In API610, cantilever types are divided into rigid coupling drive and coaxial drive

This post was last edited by ls880828 on 2017-1-18 at 16:00. The difference is very simple; you’ll understand it as soon as I explain it. Indeed, both are rigid. In the case of transmission using a rigid coupling, the drive machine (motor) transfers torque to the coupling, which then transmits it to the pump shaft; the pump shaft in turn drives the impeller to rotate. It’s easy to understand, right? Coaxial design means that there are no couplings or pump shafts at all; the motor shaft is extended, and the impeller is mounted directly on that shaft. From start to finish, there is only one shaft and one bearing, with the bearing serving as the pivot in a cantilever configuration. Do you understand? :Lol, generally vertical centrifugal pumps use a co-axial design; the former is more common, while the latter type of pump is cheaper to manufacture. It also takes up less space in tight spaces such as submarines. As a result, 1. maintenance is difficult, and 2. the pumps cannot be very large.