The Stator of a Progressive Cavity Pump
The stator is the most frequently replaced part.
It wears naturally owing to the constant friction caused by the rotation of the spindle.
Its replacement frequency depends on the type of fluid being pumped.
The Rotor of a Progressive Cavity Pump
The spindle/helical rotor is made of metal, whose quality is selected in accordance with the application,
i.e.steel and various grades of stainless steel, which may be chrome plated.
The rotor is also a retrofit part.
It wears out somewhat slower than the stator, but in certain cases,
it is by far more preferable to change both the rotor and the stator at the same time,
in order to guarantee optimal performance and avoid premature wear on the stator.
This is potentially caused by a defective seal between the rotor and the stator, which risks leaking hard particles found in the fluid that result in greater wear on the stator.
The Coupling Parts of a Progressive Cavity Pump
The rotor is connected to the motor by a connecting rod, which in turn is connected to an axle.
All of these mechanical components are found in the pump’s suction housing.
The mechanical connection parts are also retrofit parts and have to be replaced at regular intervals.
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