Tungsten Disulfide Applied for Lubricating Hub Bearing

Tungsten disulfide for lubricating hub bearing is a kind of anti-wear lubricating material that can be used under various harsh conditions such as high temperature, ultra-low temperature and strong corrosion. Hub bearing is one of the key parts of automobiles, and is very close to the ground and high-temperature brake discs and other parts, so it needs to adapt to various complex road conditions and harsh driving environments. And therefore, in order to prolong the service life of the hub bearing, it is necessary to apply lubricating oil to reduce friction. However, lubricating oil will evaporate in high temperature environment and thaw in low temperature environment, reduce lubricating oil activity or lose lubricating effect, so frequent addition of lubricating oil is required.

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To solve the above-mentioned problems, researchers have developed an automotive wheel hub bearing lubricating material containing tungsten disulfide, which is high-temperature resistant, low-temperature resistant and wear-resistant. The weight percentage of this lubricating grease material is: base oil 75%-90%, tungsten disulfide 5-10%, titanium dioxide 5-10%, hydrophobic silica 5-10%, dialkyl molybdenum dithiophosphate 0.5-1%, dialkyl zinc dithiophosphate 0.5-1%, polyisobutylene succinimide 0.5-1%, phosphate ester 0.5-1%, polymethacrylate 0.5-1%, non-silicon antifoaming agent 0.05-0.1%. Wherein, the role of nano WS2 is to improve the heat resistance and lubricity of lubricating oil.

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