SUHNER Grinding Technology for Hydropower: Precision and Efficiency

The hydropower industry demands supreme precision, durability and efficiency. SUHNER has established itself as an excellent partner for all grinding processes – from manufacturing and repair to the maintenance of water turbines. SUHNER offers fully customised solutions, a broad product portfolio, practical training and the SUHNER@Work service to guarantee the long-term performance of hydroelectric power plants.

Grinding technology for efficient maintenance of hydropower turbines

Over time, whether Kaplan, Francis or Pelton, all hydropower turbines are subjected to immense stress factors that take their toll on surfaces and lead to wear during operation – be it water pressure, flow vortices or abrasive sediments in run-of-river water. So regular maintenance is essential to ensuring long-term plant performance, and is the only way to avoid power losses and prevent costly breakdowns. The regular maintenance of turbine components guarantees far more than just operational capability, as it has to ensure the long-term cost-effectiveness and sustainability of an entire plant. A key factor in this is surface treatment – by means of grinding. With its headquarters in Lupfig, in the Aargau region of Switzerland, SUHNER is a technology business that over many years has established itself as a reliable partner on the market, spanning all grinding processes – from grinding and deburring to polishing.

Grinding solutions for hydropower turbine repair and refurbishment

SUHNER’s wide product and service range has also been developed to serve the manufacture and maintenance of hydroelectric turbines. Precision grinding machines and abrasives allow metallic surfaces to be machined to the highest quality standards. SUHNER delivers customised solutions to optimise processes and minimise machine downtimes in the fields of manufacturing, repair and maintenance. SUHNER technology is utilised at every stage in the lifecycle of a hydroelectric turbine – for regular maintenance, servicing and repairs. SUHNER places special emphasis on the repair and refurbishment of all types of hydro turbines – particularly Pelton, Francis and Kaplan turbines, while also working with small-scale power stations, too.

Benefits of SUHNER grinding technology for hydropower

• High-precision machining: SUHNER tools and abrasives deliver the accurate results essential for the precise tolerance demands in hydropower technology.
• Long service life: High quality abrasives ensure above-average durability, even with intensive use.
• Efficient maintenance: SUHNER products aid maintenance work to ensure all components operate at their maximum.
• Adaptable systems: The grinding machines can be freely tuned to a variety of requirements, and are ideal for both manufacturing and maintenance.

Training and technical expertise for hydropower maintenance

SUHNER further strengthens its market position by organising regular seminars and events featuring external speakers, presenting practical applications and potential solutions. These practical training courses and seminars are designed to help customers expand and refine their knowledge on many topics – be it crack testing, welding, choosing the right abrasive, or the hazards posed by grinding dust and welding fumes. The solutions offered help hydropower operators gain more knowledge and expertise, while at the same time strengthening trust in SUHNER as a reliable partner for the hydropower sector. The company has the opportunity to showcase its service portfolio, and share a wealth of hands-on knowledge. The next seminar is scheduled for 8 September 2026 at the in-house Application Centre in Lupfig. A particular highlight is the SUHNER@Work service, where grinding machines can be tested on site to demonstrate their quality and practical suitability.

Surface grinding extends the service life of hydropower turbines

The grinding of turbine components is key to ensuring the efficiency and operational reliability of a hydroelectric power plant. Constant exposure to water and suspended solids causes material damage, particularly abrasion. Skilled grinding smooths surfaces again to restore optimum conditions and ensure the machine’s best performance.

Key advantages of precision grinding

• Improved surface quality reduces friction and minimises turbulence
• Increased and optimised water flow efficiency boosts output and energy yield
• Service life of components is extended by timely machining
• Major damage prevention minimises downtime

SUHNER grinding solutions for the complete hydropower lifecycle

SUHNER grinding solutions serve the full lifecycle of a hydroelectric turbine. Precise and uniform surface finishing is essential for efficient long-term operation in all power stations with Pelton or Kaplan turbine installations.

The product range comprises a wide spectrum of grinding tools, grinding machines and abrasive materials, and includes high-performance grinders, belts, pins, pastes and logistics solutions for consumables. Careful maintenance, which includes grinding, protects a hydroelectric power plant’s technical infrastructure and enhances the cost-effectiveness and sustainability of every operation.

More at: www.suhner.com