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Spare Parts - Rotor
The rotor is the hardest-working part of a progressive cavity pump. Choose it by your material: stainless steel for unfilled materials up to a specific gravity of 1.79, tungsten carbide for dense or abrasive filled materials from SG 1.8 to 10. On abrasive materials, tungsten carbide rotors last up to 24 months, and a pump rebuild takes under an hour.
Compare models
| Rotor | Specific gravity | Use for |
|---|---|---|
| Stainless steel | 0 – 1.79 | Unfilled adhesives, silicones, urethanes |
| Tungsten carbide | 1.8 – 10 | Filled and abrasive materials: alumina, silica, thermal gap fillers |
| Ceramic (PCP-150MF / PCP-500MF) | — | Anaerobics, cyanoacrylates, acids and alkalis: no metal in the wetted path |
Frequently asked questions
How often do I replace parts?
On abrasive materials, plan on a stator every 6 to 12 months and a tungsten carbide rotor up to every 24 months.
Do I replace the stator with the rotor?
Usually the stator wears first. Replace both if the rotor shows wear.
Which rotor do I need for anaerobics or cyanoacrylates?
Neither stainless nor carbide: these materials react with metal. Use the PCP-150MF or PCP-500MF, which has a ceramic rotor and a PEEK chamber so the material touches no metal.
Not sure which one fits? Send us your material data sheet and what you need to dispense. Contact us
Related: Stators · Filled material dispensing