The demand of automobile transmission shaft cross bearing on the smooth data in addition to the collision resistance and good abrasion resistance outside, still should have good mechanical stability, high temperature resistance (Gao Didian), corrosion resistance, water resistance and oxidation stability and other characteristics.

Gear oil temperature and water resistance is unable to reach the demand. In the grease in addition to calcium base grease (hereinafter referred to as the calcium base grease), and lithium based grease (hereinafter referred to as the Li Jizhi), aluminum base grease and sodium base grease etc.. In fact, the car transmission system is the use of smooth always No. 2 or no. 3 Li Jizhi Li Jizhi, due to drop point relative calcium base grease has high (Li Jizhi is 170 DEG -190 DEG C, calcium base grease is 90 DEG -100 DEG C) and good thermal stability.

Removing cross needle roller bearing skills of higher demand, usually need to car repair factory by a professional repair master end. And the cross shaft smooth work, back to normal protection projects, usually every 2000km March will protect a, if every protection to repair factory, which will undoubtedly increase the owner's economic burden; if every car is equipped with a special hydraulic filling equipment, it is not realistic. While the use of grease smooth, just a general grease gun, the driver can end, time-saving and economic.

But some driver operation method is not correct, would constitute a grease can not enter the inner bearing. The correct method of operation is: the grease gun oil KouJin pressure in the butter on the mouth, continuously operating grease gun, grease in the pressure under the effect of the mouth into the butter cross shaft through internal oil path, and then reach the 4 shaft journal end cross shaft, with the needle roller bearings, needle roller bearings within the residual will decay the grease and impurities from the oil seal extrusion. The grease and impurities to each bearing all decay after extrusion (see fresh grease is extruded), then the completion of the job. Such as work time grease can not be pressed into the bearing, should replace the butter nozzle or disassemble the cross shaft cleaning oil path, re filling, to ensure driving safety.

In addition, with the development of the car industry, molybdenum disulfide grease is widely used in automobile industry. The so-called molybdenum disulfide grease in the minority, made two colloidal aluminium sulfide is in grease or composite calcium base grease. Molybdenum disulfide as lamellae, the sulfur atom has a strong affinity for metal, so very simple forms a smooth oil film strong conflict in appearance.