CEM – Progressive cavity pumps


Construction features:
Pump body:
SBR: Bronze
SBX: Stainless steel AISI 316
Rotor: Stainless steel AISI 316
Stainless steel AISI 316
AISI 316 Stainless steel
Mechanical seal:
ceramics-graphite-NBR (special corrosion resistant)

This item is made to order and can take between 2-4 weeks before delivery



CEM electric Progressive cavity pumps or single screw self-priming pump made in BRONZE (SBR) and STAINLESS STEEL AISI 316 (SBX) equipped with a single screw made in stainless steel AISI 316 that running inside an NBR rubber stator. These pumps are widely used in the nautical sector to emptying the waste tanks, toilet, sewage, and particularly viscous liquids with small solid bodies in suspension

 A screw pump is a positive-displacement (PD) pump that use one or several screws to move fluids or solids along the screw axis. In its simplest form (the Archimedes’ screw pump), a single screw rotates in a cylindrical cavity, thereby moving the material along the screw’s spindle

This ancient construction is still used in many low-tech applications, such as irrigation systems and in agricultural machinery for transporting grain and other solids

CEM Progressive cavity pumps Technical
Image showing CEM SBR and SBX pumps Technical data

Direct current: 

  • Permanent magnet electric motor 12/24V DC
  • Protection IP44
  • Insulation Class F
  • Continuous Duty (S1)

Alternating current:

  • Induction electric motor
    • 110V single-phase (available on request)
    • 230V single-phase
    • 230~400VAC Three-phase
    • 400~690VAC Three Phase
  • Protection IP44/55
  • Insulation Class F
  • Continuous Duty (S1)

The scope of operation: Liquids with small solid bodies in suspension
Temperature range of the liquid: from +0 to +70 °C
Max. suction depth: 6 m
Static pressure inside the pump body: 6 bar max

Additional information


12V DC, 24V DC, 230V, 230~400V

Max Delivery

30l/min, 40l/min, 50l/min, 55l/min, 65l/min, 116l/min, 185l/min, 292l/min

Motor Power

0.55kW, 1.1kW, 1.5kW, 2.2kW, 4kW

Max Head

30m, 40m, 50m, 55m

Head Construction

Bronze, 316 Stainless Steel

About CEM

About CEM Pumps and Blowers

Established in 1970 C.E.M. elettromeccanica S.r.l. has been a leading manufacturer of electric pumps and DC motors primarily focussed for use in the maritime sector
In the 48 years we have been making motors and our constant expansion in the national and the international markets have resulted in the broadening of our extensive product range

highest quality materials

This makes us the ideal partner for large and medium-sized boat builders of pleasure, fishing and military vessels.
Our extensive range now includes:

  • DC and AC electric pumps
  • Belt driven pumps, with manual or electro magnetic clutch
  • hydraulically driven pumps
  • water pressure systems
  • centrifugal and axial blowers
  • diesel driven pumps
  • manual pumps
  • DC motors

Our commitment to using the highest quality materials used, the special care invested in the design and in the innovative production processes we adopt, we are able to offer excellent performances and a remarkable lifespan of our products exactly what you need when our product can offer extra hours of safety when in difficulty
All of our products are built to standards that are in accordance with classification and certification can be obtained from each of the bodies: Bureau Veritas, Det Norske Veritas (DNV), Lloyd’s Register and RINA