Water &
Sewage Industry

Gearboxes &
Geared Motors for
the Water & Sewage Industry

The water and wastewater industry is faced with the challenge of treating large quantities of water and liquids and enriching the water with oxygen. In order to ensure a smooth and reliable process in water and wastewater applications, high demands are placed on a gear unit.

Due to many years of experience in the development, production and assembly of gear units and geared motors, Premium Stephan Hameln meets a wide range of customer requirements combined with a high quality standard. A high degree of efficiency and a very low noise level are characteristic of the products we supply.

We provide you with various solutions for water and waste water treatment. Whether for the transport of large quantities of liquids or for the enrichment of water with oxygen. We are proud to be able to make a small contribution to environmental protection by selling gear units and motors for the water and waste water sector. Further down on this page you will find a few examples of applications for our high-quality products. If you do not find what you are looking for in the applications listed below, please do not hesitate to contact us. We will design a gearbox or a geared motor for you that is completely tailored to your needs.


Water & Sewage


Surface aerators are units for mixing and aerating standing water. The purpose of aeration is to supply the microorganisms living in the water with oxygen. Centrifugal aerators or roller aerators are used for this purpose. Surface aerators are mainly found in sewage treatment plants, where they supply the bacteria in the aeration tanks with air and oxygen. Surface aerators with drives from Premium Stephan are also used in aquaculture such as shrimp farming.


Screw conveyors consist of a stationary trough as supporting element and a driven screw shaft as pushing element. The worm shaft is usually supported separately by fixed or track bearings and a floating bearing. For very long versions, the worm shaft is also equipped with an intermediate bearing. Depending on the performance requirements, different gear concepts are selected for the drive. Premium Stephan offers efficient gearboxes in hollow and solid shaft versions, as parallel shaft or inline and bevel gear versions for every application. Whether horizontal or inclined conveyors, whether indoor or outdoor, you will find Premium Stephan gearboxes in all these applications.


Deep aerators with underwater drive are used to generate a horizontal flow of wastewater in the sewage basin. The microorganisms living in the water are supplied with air via pipes. The flow ensures soft mixing and prevents solid particles from settling at the bottom of the basin. The discharge of aerosols at the water surface is also avoided in this way. Coaxial helical gear units from Premium Stephan are used in large numbers to drive these deep aerators. 



Vertical deep aerators are used for aeration of deep water basins. The mixer and drive are connected by a shaft, the length of which is adapted to the depth of the basin. Air and thus oxygen is supplied to the water at the bottom of the pool via pipe. Due to this design, the drive is located outside the water and is easily accessible for maintenance purposes. Flat geared motors from Premium Stephan are used in many countries as drives for deep aerators.

Process & Applications

Bucket Elevator
Crepe Machine
Slab Cutter machine
Bail Press Machine
Banbury Mixer
Mixing & Kneading Mill
Strainer Extruder
Solution Churner
Strainer Extruder
Rubber Extruder
Tyre Building
Tyre Curing Press
Rubber Reclaim Machine
Pre - Refiner/ Refiner
Breaker Mill
Main Hoist
Auxilliary Hoist
Long Travel
Cross Travel
Transfer Trolley Car
Level Luff Crane
Bridge Travel


Bevel Helical Geard Motor
Geard Motors
Special Helical
Crane Duty