​Kaplan Turbines

​Kaplan turbines are characterized by a large operating range and enable a highly efficient utilization of the water supply, particularly with low heads. Kochendörfer Kaplan turbines are among the most powerful machine sets thanks to their sophisticated and robust design and recognized peak efficiency levels of up to 95%. Kochendörfer produces various types of Kaplan turbines in a vertical or horizontal design.

Kaplan Turbines

We produce Kaplan turbines as vertical machines with concrete or steel spiral turbines as well as horizontal Kaplan spiral turbines with 4, 5 or 6 blades.

The impeller blades are made of high-strength chrome-nickel steel alloys in stainless design and are milled true to line on modern CNC machines. The impeller hub can be supplied environmentally friendly in an oil-free version if required.

We use rolling bearings, water-lubricated or oil-lubricated bearings as turbine guide bearing. 

We are very familiar with optimal and durable sealing systems and these are used in such a way as to suit application.

​Kaplan Bulb Turbines

Kaplan bulb turbines are built at Kochendörfer as horizontal or vertical machines and coupled directly or via a belt drive or gearbox to the generator.

In addition to optimally designed impellers in 4-, 5- or 6-blade design and optionally oil-free hub, the robust and maintenance-free design of the guide device is among the quality characteristics.

Design and manufacturing 

  • Design with 3D CAD software based on model tests
  • CAM programming for full 3D production
  • CNC production of impeller blades etc.
  • Permanent quality control according to standardized test plans
  • Non-destructive material tests (MT, PT, etc.) by independent testing institutes
Large impeller diameter
Impeller diameter up to 4.50m
Factory assembly guide vane mechanism
Shop assembly guide device
CNC finish machining
CNC finishing impeller
Impeller small Kaplan turbine
Impeller for small Kaplan turbines
Kaplan turbine quality management
Quality controls on an impeller hub
CNC machining impeller chamber
CNC machining impeller chamber

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