Mersen: A Leading Manufacturer of Slip Rings for AC Electric Motors
Achieving maximum performance from slip ring assemblies requires careful consideration of multiple factors: optimal slip ring design, material selection, excellent mechanical and electrical properties, as well as heat dissipation and cooling.
Globally recognized for its expertise, Mersen’s specialists thoroughly assess your specific needs to design and manufacture solutions that best fit your motors. In addition to manufacturing, we also offer repair and refurbishment services.
All of our slip ring assemblies are manufactured in compliance with international standards (ISO 9001, IEC, NEMA, ASTM, SAE, DIN), using premium-grade materials and undergoing extensive testing throughout the production process, from start to delivery.
Slip Rings for Asynchronous Motors
Electric motors with various slip ring configurations are used across a wide range of industries, with power ratings from just a few kilowatts up to 6 MW. Mersen offers a broad selection of slip ring assemblies for asynchronous motors, along with refurbishment services for damaged ring sets.
Key Features of Mersen Slip Rings:
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Cast or machined rings
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Made from selected materials such as non-ferrous alloys, stainless steel, and copper alloys
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Available with or without grooved profiles
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Custom designs, including 3-phase configurations with integrated grounding rings
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Compliance with international quality standards: roundness checks, dielectric testing
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Manufacturing capabilities up to 460 mm diameter, and voltage range from 220V to 3000VAC
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H/F insulation class
Typical Applications:
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Electric and diesel-electric locomotives
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Oil & gas (compressors)
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Mining (conveyors, hoists, shovels)
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Wire drawing plants (heaters, winders)
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Metallurgy (finishing lines)
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Paper mills (pulpers, grinders, refiners)
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Cement plants (grinders, fans, ground or aerial conveyors)
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Ports and marine (cranes, port equipment)
Mersen slip rings are engineered for durability, precision, and reliable power transfer, ensuring peak performance even in the most demanding industrial environments.
Slip Rings for Hydropower Plants
Mersen has extensive experience in manufacturing slip rings for hydro-generators, with hundreds of sets delivered to OEM partners and motor refurbishment companies worldwide. Our engineering team maintains close, interactive collaboration with OEMs to ensure optimal performance in the design of new slip ring assemblies.
Key Features of Mersen Hydro Slip Rings:
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Manufactured from forged steel, stainless steel, or bronze
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Available in diameters from 600 mm to 2500 mm
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Insulated terminals (copper, bronze, or steel) and spacers
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Support rings / auxiliary shafts (up to 1300 mm in length)
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Complete assembly and finishing operations
Slip Rings for Wind Turbines
Mersen also brings deep expertise in slip ring assemblies for wind generators, having equipped thousands of OEM generators worldwide. In addition to manufacturing, we also offer refurbishment services and retrofit solutions. Our application specialists and engineering teams work closely with clients to add value through enhanced performance and reliability for wind turbines ranging from 850 kW to 9 MW.
Key Features of Mersen Wind Slip Rings:
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Cast or machined ring capability
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Made from selected materials: non-ferrous alloys, stainless steel, copper alloys
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Available with or without spiral grooves
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Custom configurations, including 3-phase sets with integrated grounding rings
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Full compliance of the final product (balancing, dielectric testing)
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Diameter range: 170–360 mm
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Voltage range: 220–3000V AC
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Insulation class H/F
Mersen slip rings for both hydropower and wind energy applications are built to deliver long-lasting, high-efficiency power transfer in demanding environments.
