Which is easier to maintain, a single-stage cantilever pump or an axially split double-suction pump?
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Are there any friends who work on maintenance in factories? Based on your experience, which is easier to maintain: single-crank cantilever pumps or axially split double-suction pumps? It would be best if someone with actual experience in maintenance could give some advice; I am currently choosing a pump model and hope to select one that is easy to maintain on site.
In terms of complexity, double-suction pumps are certainly more complex than single-suction pumps. Double-suction pumps are generally used in applications requiring high flow rates, while single-stage pumps are usually used for lower flow rates
The current flow rate is 360, and both types of pumps can be used. Do you know which type of pump is easier to repair?
It’s awkward – yours is a single-stage large pump, while mine is a dual-stage small pump. In terms of maintenance, I don’t think there’s much difference; you should consider factors such as energy efficiency, floor space required, and costs instead. Our 600 m3/h dual-stage pump isn’t particularly large either, and basically, maintenance can be carried out by 2 to 3 technicians
Of course, the cantilever pump is simpler. For the double-suction type, if shaft bearings are used, it’s necessary to measure the clearance above and beside the bearings as well as the compression force. There is also an additional step involving the total series value and the individual series values
Double-suction pumps are simpler; a 360-cubic-foot model doesn’t require bearing shells. The only tricky part is that the gaskets need to be made carefully, and special attention must be paid to applying sealant at the areas where the seals are located on both sides! Double-suction pumps have a low speed and good stability, but their cost may be higher!
Cantilever pumps are relatively easier to maintain, and they also have fewer spare parts!
The fitter will tell you: repairing a cantilever pump is simple
It mainly depends on the lifespan of the vulnerable components and the medium that needs to be pumped. In fact, pumps mainly require seal replacement due to leakage. If it is a mechanical seal, the cantilever pump is easier to maintain. If a packing seal is chosen, the split double-suction pump is simpler.
Cantilever pumps are relatively easy to maintain
In a single-stage cantilever pump, if the flow rate is too high, the impeller may become quite large. Pay attention to vibration control. It’s still recommended to use BB2 for this traffic. Of course, it’s definitely easier to maintain a single-stage cantilever pump. In terms of operational stability, BB2 is better.