NEMO® progressing cavity pumps


1 Rotor

In wear and corrosion resistant design, including the wear-free ceramic rotor, NEMO CERATEC®.

2 Stator

We manufacture stators to the latest standards. Stators minimise the tolerance range thereby optimising the performance of the pump. Our unique,fully networked production and process data monitoring system, developed in-house, is backed up by consistent quality testing.

We offer you 2 types of stators:

2.1 Stator with conventional technology

Vulcanised into a tube, with integrated seals on both ends in a variety of NEMOLAST® elastomers, plastics or metals. Stator inlet with chamfer to facilitate the entry of the fluid into the conveying chamber.

2.2. Stator with iFD Technology

The stator consists of a disposable elastomer part and an aluminium outer sleeve in which the NEMOLAST® elastomer is housed. The advantages of this new technology are the reduced starting torque, the higher degree of efficiency, longer lifetime, simple and quick change as well as the easy disposal.

3 Drive chain

Plug in shaft with coupling rod and two universal joints for power transmission from the drive to the rotor.

The joints are available in various versions, some of them patented by NETZSCH:

B Universal Pin Joint

The NEMO® universal pin joint is the standard joint for NEMO® industrial pumps because of its simple design and outstanding reliability. To achieve a long service life, the joint is oil filled and sealed by the NEMO® SM® seal. The joint can also be used without seal in case of extremely high temperatures and products where elastomers are not suitable. The joint consists of a minimum number of parts that enables simple dismantling for maintenance.

V Pin Joint

The operational characteristics of the NEMO® V pin joint are similar to those of the B pin joint. For longer service life in difficult applications they are strengthened by hardened bushings fitted into boreholes in the coupling rod and the rotor/drive shaft head. The V pin joints with hardened bushes are easy to remove for maintenance purposes.

H Hygienic Pin Joint

The open, patented pin joint was designed specifically for use in hygienic pumps. It is crevice and dead space free, polished and, therefore, easy to clean. The joint is made in accordance with US 3-A Sanitary Standards.

F NEMO Flextec Flexible Rod

The flexible rod is wear- and maintenance free because there are no components moving against each other as in other joint types. Neither lubrication nor seals are required. Therefore, the flexible rod is suitable for high pressures and temperatures. The flexible rod is also free from crevices and dead spaces which allows it to be used for pumping highly sensitive products in aseptic conditions. It is designed in accordance to the US 3-A Sanitary Standards.

K Joint

The patented K joint was designed for extremely arduous industrial applications involving constant pump running, frequent stop/starts or shock loads. It is kinematically designed so that the torque and axial loads are borne by separate elements within the joint. The joint is oil filled and hermetically sealed by two seals which are resistant  (compatible) against the lubricant and the pumped product. Filling the space between the two seals with oil allows the use of the joints at pressures up to 12 bar (170 psi).

Z Double Seal Pivot Joint

For the largest flows and pressures possible with NEMO® pumps where the torques and axial loads are at their highest (in bearing housing size NM 125SY and above) the pumps are fitted as standard with a cartridge type precision pivot joint. The joint is oil filled, hermetically sealed by two seals which are resistant (compatible) against the lubricant and the pumped product. It is suitable for continuous operation.