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Analysis of Causes of overheating of tractor gearbox
Lubricant oil level is too low or too high: If the oil level is too low, the rotating joint surface will not be well lubricated, generating frictional heat. If the oil level is too high, it will increase the friction area between the rotating surface and the oil, resulting in heat deterioration of the lubricating oil, thereby reducing the lubrication effect. Therefore, when we add lubricant to the transmission case, we should use the dipstick reticle as the standard. The pre-tightening force of the bearing is large, the gear meshing clearance is too small, and the frictional resistance increases after the operating temperature rises to generate heat. It is also a cause of overheating of the gearbox. The bearing's bearing pre-tightening torque and meshing clearance should be adjusted according to the regulations. Another reason is that the tractor is overloaded for a long time, the bearing capacity of the gear teeth is too large, the lubricating film on the tooth surface is sheared and damaged, and the frictional heat is increased. Choosing the correct working speed of the tractor will not only achieve the best productivity and economy, but also extend the life of the tractor. Therefore, the tractor should not be overloaded.