Automobile transmission shaft 10 bytes to the lubrication material requirements in addition to have good resistance to friction and abrasion resistance, also should have good mechanical stability, high temperature (high drop point), corrosion, oxidation stability and water resistance properties.
Gear oil of high temperature resistance and water resistance is unable to meet the requirements.In addition to calcium base grease in the lubricating grease (hereinafter referred to as the calcium base grease), and lithium grease (hereinafter referred to as lithium base grease), sodium aluminum base grease and grease, etc.And, in fact, the automobile drive train lubrication has been used 2 or 3 lithium base grease, because lithium base grease calcium base grease has a relatively high drop point (lithium base grease for 170 ℃ to 190 ℃, calcium base grease for 90 ℃ to 100 ℃) and good thermal stability.
Remove the spider technology demand is higher, generally need to car repair shop repair by professional master to complete.Cross shaft and the shaft lubrication operation, belongs to the daily maintenance project, generally every will maintain a 0 km, if every time maintenance to the repair shop, it increases the owner's economic burden;If each car is equipped with a dedicated hydraulic filling equipment, is also not realistic.With grease lubrication, just a ordinary grease gun, the driver can be completed, save time and the economy.
But some drivers operation method is not correct, cause unable to enter the bearing grease.The right operation method is: will grease gun oil closemouthed on butter mouth, continuously operating grease gun, make the grease under pressure through the internal oil grease fitting into the cross shaft, then reach the shaft 4 journal of end face, full of the needle roller bearing, and at the same time will be residual metamorphic needle bearing grease and impurities from the oil seal.For each bearing inner spoil all grease and impurity extrusion out (see fresh grease), after the job completion.Such as operations cannot be pressed into the bearing grease, should replace the grease nipple or remove the spider cleaning oil, again, to ensure driving safety.
In addition, with the continuous development of auto industry, molybdenum disulfide grease is widely used in automotive industry.The so-called molybdenum disulfide grease, is in the lithium base grease or adding a small amount of gel sulfide compound calcium base grease of aluminum.Molybdenum disulfide is flaky crystal, the metal has a strong affinity for sulfur atoms, so it is easy to form solid lubricating film in friction surface.
