Rotor Stator Sets

Rotor Stator pumps are progressive cavity pumps - a type of positive displacement pump. They can be used for pumping various viscous and abrasive fluids. 

The fixed stator and the rotating component, the rotor, are the yin and yang of progressive cavity pumps. The rotor is the spiral steel shaft that creates conveying chambers of the inner outline of the rubber tube. Stators are metal tubes with internally molded cavities made of synthetic or natural rubber.

When the rotor is triggered, the conveying chambers move in the direction of flow. This is how the constant flow of material is achieved. The rotor takes a form which resembles a corkscrew, which, combined with the off-center rotary motion, gave its alternative name: eccentric screw pump.

We produced a short animated video to show you the inner workings of progressive cavity pumps:

Size, diameter, grain of the material, and the flow rate you want to achieve.

You will want to choose your rotor stator based on its size and diameter, depending on the grain of your material and your desired flow rate. Different rotor stator pumps suit different materials and purposes and achieves different pumping results. Different flow rates and pressure stabilities are achieved by varying designs of screw pumps.

The shore is very significant: the smaller the number of the shore, the softer the rubber. We recommend a soft rubber if you pump material with sharp aggregates, as they wear out less quickly.  

A harder rubber generates more pressure.

When choosing your optimal shore, consider your working temperature and climate, as rubber softens in heat. Our customers in warmer climates prefer a stator with harder rubber. Similarly, customers in temperate regions alternate shores based on seasonal weather shifts. 

We provide Rotor Stator Pumps for various machines by Putzmeister, PFT, M-Tec, Uelzener, Turbosol, Mai, Utiform, Inotec, Imer, Brinkmann and many more. Many machines use the same rotor stator types. 

For plaster, the most popular pump is the D6-3, which has a solid output of 30 litres per min at 400 rpm. If you need more, you can go with the D8-2, which has more output at 66 litres per minute than any other D-pump.

For floor-screed conveyors like the Putzmeister S5, we recommend the 2L6 or 2L88. These pumps come in different versions. You can opt for either maintenance-free or clampable stators to use an external clamp.