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There are many structural forms of water pump assembly couplings, so the requirements and methods of assembly are different. For installation, the general principle is to assemble in strict accordance with the requirements of the drawings. Specifically, we can only introduce some couplings that often need attention in the assembly. The problem. Couplings used in high-speed rotating machinery usually need to undergo a dynamic balance test in paper mills. After the dynamic balance test is passed, mark the place where each component cooperates with each other. It is important to assemble as marked when assembling. If any combination is not carried out according to the mark, it is very likely that the vibration of the unit will be caused due to the poor dynamic balance of the coupling.