متن: Moreover, the fluidity of butter at room temperature is very poor, and the roller needle can only rotate in place during work. Therefore, when the original oil film fails, it is difficult to form a new oil film, resulting in a semi-dry friction or dry friction state of the universal joint shaft.
Due to the poor toughness of the butter oil film, while the universal joint shaft has to withstand greater torque and alteating loads during operation, it is difficult to form a good oil film in the bearing. Therefore, grease should not be used for the lubrication of cardan shafts, but gear oil should be added. The cardan shaft bears a large torque and alteating load during work.
The main forms of damage are the wear of the cardan shaft joual and needle roller bearing, the indentation and the working surface of the cardan shaft joual and needle bearing bowl. Flaking. In the vehicle maintenance specifications, it is stipulated that the sliding fork teeth and intermediate bearings use calcium-based grease (butter); the needle roller bearings of cardan shafts and the intermediate bearings of three-axle drive vehicles use gear oil. However, in actual work, because the grease nipple of the cardan shaft is the same as the grease nipple, sometimes it is for easy operation and sometimes there is no CV Joint components manufacturers filling equipment.
Many drivers and maintenance personnel erroneously dare to use butter on the needle roller of the cardan shaft. Lubrication, causing early damage to the cardan shaft. The above content is about the composition and function of butter. I believe that everyone has read the content shared by the editor and already knows whether adding butter can lubricate the universal joint shaft!