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We offer reliable International Shipping, ensuring your orders arrive safely. See our Shipping Policy

We offer reliable International Shipping, ensuring your orders arrive safely. See our Shipping Policy

We offer reliable International Shipping, ensuring your orders arrive safely. See our Shipping Policy

We offer reliable International Shipping, ensuring your orders arrive safely. See our Shipping Policy

Rotor and Stator (Screw Pumps)

 

Rotor Stator Pump FAQs

1. What are rotor stator pumps, and how do they work? 

Rotor stator pumps, also known as progressive cavity pumps or eccentric screw pumps, are a type of positive displacement pump designed for efficiently transferring viscous and abrasive fluids.

These pumps consist of two key components:

  • Rotor: A spiral-shaped steel shaft that rotates inside the stator.

  • Stator: A metal tube with an internally molded cavity, typically made from synthetic or natural rubber, that matches the shape of the rotor.

As the rotor turns, it creates enclosed conveying chambers with the stator. These chambers move continuously in the direction of the flow, ensuring a consistent, low-pulsation transfer of materials. The rotor's corkscrew shape and off-center rotary motion are what give this pump its alternative name, the eccentric screw pump.

This design allows for gentle handling of sensitive materials while maintaining a steady and efficient pumping process, making rotor stator pumps a preferred choice for demanding applications.

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

2. What are rotor stator pumps used for?

Rotor stator pumps are versatile and used across various industries due to their ability to handle a wide range of materials. Our line of rotor stators is primarily designed for Construction and Refractory applications. Putzparts specializes in rotor stators designed for pumping liquid screed, mortar, grout, gypcrete (self levelling underlayment), plaster/stucco and fireproofing cement, ensuring efficient and reliable material transport on construction sites. 3D Concrete Printing is a new and exciting industry that values progressive cavity pumps for their continuous flow. 

3. What are the relevant factors when choosing the rotor stator?

Selecting the right rotor stator is crucial for achieving optimal performance and efficiency. Key factors to consider include:

  • Size and Diameter: The dimensions of the rotor and stator must align with the type and volume of material being pumped. 

  • Material Grain Size: Coarser materials require larger diameters to prevent clogging and ensure a steady flow.

  • Desired Flow Rate: The pump's design should match the required flow rate for the application.

  • Pressure Stability: Different rotor stator designs influence how stable the pressure remains during operation, impacting the final pumping results.

Choosing the correct rotor stator ensures efficient pumping, reduces wear, and extends the pump's lifespan. For specialized applications, it's essential to consult with experts to match the right pump design with the material properties and operational requirements.

4. Maintenance-free or clampable rotor stators?

  • Maintenance-Free: Easy to install, with unslotted steel tubes ensuring consistent pressure and minimal maintenance.

  • Clampable: Adjustable for material type and grain size. Available with built-in or external clamps. Requires retightening when delivery pressure drops.

Both types support smooth, continuous pumping with minimal pulsation. The best choice depends on operational flexibility and material handling needs.

5. How to choose the right rubber for your stator?

The shore value indicates rubber hardness. Lower shore numbers mean softer rubber, which is ideal for pumping materials with sharp aggregates as it reduces wear. Harder rubber, with higher shore values, generates more pressure.

Considerations when selecting shore hardness:

  • Material Type: Softer rubber is better for abrasive materials.

  • Working Temperature and Climate: Rubber softens in heat. In warmer climates, harder rubber is preferred, while temperate regions may require alternating shore hardness based on seasonal changes.

Selecting the correct shore ensures durability, optimal pressure, and efficient material handling.

6. Does Putzparts supply high-quality rotor stator pumps?

Yes, Putzparts provides mostly premium-quality rotor stators, proudly made in Germany. Our rotors are crafted from high-alloy steel, never hollow, and precisely drilled for enhanced durability. The stators are made from high-endurance rubber, ensuring long-lasting, reliable performance and consistent pumping results.

This combination of precision engineering and high-quality materials guarantees dependable operation, reduced wear, and optimal efficiency in every application.

7. Can I use the pumps for different machines?

Yes, Putzparts supplies rotor stator pumps compatible with various machine brands, including Putzmeister, PFT, M-Tec, Uelzener, Turbosol, Mai, Utiform, Inotec, Imer, Brinkmann, and many more. Many machines utilize the same rotor stator types for efficiency. Different brands may require different rotor head designs. 

8. I can’t find the rotor stator I’m looking for. Can you supply different types?

Most likely, yes. We offer an extensive selection of rotor stator pumps in our shop and can provide custom series in nearly any stator size at optimal costs.

If you need assistance in finding the right product or require a custom solution, feel free to contact us. We respond promptly to inquiries and provide tailored solutions to meet your specific requirements.

R8-3 Rotor Stator Set

Original price €478,00 - Original price €478,00
Original price
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€478,00 - €478,00
Current price €478,00

The rotor stator R8-3 set. Made in Germany. Technical information about the R8-3 set Stator Diameter: 114.5 mm Stator Length: 545 mm Rubber Qua...

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R7-1.5 Rotor Stator Set

Original price €248,00 - Original price €248,00
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€248,00 - €248,00
Current price €248,00

Rotor Stator Set R7-1.5 (R7-1,5) is a pump used for screeding and shotcrete.  Made in Germany. Technical information about the R7-1.5 set Stator ...

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R8-1.5 Rotor Stator Set

Original price €266,00 - Original price €266,00
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€266,00 - €266,00
Current price €266,00

 Rotor Stator Set R8-1.5 (R8-1,5). Made in Germany. Technical information about the R8-1.5 set Stator Diameter: 114.3 mm Stator Length: 270 mm ...

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UE 45/7 Rotor Stator Set

Original price €224,00 - Original price €224,00
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€224,00 - €224,00
Current price €224,00

The rotor stator set UE 45/7 (Ü45/7) is used for shotcrete and screed. Applications of the UE 45/7 The rotor stator pump UE 45/7 is popular with va...

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UE 355 Rotor Stator Set

Original price €438,00 - Original price €438,00
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€438,00 - €438,00
Current price €438,00

Rotor Stator Set UE 355 (Ü355) is a popular rotor stator pump for shotcrete and screed. Made in Germany. Technical information about the UE 355 set...

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UE 356 Rotor Stator Set

Original price €478,00 - Original price €478,00
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€478,00 - €478,00
Current price €478,00

The rotor stator set UE 356 (Ü356) is also known as the Mirage. This pump is similar to the UE 355 as the stator has the same diameter but is 535mm...

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UE 356-0.75 Rotor Stator Set

Original price €438,00 - Original price €438,00
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€438,00 - €438,00
Current price €438,00

The rotor stator set UE3 56-0.75 (Ü356-0,75).  Made in Germany. Technical information about the UE 356-0.75 set Stator Diameter: 127 mm Stator L...

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2L54 Rotor Stator Set

Original price €476,00 - Original price €476,00
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€476,00 - €476,00
Current price €476,00

Made in Germany. Technical information about the 2L54 set Stator Diameter: 127 mm Stator length: 535 mm Rubber quality: 73 Shore Max. grain ...

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2L74 / 60-12 Rotor Stator Set

Original price €526,90 - Original price €526,90
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€526,90 - €526,90
Current price €526,90

The 2L74 rotor stator set is also called the 60-12 rotor stator set and the Fighter.  Made in Germany. Technical information about the 2L74 set St...

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1.5L71 Rotor Stator Set

Original price €472,00 - Original price €472,00
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€472,00 - €472,00
Current price €472,00

1.5L71 rotor stator set.  Made in Germany. Technical information about the 1.5L71 set Stator Diameter: 146 mm Stator length: 535 mm Rubber quali...

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2L75 Rotor Stator Set

Original price €486,00 - Original price €486,00
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€486,00 - €486,00
Current price €486,00

The 2L75 rotor stator set. Made in Germany. Technical information about the 2L75 set Stator Diameter: 127 mm Stator Length: 665 mm Rubber Qualit...

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2L7 Rotor Stator Set

Original price €488,00 - Original price €488,00
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€488,00 - €488,00
Current price €488,00

The 2L7 stator can be used for the Bosch Pump. This stator is also a Putzmeister spare part.  Made in Germany. Technical information about the 2L7 ...

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Estrichstar Rotor Stator Set

Original price €478,00 - Original price €478,00
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€478,00 - €478,00
Current price €478,00

The Estrichstar is a rotor stator pump for M-Tec silos. Fields of application: The Estrichstar is a rotor stator pump for M-Tec silos. Made in Ge...

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Betonstar 2 Rotor Stator Set

Original price €468,00 - Original price €468,00
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€468,00 - €468,00
Current price €468,00

The Betonstar is also known as Betonstar II and Magnum Pump.  Alternative names for this rotor stator set: Betonstar II and Magnum Made in Germany....

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1.5L8 Rotor Stator Set

Original price €816,00 - Original price €816,00
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€816,00 - €816,00
Current price €816,00

1.5L8 rotor stator set. This may also go by 1,5L8 or Cobra 1. Made in Germany. Technical information about the 1.5L8 set Stator Diameter: 193 mm ...

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2L8 Rotor Stator Set

Original price €816,00 - Original price €816,00
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€816,00 - €816,00
Current price €816,00

2L8 rotor stator set also goes by the name Cobra 2. This is our largest pump used for pumping concrete with heavy-duty machines. Made in Germany. T...

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75.15 (7515) Rotor Stator Set

Original price €496,00 - Original price €554,00
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€496,00 - €554,00
Current price €496,00

75.15 rotor stator set.  Alternative names: 7515, 75-15, 1.5L7, Tornado Machines: Bremat, Overmat, Mixmobil, Glaap Brinkmann, BMS, Putzmeister SP25...

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Rotor/StatorD4 FH Set

Original price €129,00 - Original price €129,00
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€129,00 - €129,00
Current price €129,00

Stator and Rotor Throughput (l/min) at 400RPM: 60 Grain Size (mm): 5 Application Fields: groove-grated renders, smooth-grated renders and ...

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Speedy MP Rotor Stator Pump Set

Original price €224,80 - Original price €224,80
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€224,80 - €224,80
Current price €224,80

This is the original Speedy MP rotor stator pump. It provides a very precise result and allows for a very fast and comfortable work.

T9-2 Rotor Stator Set

Original price €652,00 - Original price €652,00
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€652,00 - €652,00
Current price €652,00

This rotor stator set is the T9-2. Made in Germany. Technical Information About the T9-2 Set  Stator Diameter: 127 mm Stator Length: 665 mm Rub...

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6012 Plus 146 Green Rotor Stator Set

Original price €678,30 - Original price €678,30
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€678,30 - €678,30
Current price €678,30

The rotor stator is the 6012 Plus 146 Green.  Made in Germany. Technical Information About the 6012 Plus 146 Green Set Stator Diameter: 146 mm St...

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6012 Plus 146 Yellow Rotor Stator Set

Original price €628,30 - Original price €628,30
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€628,30 - €628,30
Current price €628,30

The rotor stator is the 6012 Plus 146 Yellow.  Made in Germany. Technical Information About the 6012 Plus 146 Yellow Set Stator Diameter: 146 mm ...

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6012 Plus 159 White Rotor Stator Set

Original price €734,80 - Original price €734,80
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€734,80 - €734,80
Current price €734,80

  The rotor stator is the 6012 Plus 159 White.  Made in Germany. Technical Information About the 6012 Plus 159 White Set Stator Diameter: 159 mm ...

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Stator 6012 Plus 159 White

Original price €326,40 - Original price €326,40
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€326,40 - €326,40
Current price €326,40

The stator for the 6012 Plus 159 White Screw Pump.  Made in Germany. Technical Information About the 6012 Plus 159 White Stator Stator Diameter: ...

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YOU HAVE A QUESTION?

Contact us

Write to us if you have any questions or inquiries. We are also happy to assist you with technical questions.

info@putzparts24.de

+49 (0) 30 30807300