We have transferred all of our expertise gained in the construction of screws for the coarse and fine ceramics industries to the production of economic hydropower screws.
Klaus Schülein



  • Focus on optimisation and quality
  • Thirtyfive years of industrial expertise
  • Economic concepts and strategies
  • Sound, owner-managed group of companies
  • Network of successful companies
  • Healthy, stable growth
  • At home in international markets









Company headquarters in Ehingen

Conserve resources, reduce downtime, increase machine operation time

Klaus Schülein laid the foundation stone of today’s Rehart Group when he founded Rehart GmbH in 1983. The name REHART is derived from regeneration and hard plating ("Hartplattieren" in German). In the beginning, the company concentrated on the wear protection of machines and plants for the coarse and fine ceramics industries. The goal was to make them durable enough to cope with a demanding life cycle.

Courage to develop new products
This was also linked to the decision to develop new designs, often up to patent application. New processes were also adapted to meet customers' needs. Both have been crucial for the success of the company.

Times are changing, quality remains the same
The group of companies now also includes its own mechanical engineering company for coarse and fine ceramics machines. At its heart is the extruder, the interface between profitability and quality. It is in precisely this area that the company has acquired an enormous wealth of knowledge from the countless installations it has regenerated or built itself. The RehartGroup does not shy away from third-party systems. The optimisation of competitor systems is yet another of the company's strengths, thus keeping in line with the company motto: RehartGroup - ensuring optimum operation.

Interdisciplinary and inter-sectoral
This way of thinking has led to more than a decade of development of hydropower screws. The Design and Engineering Department, experienced in the construction of screws for the ceramics industry and sewage treatment plants, has used this experience and love of detail to develop outstanding hydropower screws.

The business divisions within the Group generally operate independently of each other in the market. In addition to the global coarse and fine ceramics industries, the Group also counts medium-sized companies in a diverse range of industries along with private investors, utility companies and municipalities among its customers.

Case studies

  • Hydropower screw SH, Untermünkheim - Germany
  • Hydropower screw SH, Munich - Germany
  • Fish migration screw FAS in Pilsing, Austria