Rotor & stator.The heart of every mixing pump.

Rotor and stator decide how much material reaches the wall per minute — and when the machine stops. We make them under our own brand and keep the common sizes in stock in Lübeck, Germany.

19pump sizes

8 / 7D / R pumps

24 hquote

Find your size Send a photo, we check it

Every pump size at a glance

The designation is printed on your worn part, for example D6-3. Design and direction of rotation decide the rest. The right-hand column shows which machines run this size.

Pump size	Design	Rotation	Available parts	Runs in	Availability
2L	—	counter-clockwise	2× stator	PlasterOne® No.1, PFT G4, PFT G5, PFT Ritmo, Putzmeister MP 25	on request	Request
2L6	clamped maintenance-free	on request	2× stator	PlasterOne® No.1	on request	Request
5L	—	on request	2× stator	PlasterOne® No.1, PFT Ritmo	on request	Request
8L	—	on request	1× stator	PlasterOne® No.1, Uelzener	on request	Request
D3-4	—	on request	1× stator	PFT G4, PFT Ritmo	on request	Request
D4-2	—	on request	1× rotor	PFT G4, PFT Ritmo	on request	Request
D4-3	—	on request	6× stator	PlasterOne® No.1, PFT G4, PFT G5, PFT Ritmo, Putzmeister MP 25, Uelzener	on request	Request
D5-2,5	—	on request	2× rotor	PFT G4, PFT Ritmo, Putzmeister MP 25	on request	Request
D6-3	—	clockwise	8× stator	PlasterOne® No.1, PFT G4, PFT G5, PFT Ritmo, Putzmeister MP 25	in stock	Request
D7-2,5	clamped	on request	6× stator	PlasterOne® No.1, PFT G4, Putzmeister MP 25, Uelzener	in stock	Request
D8-1,5	clamped SOFT	on request	11× stator	PlasterOne® No.1, PFT G4, PFT G5, PFT Ritmo, Putzmeister MP 25, Putzmeister S5, Uelzener	on request	Request
D8-2	—	on request	2× rotor · 4× stator	PlasterOne® No.1, PFT G4, PFT G5, PFT Ritmo, Putzmeister MP 25, Uelzener	on request	Request
R7-1,5	—	on request	1× rotor	PFT G4, PFT Ritmo	on request	Request
R7-2,5	—	on request	1× rotor	PlasterOne® No.1	on request	Request
R7-3	slotted clamped	on request	3× stator	PlasterOne® No.1, PFT G4, PFT G5	on request	Request
R8-1,5	slotted	on request	1× rotor · 1× stator	PlasterOne® No.1, PFT G4, PFT Ritmo, PFT ZP 3, Putzmeister MP 25	on request	Request
R8-2	slotted	on request	1× rotor · 1× stator	PFT ZP 3, Uelzener	on request	Request
R9-1	—	on request	1× rotor	PlasterOne® No.1, PFT ZP 3	on request	Request
R9-1,5	—	clockwise	1× rotor	PFT G4, PFT G5, PFT Ritmo	on request	Request

Clamped, maintenance-free or SOFT

The design decides how long a stator lasts and how easily it is replaced on site. No single design is right for every job.

Clamped

Can be re-tightened with the clamp when output drops. Replacement without special tools.

Useful forchanging materials and long hose runs

Maintenance-free

Works without a clamp and is not re-tightened. Fewer steps on site, but no way to readjust.

Useful forconsistent material and short distances

SOFT

Softer jacket, builds less back pressure. More sensitive to long runs and high pressure.

Useful forfine materials and short hose runs

Before you order

The four points that cause most wrong orders in practice.

What matters

Check the rotation. Rotors come clockwise and counter-clockwise. Same size does not mean same rotation.
Rotor head and flange. Two pumps with similar output are not interchangeable if the rotor head or the mounting flange differs.
Suction flange on R pumps. Switching from a D pump to an R pump needs a separate suction flange on many machines.
Filters first, stator second. Dropping output often comes from clogged filters or material mixed too stiff, not from wear.

The machine behind the parts

We make these parts for our own machine.

The PlasterOne® No.1 is our plastering machine from Lübeck, Germany: a mixing pump with a built-in air compressor and water pump. It runs on exactly these D and R pump systems. That is why we know these parts from daily use, not from a catalogue.

3–85l/min

80 mscreed

6.0 kW400 V

150 lhopper

See the No.1 All machines

Frequently asked

Which rotor and stator fits my machine?

What matters is the pump size printed on the worn part, for example D6-3 or R7-1.5, plus the design and the direction of rotation. If in doubt, send us a photo of the worn part or of the type plate and we will tell you what fits.

What is the difference between clamped and maintenance-free?

A clamped stator can be re-tightened when output drops. That extends its working life and makes replacement easier. A maintenance-free stator is not re-tightened and works without clamps.

How do I know the stator is worn out?

Output drops at the same speed, pressure builds up more slowly, material arrives in surges instead of a steady flow. Check the filters first and whether the material is mixed too stiff — both cause the same symptoms.

How long does a rotor and stator pair last?

That depends heavily on the material and varies a lot in practice. Blanket figures would be misleading. What matters: type and grain of the material, hose length and the resulting back pressure, speed, cleaning, and whether the pump ever ran dry.

Do I always have to replace rotor and stator together?

Not strictly, but usually it makes sense. A new rotor in a worn stator builds hardly any pressure, and a new stator wears faster against a worn rotor. We advise you on what is enough in your case.

Do you ship internationally?

Yes, worldwide from Lübeck, Germany, with a focus on Europe, Turkey, the Gulf states and South East Asia. Advance payment, invoice within the EU, letter of credit for export.

Request a pump size

Tell us what is written on the worn part. You get a quote within 24 hours, free and without obligation.

Worldwide shipping from Lübeck, Germany
Payment: advance payment, invoice within the EU, letter of credit for export

Third-party brand names in the „Runs in“ column are used solely to indicate which machines our parts are intended for. There is no business relationship with those manufacturers. We do not supply their original parts, but our own PlasterOne® products.