In general, the bearings of hydraulic pumps have a longer service life than hydraulic pumps, and when replacing mechanical seals during hydraulic inspection, repair, or maintenance, most of us also replace the bearings. The lifespan of bearings depends on the metal; Exhausted” The required number of hours is a function of bearing load, speed, and bearing smoothness. The hydraulic pump repair company predicts the bearing lifespan to be several years. For example, the company estimates that the 3 * 2 * 10 pump (75mm * 50mm * 250mm) has a pumping density of“ 1” When using liquid, the radial bearing has a service life of 300 years. Therefore, we do not need to replace bearings that are free from wear and defects.The main reason for bearing failure: Overload is the failure factor of most hydraulic pump bearings, and the main reasons are:1. Public service cooperation error between bearings and shafts (shafts exceeding public service);2. There is a malfunction between the hydraulic pump and the drive;3. A winding axis;4. Unbalanced rotating body;5. Push the bearing too far on the cone sleeve;6. Disassemble the pump from the point of good efficiency (BEP);7. Axial diameter thermal expansion;8. If the cooling method of the bearing is incorrect (such as using water or other similar systems to cool the bearing box), the outer diameter of the cooling bearing will shrink, and additional stress will be generated due to the addition of service;9. Cavitation and water hammer;10. Axial thrust;11. The bearing box is sometimes circular;12. Belt pulley transmission planning;The vibration of the pump is caused by various reasons;14. The impeller is too far from the bearing;15. The quality of bearings does not meet the standards, and more and more counterfeit and inferior products are being found in industrial equipment manufacturing, which will become increasingly serious.