NSK non-standard bearing manufacturing maintenance of concrete material

NSK non-standard bearing manufacturing maintenance of concrete material to source: bearing | last updated: - 2020 08 - 06 NSK non-standard bearing manufacturing to take in the maintenance of material at present, about 80% of non-standard bearing parts of the damage was caused by friction, wear and tear. Of course, can be reasonably select friction pair matching material such as learning methods to reduce wear and tear, and through the reasonable structure design, and adopt reasonable lubrication can yet be regarded as an effective method of anti-friction. Lubrication is using a material film will be the surface of the relative movement separated each other, low shear resistance, low wear and tear caused by this material. NSK bearings and lubricating oil in the main role in transmission is to reduce friction and reduce wear and tear, to extend the service life of mechanical parts as much as possible. In addition, the lubricating oil also has cooling, washing, protection, sealing, rust, unloading, shock absorption, carrier on additive and structural materials, and so on. Lubricating oil, one of the more important physical and chemical indexes of NSK bearings meshing speed is to choose the major indexes of the viscosity. Appropriate NSK bearing lubricating oil viscosity, should make the internal friction of the lubricating oil, NSK bearing surfaces wear and noise, vibration and so on a much less. Lubricating oil viscosity is mainly through the base oil and viscosity index improver. The viscosity of the lube base oil related to molecular structure and molecular weight: the greater the average molecular weight, the greater the viscosity of oil. In terms of base oil, mineral oil type oil include paraffin base crude oil refining lubricating oil, naphthenic base crude oil refining lubricating oil and lubricating oil three intermediate base crude oil refining. And paraffin base crude oil refining lube oil, its viscosity-temperature performance is better than the other two. Good stick refers to the agent, not only requires high viscosity increasing ability, shear stability, but also with good low temperature performance and thermal oxidation stability. Shear stability stick refers to the agent, due to its high polymer main chain under the action of a shear stress fracture, the molecular weight is reduced, the product is thinning, and series of influence on wear and tear, fuel consumption, etc. For the same viscosity grade of lubricating oil, if choose not refined base oils and not very good stick refers to the agent, although could reach a certain standard viscosity, but viscosity-temperature property, shear stability, such as poor performance, also the use of any cycle. Therefore, for the cement of low speed and heavy loading speed reducer, avoid using this kind of lubricating oil, and selection of high quality senior lubricating oil, because of its base oil and viscosity index are better.