How do the viscosity, dropping point and other parameters of sliding bearing grease affect the operating efficiency of the bearing?
Publish Time: 2025-01-02
Sliding bearings are important components in mechanical equipment, and their normal operation is inseparable from suitable grease. Parameters such as viscosity and dropping point of grease have a crucial impact on the operating efficiency of the bearing.
Viscosity is one of the important performance indicators of sliding bearing grease, which determines the fluidity and adhesion of grease in the bearing. Appropriate viscosity can ensure that the grease forms a uniform lubricating film on the bearing surface, effectively reducing friction and wear. If the viscosity is too high, the fluidity of the grease will deteriorate, making it difficult to fully cover the bearing surface, resulting in poor lubrication, increased energy consumption and heat generation. On the contrary, if the viscosity is too low, it is easy to cause the lubricating film to rupture, and the metal surface will directly contact, which will also accelerate the wear of the bearing and reduce the operating efficiency.
The dropping point is the temperature at which the grease starts to drip during the heating process, which reflects the high temperature stability of the grease. Grease with a high dropping point can still maintain good lubrication performance at high temperatures, and is not easy to deteriorate and lose, thereby ensuring the normal operation of the bearing in a high temperature environment. If the dropping point is too low, the grease will fail easily at high temperatures, resulting in poor bearing lubrication and even failure.
In addition to viscosity and dropping point, other parameters of grease such as oxidation resistance, rust resistance and corrosion resistance also have an important impact on the operating efficiency of the bearing. Good oxidation resistance can extend the service life of the grease and reduce the frequency of replacement; rust resistance and corrosion resistance can effectively protect the bearing from corrosion and rust, and maintain its good operating condition.
In summary, the viscosity, dropping point and other parameters of sliding bearing grease have an important impact on the operating efficiency of the bearing. Selecting the appropriate grease parameters can ensure good lubrication of the bearing, reduce friction and wear, and improve operating efficiency and service life. Therefore, when selecting grease, the most suitable grease type and parameter level should be selected based on comprehensive considerations such as the working conditions, load conditions and use environment of the bearing.
