In the grand blueprint of building a new global power system, the new energy storage power conversion system (PCS) serves as the "absolute heart" connecting battery packs to the grid for highly efficient bidirectional power conversion. As energy storage stations rapidly evolve towards high capacity and high power density, the internal space of converters becomes increasingly confined. Core transmission bearings must maintain micrometer-level operational precision and ultra-low energy loss in continuous high-temperature environments of 150℃ and high-frequency electromagnetic vibrations. However, traditional bearings in confined, heat-dissipation-restricted spaces are highly susceptible to grease carbonization failure and material softening due to heat accumulation. Meanwhile, friction losses of ordinary bearings during high-speed operation directly reduce the overall power conversion efficiency of energy storage systems. New energy equipment manufacturers urgently need support bearings customized for energy storage conditions, featuring ultimate high precision, high-temperature resistance, and low-loss characteristics.

Facing the stringent energy storage industry standards for "high conversion efficiency" and "long-term maintenance-free operation," support systems must not only possess high-temperature stability that breaks through material limits but also maintain absolute dimensional stability and ultra-low friction during long-term continuous operation. Due to the easy oxidation and deterioration of ordinary greases at high temperatures, and the susceptibility of conventional bearing steels to fretting wear under extreme thermal stress, traditional bearings directly threaten the safe operation of energy storage stations. The market urgently demands a new energy storage converter bearing solution that can break through the dual bottlenecks of high-temperature failure and friction loss, achieving full life-cycle high-reliability operation and providing solid protection for the efficient dispatch of green energy.

NMT New Energy Storage Converter Bearings are born to conquer the ultimate challenges of confined high-temperature spaces. This series achieves disruptive breakthroughs in materials science and thermal management design. The core rings and rolling elements comprehensively use high-purity high-carbon chromium bearing steel, combined with special solution strengthening and secondary hardening heat treatment processes, endowing the material with the excellent trait of maintaining extremely high hardness and dimensional stability at 150℃. For low-loss and high-precision performance, NMT innovatively introduces a "thin-wall lightweight structure + high-temperature resistant polyimide cage" design, significantly reducing bearing volume and weight while increasing heat dissipation area and reducing friction heat. Meanwhile, special high-temperature resistant long-life synthetic grease formulated with perfluoropolyether synthetic base oil and PTFE thickener is adopted, which is not easy to oxidize and carbonize at 150℃, 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 special high-temperature resistant materials, thin-wall heat dissipation design, and full-process quality control, the high-precision and low-loss performance of the bearings are comprehensively improved. NMT ensures that each bearing maintains ultra-low friction loss and extremely high operational precision under the extreme high-temperature conditions of converters, avoiding the decline of power conversion efficiency, guaranteeing high consistency and high reliability of batch products, and completely eliminating operational hazards of energy storage equipment.

With rich specifications, these bearings are widely used in energy storage converter (PCS) main shafts, energy storage battery thermal management systems, inverters, and high-voltage power distribution cabinets, satisfying the supporting needs of various high-precision, high-temperature resistant, low-loss, and long-life transmission nodes.

Core Product Advantages

Core rings and rolling elements use high-purity high-carbon chromium bearing steel, combined with special solution strengthening and secondary hardening heat treatment, endowing the excellent trait of maintaining extremely high hardness and dimensional stability at 150℃;

Innovative "thin-wall lightweight structure + high-temperature resistant polyimide cage" design significantly reduces volume and weight, increases heat dissipation area, and effectively reduces friction heat and energy loss during high-speed operation;

Energy storage dedicated high-temperature resistant long-life synthetic grease (perfluoropolyether + PTFE) is not easy to oxidize and carbonize at 150℃, with a lubrication life of over 12,000 hours, ensuring long-term maintenance-free operation;

Precise matched preload and zero-clearance control technology significantly enhance bearing rigidity and positioning accuracy, ensuring smooth operation of internal converter components, effectively safeguarding power conversion efficiency, and reducing energy loss;

High-purity special materials and nanometer-level ultra-precision ground raceways significantly reduce friction coefficients, decreasing energy loss and temperature rise in extreme environments, enhancing overall transmission efficiency;

Excellent high-temperature fatigue resistance and long-life performance; optimized internal contact stress distribution significantly reduces fatigue failure risks under long-term high-temperature alternating loads, achieving ultra-long service cycles for core components;

Full life-cycle high-reliability design significantly reduces downtime maintenance frequency for energy storage stations, ensuring efficient, safe, and continuous dispatch and output of green energy;

Full-process high-precision quality control and 100% high-temperature rotational precision and friction torque full inspection ensure precise dimensions, zero jamming, and zero high-temperature failure risks for each bearing in converters.

Typical Application Scenarios

Energy storage converter (PCS) main shafts and inverters; Energy storage battery thermal management systems and cooling fans; High-voltage power distribution cabinets and core transmission nodes of new energy microgrids.

Precision Quality Assurance

NMT New Energy Storage Converter Bearings use high-purity high-carbon chromium bearing steel as core raw materials, subject to strict material purity and high-temperature mechanical property inspections upon incoming. After precision turning, rings undergo special solution strengthening and secondary hardening heat treatment, with strict control over raceway surface hardness, residual compressive stress, and micro-geometric accuracy. Precision rolling elements are fully automatically sorted for size, roundness, and weight to ensure consistent load distribution and friction torque 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 friction torque, and life testing. 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 green energy equipment.

Product Series

Converter dedicated high-precision deep groove ball bearings, energy storage system dedicated high-temperature resistant cylindrical roller bearings, inverter dedicated low-loss bearings; Selection is based on temperature resistance levels, precision requirements, friction loss standards, and service life.

Brand Strength

NMT is deeply engaged in the R&D and manufacturing of new energy storage precision bearings. Targeting industry pain points in confined high-temperature scenarios of energy storage converters—where traditional bearings suffer grease carbonization failure and material softening at high temperatures, high friction loss leads to decreased power conversion efficiency, and restricted heat dissipation triggers early fatigue spalling—NMT continuously optimizes special high-temperature resistant heat treatment technologies, thin-wall lightweight heat dissipation structures, and perfluoropolyether long-life lubrication technologies. This effectively solves fatal defects of traditional bearings in energy storage equipment such as easy high-temperature failure, high loss, and short life. It significantly enhances the operational reliability and power conversion efficiency of energy storage systems, helping high-end new energy equipment manufacturing enterprises break through precision transmission bottlenecks and seize the global green energy intelligent manufacturing market.