In the industrial field, multistage centrifugal pumps are widely used in the process of liquid transportation and fluid pressurization. The selection of suitable bearings is crucial to the performance and life of multistage centrifugal pumps. So, which bearing type should be selected to better meet the requirements of multi-stage centrifugal pumps? Multistage centrifugal pump manufacturer Changsha Zoomlian Pump Industry will conduct a detailed analysis of several common types of multistage centrifugal pump bearings, and give professional selection guidelines.
1、 Deep groove ball bearing
Deep groove ball bearing is a common bearing type, which has the advantages of large carrying capacity and high speed. In multistage centrifugal pumps, deep groove ball bearings are usually used to bear axial loads and certain radial loads. Its compact structure is suitable for high-speed operation scenarios. However, the disadvantage of deep groove ball bearings is that they are not suitable for bearing large radial loads and impact loads, so they need to be weighed according to specific conditions when designing multistage centrifugal pumps.
2、 Contact ball bearing
Contact ball bearing is a common type of bearing in multistage centrifugal pumps, which can withstand large radial and axial loads at the same time. Contact ball bearings have high stiffness and accuracy, and are suitable for high-speed operation and high working environment requirements. However, contact ball bearings need to be designed with reasonable lubrication and sealing to ensure their normal operation and life.
3、 Cylindrical roller bearings
Cylindrical roller bearing is a type of bearing that can withstand large radial loads and relatively high axial loads. In multistage centrifugal pumps, cylindrical roller bearings are often used to withstand large axial thrust and radial loads. It has the advantages of strong carrying capacity and wear resistance, but because of its relatively long structure and large space, installation and layout need to be reasonably considered in the design of multistage centrifugal pumps.
In conclusion, when selecting multistage centrifugal pump bearings, comprehensive analysis should be carried out according to specific application scenarios and working conditions. Deep groove ball bearings are suitable for applications such as high-speed operation, contact ball bearings are suitable for conditions under both radial and axial loads, and cylindrical roller bearings are suitable for scenarios under high radial and axial loads.
Therefore, when designing a multistage centrifugal pump, the bearing should be selected according to the specific situation to ensure the normal operation and performance of the centrifugal pump. In the selection process of multi-stage centrifugal pump bearings, it is also necessary to pay attention to reasonable lubrication and maintenance. The selection and use of lubricating oil have an important impact on the bearing life. At the same time, regular inspection and maintenance of the working state of bearings, timely replacement of seriously worn bearings, can extend the service life of multistage centrifugal pumps.