joint bearing that has a rod end or is mounted on the rod end. It belongs to a branch of joint bearings, and joint bearings are spherical sliding bearings. The basic type consists of an inner and outer ring with a spherical sliding spherical touch surface.

Due to the composite material embedded on the outer spherical surface of the inner ring, this bearing can generate self smoothing during operation. It is generally used for low-speed swinging motion and low-speed rotation, and can also perform tilting motion within a certain range of viewpoints. When the support shaft is not concentric with the shaft housing hole, it can still operate normally.

Joint bearings can withstand large loads. According to their different types and structures, they can accept radial loads, axial loads, or combined loads of radial and axial loads.

The temperature of the rod end joint bearing can generally be estimated by the temperature outside the rod end joint bearing chamber. If the oil hole can directly measure the temperature of the outer ring of the rod end joint bearing, it would be more suitable.

Usually, the temperature of the rod end joint bearing gradually increases as it starts working and reaches a stable state after 1-2 hours. The normal temperature of the rod end joint bearing varies depending on the machine's heat capacity, heat dissipation, speed, and load. If the surface is smooth and the device is suitable, the temperature of the rod end joint bearing will rise sharply, resulting in abnormal high temperatures. At this point, it is necessary to suspend work and take necessary preventive measures.

The use of a thermal sensor can monitor the operating temperature of the rod end joint bearing at any time. And actively alarm or suspend when the temperature exceeds the specified value to avoid shaft accidents.

High temperature often indicates that the rod end joint bearing is in an abnormal condition. High temperature is also harmful to the lubricant of rod end joint bearings, and sometimes overheating of rod end joint bearings can be attributed to the lubricant of rod end joint bearings. If the rod end joint bearing is continuously connected at a temperature exceeding 125 ℃ for a long time, it will reduce the service life of the rod end joint bearing, and the reasons for causing high temperature of the rod end joint bearing include: lack of smoothness or excessive smoothness, lubricants containing impurities, excessive load, damaged ring of the rod end joint bearing, lack of clearance, and high friction caused by oil seals, etc.

Therefore, continuous monitoring of the temperature of the rod end joint bearing is necessary, whether it is measuring the rod end joint bearing itself or other important components. If the working conditions remain unchanged, any temperature change can indicate that a problem has occurred.