How to maintain the dung sucking universal joint cross shaft needle roller bearing

Dung sucking, pollution and so on automobile drive shaft universal joint cross shaft needle bearing should use gear oil is smooth, but we often found in the maintenance of practice, a lot of users of the drive shaft universal joint cross shaft needle roller bearing is applied is smooth calcium base grease ( Commonly known as butter) To smooth, practice on the smooth way is wrong, it will cause a large number of cross shaft needle bearing early damage. We can clearly see that in the process of remove the cross shaft journal presents the squeezed groove, journal and needle in seriously short of oil. Appear this kind of phenomenon is mainly due to the universal joint cross shaft smooth nozzle of needle roller bearing is a common grease nipple, so give people an illusion, universal filling butter to smooth for a long time. In fact, from the nozzle with grease gun is difficult to mix the butter filling on the needle roller bearing, due to the viscosity of butter, when using grease gun from the nozzle to the universal joint cross shaft needle roller bearing inner cavity loaded with butter, butter into the oil duct stenosis lumen resistance increase, butter across the open pressure nozzle pressure reducing valve and overflow, so will give people an illusion, thought to fill. But practice basic did not enter the needle between butter, is to reach the axle shaft end face is also very difficult. When remove the maintenance, even using force to apply butter in the needle roller and shaft neck appearance also can have some smooth effect, but the smooth effect of needle bearing the cross shaft, smooth calcium base grease is much less than the gear oil well, the reason is as follows: u universal joint in the work take a lot of torsion and alternating load, and smooth calcium base grease oil film strength level is poorer, friction in the bearing and shaft neck appearance is difficult to form a good oil film. Taken the universal joint cross shaft turn needle roller bearing in the work can only be in situ, not along the steel bowl and cross axis neck rotation, and calcium base grease smooth scrolling sex is very poor, so when the oil film cannot immediately constitute a new oil film after being destroyed. Smooth painted calcium base grease is a mixture of calcium soap and lubricating oil, oil in use due to the smooth transformation and evaporation, the grease into a hard calcium soap and calcium soap itself not only cannot have smooth effect, but also the obstacles to the needle on the journal of rolling, with universal joint cross shaft and there is no discharge of oil measures, changed smooth fat cannot eduction, new oil and it is difficult to injection, thus greatly accelerate the universal joint cross shaft needle roller bearing wear. In order to change this butter substitute gear oil to smooth the erroneous practice of universal joint cross shaft needle roller bearing, small make up in this initiative in the following maintenance measures, in order to progress the use of universal joint cross shaft needle roller bearing life. U stop after remove the universal joint cross shaft needle bearing thoroughly clean, smooth the remaining fat all clear ( Available water or in gasoline cleaning) After 2 min - in the gear oil L0min, can use. Should pay attention to in using: auto wading after driving should be timely to change the new oil. Dung sucking, pollution, car and other cars in the range of 2000 km 3500 km should be changed when a new oil. Do the benefits of is, can make the universal joint cross shaft needle roller bearing longevity 2 times Three times. U can be with special hydraulic filling equipment, the drive shaft universal joint cross shaft needle bearing stop smooth on a regular basis.