Is it better for a centrifugal pump to have an extended motor shaft without a coupling, or to have a coupling?
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Is it better for a centrifugal pump to have an extended motor shaft without a coupling, or to have a coupling? What are the advantages and disadvantages of each of the two?
The extended motor shaft provides good alignment and is easy to install, but its length makes it prone to breaking, requiring the replacement of the entire motor at high cost. The available standard motors for couplings have low costs.
Without a coupling, it has no advantages other than shorter installation dimensions and lower costs
Without a coupling, it is a reduced-specification design that results in the loss of many functions; repair is also difficult. It’s better to use the standard version with a coupling
There doesn’t seem to be any advantage to making it into a complete shaft; the main issue is that not having a coupling increases maintenance costs
The entire shaft does not need to be aligned or centered during installation and maintenance. The downside is that it is not convenient for maintenance.
Those with couplings are user-friendly, and they require low costs and are convenient for maintenance
This post was last edited by foam_ZPTK on 2019-3-17 22:18 to check the power. Couplings are generally not considered for systems with a power rating of 37 kilowatts or less. However, for powers over 45 kilowatts, it is recommended to use a coupling.