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Magnetic drive pump bearings
Magnetic drive pump bearings
A major difference between magnetic drive pumps and the conventional style is the location and type of bearings. In conventional pump designs, the bearings are usually located well away from the pumped liquid in a well controlled environment, and the operator has a wide choice of lubricants that can be utilized.
With magnetic drive pumps however, the bearings on the impeller shaft are
lubricated by the pumpage that may not be an appropriate lubricant. In addition,
when the pump runs dry, or operates at very low flows, the lubricant tends to
disappear and the bearings will overheat. More importantly, as the bearings are
usually of the sleeve type with slots or grooves to supply the lubricant to the
bearing running surface, any solids in the pumpage will be detrimental to the
bearing reliability.
Consequently, while the mechanical seal in a conventional pump becomes the first failure point, the bearings in a magnetic drive pump tend to perform the same function.
More products of pumps
Pneumatic and electric diaphragm pumps
2012-08-28
