Driven by the global energy transition and carbon neutrality goals, the energy storage power conversion system (PCS), as the core hub connecting battery packs to the grid, serves as the "super brain" ensuring efficient power conversion and stable output. The internal space of PCS is confined with limited heat dissipation conditions, requiring its core transmission bearings to maintain absolute dimensional stability and high-precision operation in a 150℃ high-temperature environment. However, traditional bearings are highly susceptible to material softening and grease carbonization/loss under continuous high-temperature conditions, leading to operational jamming and decreased power conversion efficiency. New energy equipment manufacturers urgently need support bearings customized for energy storage conditions, featuring ultimate high-temperature resistance, high precision, and low-noise characteristics.

Facing the stringent energy storage industry standards for "high power conversion efficiency" and "high reliability," support systems must not only possess excellent high-temperature load-bearing capabilities but also maintain ultra-low friction loss and operational noise during long-term continuous operation. Due to the easy volatilization and drying of ordinary greases at high temperatures, and the thermal deformation of cages, traditional bearings directly lead to a surge in internal friction, severe heating, and even equipment shutdown. The market urgently demands an energy storage converter dedicated bearing solution that can break through the dual bottlenecks of high-temperature thermal degradation and friction loss, achieving full life-cycle high-reliability operation and providing solid protection for the stable operation of the new energy grid.

NMT Energy Storage Converter Bearings are born to conquer the ultimate transmission challenges in high-temperature, confined spaces. This series achieves disruptive breakthroughs in materials science and thermodynamic design. For high-temperature resistance and high precision, NMT selects special high-temperature resistant bearing steel, treated with solution strengthening and secondary hardening heat treatment processes, ensuring excellent hardness and toughness at 150℃. Meanwhile, high-purity high-carbon chromium bearing steel is used, combined with double vacuum melting, ultra-precision machining, and precise zero-clearance preload technology to significantly enhance rigidity and positioning accuracy, effectively ensuring power conversion efficiency. For low noise and long life, NMT employs a streamlined cage design, paired with nanometer-level polished rolling elements and exclusive high-temperature resistant long-life synthetic grease for energy storage. Test data shows that NMT converter bearings operate at noise levels below 20 decibels, with a lubrication life of over 12,000 hours.

In precision manufacturing and quality control, NMT enforces stringent standards for every component of its energy storage bearings. Through high-temperature resistant material modification, zero-clearance preload technology, and full-process quality control, the high-temperature adaptability and high-precision performance of the bearings are comprehensively improved. NMT ensures that each bearing maintains ultra-low friction loss and extremely high operational smoothness under the extreme high-temperature conditions of energy storage converters, avoiding power conversion efficiency degradation, guaranteeing high consistency and high reliability of batch products, and completely eliminating operational hazards of new energy equipment.

With rich specifications, these bearings are widely used in core transmission nodes of energy storage converters (PCS), new energy inverters, integrated photovoltaic energy storage equipment, and high-power-density power electronics transmission nodes, satisfying the supporting needs of various high-temperature resistant, high-precision, low-noise, and long-life transmission nodes.

Core Product Advantages

Core rings and rolling elements use special high-temperature resistant bearing steel, treated with solution strengthening and secondary hardening heat treatment, maintaining excellent hardness and toughness at 150℃, avoiding material softening and thermal deformation;

High-purity high-carbon chromium bearing steel is used, removing internal impurities through double vacuum melting, combined with ultra-precision machining and zero-clearance preload technology to significantly enhance rigidity and positioning accuracy, ensuring power conversion efficiency;

Innovative streamlined cage design significantly reduces friction impact between the cage, rolling elements, and rings, physically lowering the noise source and ensuring ultimate quietness inside the converter;

Rolling elements and raceways undergo nanometer-level polishing, paired with exclusive high-temperature resistant long-life synthetic grease for energy storage. With an extremely low friction coefficient, operational noise is below 20 decibels, and lubrication life reaches over 12,000 hours;

Thin-wall bearing structure optimization reduces volume and weight while ensuring load capacity, increasing heat dissipation area, effectively solving the pain point of limited heat dissipation in the confined space of energy storage converters;

Dual-seal protection system (outer high-temperature resistant FKM contact seal + inner labyrinth seal) effectively blocks dust and moisture intrusion while preventing internal grease leakage, adapting to complex conditions;

Full life-cycle high-reliability design significantly reduces downtime maintenance frequency for energy storage stations, ensuring efficient, safe, and continuous operation of the new energy grid;

Full-process high-precision quality control and 100% high-temperature resistance and low-noise full inspection ensure precise dimensions, zero high-temperature jamming, and zero precision drift risks for each bearing in converters.

Typical Application Scenarios

Core transmission nodes of energy storage converters (PCS) and new energy inverters; Integrated photovoltaic energy storage equipment and wind power converters; High-power-density power electronics transmission nodes; Core cooling and transmission systems of energy storage stations.

Precision Quality Assurance

NMT Energy Storage Converter Bearings use special high-temperature resistant bearing steel and high-purity high-carbon chromium bearing steel as core raw materials, subject to strict material purity and high-temperature resistance inspections upon incoming. After precision turning, rings undergo ultra-precision grinding and nanometer-level polishing, with strict control over raceway surface roughness and micro-geometric accuracy. Precision rolling elements are fully automatically sorted for size, roundness, and weight to ensure consistent load distribution within the same bearing set. All components undergo precision matching and assembly in high-grade cleanrooms, with precise injection of energy storage dedicated high-temperature resistant long-life synthetic grease. Finished products undergo 100% rotational precision, high-temperature resistance testing, and low-noise full inspection. Unqualified products are completely rejected, ensuring the ultimate performance of batch products under extreme conditions such as energy storage equipment, providing reliable support solutions for the new energy industry.

Product Series

Energy storage converter dedicated high-temperature resistant deep groove ball bearings, inverter dedicated high-precision cylindrical roller bearings, photovoltaic energy storage equipment dedicated low-noise bearings; Selection is based on high-temperature resistance levels, precision requirements, noise standards, and service life.

Brand Strength

NMT is deeply engaged in the R&D and manufacturing of energy storage converter precision bearings. Targeting industry pain points in energy storage scenarios—where traditional bearings suffer material softening and grease carbonization/loss at high temperatures leading to operational jamming, high internal friction causing decreased power conversion efficiency, and operational noise interfering with the precision power electronics environment—NMT continuously optimizes high-temperature resistant material modification technologies, zero-clearance preload designs, and exclusive high-temperature resistant long-life lubrication technologies. This effectively solves fatal defects of traditional bearings in energy storage equipment such as easy high-temperature failure, easy heating, and high noise. It significantly enhances the operational precision and power conversion efficiency of energy storage converters, helping high-end new energy equipment manufacturing enterprises break through precision transmission bottlenecks and seize the global new energy intelligent manufacturing market.