Function of the Rotor in Eccentric Screw Pumps
Typically shaped like a helical screw, the rotor rotates inside the stator, creating a series of sealed cavities. As it turns eccentrically, these cavities progress along the pump, moving the fluid from the inlet to the outlet with minimal turbulence or pulsation.
The rotor’s design ensures a smooth and continuous flow, even when handling highly viscous or abrasive fluids. Its interaction with the stator forms a seal that is the basis for the pump’s ability to maintain consistent pressure and flow rates.
The tight fit between the rotor and stator is crucial for maintaining the pump’s sealing properties and preventing fluid leakage.
Ensuring proper alignment and seal integrity between the rotor and stator is key to optimising performance and extending the service life of the pump.
Usually, the rotor wears slower than the stator. For fluids that do not contain solid particles, a rotor can easily outlive 3 or 4 stators.
In certain more demanding applications it is preferable to replace both the rotor and the stator at the same time, to ensure optimum performance and avoid premature stator wear as a damaged rotor may cause a poor seal between the rotor and stator, which may allow hard particles in the fluid to escape, resulting in increased wear on the stator.
Choose the rotor material according to your pump application
The rotor is made of metal, whose quality is selected in accordance with the application – steel, various grades of stainless steel, which may be chrome plated.
The rotor is a retrofit part.
SPS supplies rotors suitable for all cases, in steel and various grades of stainless steel, which can be chrome plated, ceramic coated, etc.
Spare Parts for Eccentric Screw Pumps
SPS Pumps maintains a comprehensive inventory of spare parts for all major brands of eccentric screw pumps, ensuring quick and efficient solutions for your maintenance and repair needs. Whether you require stators, rotors, coupling rods, joints, or other critical components, we have them readily available in stock. Minimize downtime and keep your operations running smoothly with SPS Pumps’ extensive spare parts inventory.
All brands are mentioned as for information only.
They are the exclusive property of their respective owners.
SPS Pumps
Your Trusted Partner for Eccentric Screw Pump Solutions
When it comes to eccentric screw pumps (or progressive cavity pumps), whether you’re selecting the right pump or sourcing hard-to-find spare parts, SPS Pumps is your ideal partner.
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Call us at +32 2 657 23 53 or email us at info@sps-pumps.com.
Remember: When it comes to eccentric screw pumps, choose SPS Pumps – your trusted partner for expert guidance, reliable solutions, and outstanding service.
