As the new energy vehicle industry accelerates its evolution towards high-voltage and high-speed applications, the e-drive system (motor, reducer, and electronic control), serving as the "power heart" of the vehicle, requires its internal bearings to maintain ultimate operational smoothness and ultra-long service life under ultra-high-speed conditions exceeding 20,000 RPM. However, with the widespread adoption of 800V high-voltage platforms, common-mode currents generated by high-frequency inverters easily penetrate traditional bearings, triggering "electrical erosion" that causes washboard-like corrugations and abnormal wear on raceways. Meanwhile, high temperatures and high-frequency whining inside the motor pose stringent challenges to the heat resistance and silence of bearings. NEV OEMs urgently need support bearings customized for high-voltage e-drives, featuring ultimate anti-erosion, ultra-silence, and high-efficiency characteristics.

Facing the ultimate pursuit of "quiet cabins" and "long range" by NEV owners, support systems must not only possess excellent electrical insulation capabilities but also maintain absolute tribological stability and low energy consumption during high-speed operation. Due to the lack of effective insulation coatings, traditional bearings are prone to electrical spark breakdown under high-voltage conditions, significantly shortening their service life. Furthermore, ordinary sealing structures easily generate wind resistance and friction noise at ultra-high speeds, directly degrading the NVH performance of the motor. The market urgently demands a new energy e-drive bearing solution that can break through the dual bottlenecks of electrical erosion failure and high-speed noise, comprehensively improving e-drive system efficiency and providing solid protection for the quality upgrade of green travel.

NMT New Energy E-Drive Bearings are born to conquer the ultimate challenges of high-voltage e-drive systems. This series achieves disruptive breakthroughs in electrical protection and dynamic design by comprehensively applying plasma-sprayed ceramic insulation coatings (e.g., Al2O3) to the surfaces of core rings and rolling elements to block current loops, fundamentally eliminating electrical erosion damage. For silence and high efficiency, NMT innovatively introduces a "streamlined raceway + lightweight resin cage" design, significantly reducing wind resistance and friction coefficients during high-speed operation, improving overall motor efficiency by over 1.5%. Meanwhile, special low-volatility, high-voltage-resistant insulation grease ensures a stable lubrication film under 180℃ high temperatures and high-voltage electric fields, effectively suppressing high-frequency whining.

In precision manufacturing and quality control, NMT enforces automotive-grade stringent standards for every component of its new energy e-drive bearings. Through the application of ceramic insulation coatings, low-friction structural design, and full-process quality control, the anti-erosion and silent performance of the bearings are comprehensively improved. NMT ensures that each bearing maintains zero electrical erosion, low noise, and high efficiency under extreme conditions of high voltage, high temperature, and ultra-high speed, avoiding early motor failure and range degradation, guaranteeing high consistency and high reliability of batch products, and completely eliminating operational hazards of NEV e-drive systems.

With rich specifications, these bearings are widely used in passenger car pure electric drive motors, hybrid dedicated transmissions (DHT), commercial vehicle e-axles, high-pressure oil pumps, and NEV thermal management systems, satisfying the supporting needs of various anti-erosion, ultra-silent, high-efficiency, and long-life transmission nodes.

Core Product Advantages

Plasma-sprayed ceramic insulation coatings on core rings and rolling elements block current loops, fundamentally eliminating electrical erosion damage under high-voltage conditions;

Innovative "streamlined raceway + lightweight resin cage" design significantly reduces high-speed wind resistance and friction coefficients, improving overall motor efficiency by over 1.5%;

Special low-volatility, high-voltage-resistant insulation grease forms a stable lubrication film under 180℃ high temperatures and high-voltage electric fields, effectively suppressing high-frequency whining;

Excellent ultra-silent characteristics optimize internal clearance and raceway micro-topography, significantly reducing high-frequency electromagnetic noise and enhancing vehicle NVH performance;

Ultimate lightweight and high-efficiency performance reduce rotating component inertia, lowering energy loss during motor startup and acceleration, helping vehicles extend driving range;

High-purity special bearing steel base material undergoes cryogenic treatment and ultra-precision grinding to eliminate internal residual stress, ensuring fatigue resistance under alternating loads;

Full life-cycle high-reliability design significantly reduces downtime maintenance frequency for e-drive systems, ensuring efficient and continuous operation of NEVs;

Full-process automotive-grade quality control and 100% insulation withstand voltage full inspection ensure precise dimensions, zero electrical erosion, and zero abnormal noise risk for each bearing in motors.

Typical Application Scenarios

Passenger car pure electric drive motors and hybrid DHT transmissions; Commercial vehicle e-axles and high-pressure oil pumps; NEV thermal management systems (electronic water/oil pumps); High-voltage generators and energy storage flywheel systems.

Precision Quality Assurance

NMT New Energy E-Drive Bearings use high-purity special bearing steel and high-performance engineering plastics as core raw materials, subject to strict material purity and electrical insulation inspections upon incoming. After precision turning, rings undergo plasma-sprayed ceramic insulation coating and ultra-precision grinding, with strict control over coating thickness, adhesion, and raceway surface roughness. 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 special insulation grease. Finished products undergo 100% rotational precision, insulation withstand voltage, and high-frequency noise testing. Unqualified products are completely rejected, ensuring the ultimate performance of batch products under extreme conditions such as NEV e-drive systems, providing reliable support solutions for green travel equipment.

Product Series

E-drive dedicated insulated deep groove ball bearings, e-drive dedicated lightweight angular contact ball bearings, thermal management system dedicated silent bearings; Selection is based on voltage levels, limit speed, insulation requirements, and NVH standards.

Brand Strength

NMT is deeply engaged in the R&D and manufacturing of new energy e-drive bearings. Targeting industry pain points in high-voltage e-drive scenarios—where traditional bearings easily suffer early failure from electrical erosion, high-speed wind resistance reduces energy efficiency, and ordinary grease breaks down under high voltage causing noise—NMT continuously optimizes plasma ceramic insulation coating technologies, streamlined low-friction structures, and high-voltage-resistant insulation lubrication technologies. This effectively solves fatal defects of traditional bearings in NEV motors such as easy electrical erosion, high noise, and low energy efficiency. It significantly enhances the operational reliability of e-drive systems and vehicle range performance, helping high-end NEV equipment manufacturing enterprises break through precision transmission bottlenecks and seize the global green travel intelligent manufacturing market.