ZWZ bearing lubrication for the purpose is to avoid direct contact between the Slewing bearing parts, to avoid temperature rises, reducing wear and rust. Choose grease should consider factors are: Bearing rotation, bearing load, operating temperature, the working environment and bearing installation status. Is the choice of grease or oil lubrication, depending on the bearing type. Even with the grease, as a result of different temperatures, are also different types of grease.
Lubricants divided into three categories according to their different shapes: oil, grease and solid lubricants. Special lubricants are mineral oil, vegetable oil, synthetic oil, the main quality indicator is viscosity, viscosity index, pour point, acid value, flash point, and other impurities. Dead grease lubricants and additives in the mixture under high temperature, can be classified into calcium-based grease, sodium grease, sodium calcium based grease, lithium grease, aluminum and molybdenum disulfide grease grease, etc. its quality indicators have cone penetration, dropping point, mechanical safety, oxidation stability, corrosion resistance and so on.
Backing bearings are particularly thick outer ring of the rolling bearing, when used to form a group to be mounted on the shaft of a stationary support rollers. Pressure on the work roll through the intermediate roller and the support roller is passed to the system to the rack through the saddle. Generally used for multi-roll cold rolling mill equipment can also be used for other occasions, such as straightening machine.
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