Onshore wind turbines, offshore wind power equipment, wind power gearboxes, main speed-increasing reducers, yaw and pitch mechanisms and wind power transmission spindles operate under extreme harsh working conditions of irregular variable load, alternating wind impact, high and low temperature alternation, micro-vibration reciprocation and 24-hour all-weather uninterrupted operation. Wind power equipment features high installation height, difficult operation and maintenance and extremely high shutdown costs, requiring far stricter standards for bearing load capacity, fatigue resistance and long-term stability than ordinary industrial equipment. Ordinary cylindrical roller bearings have insufficient structural strength, poor alternating load resistance and low fatigue life, and are prone to core failures under complex wind power conditions. Instant impact and alternating load caused by wind fluctuation lead to fatigue pitting of bearing raceways and stress damage of rollers, causing gearbox abnormal noise and transmission jitter. Long-term micro-vibration reciprocating operation produces micro-wear, resulting in continuous expansion of bearing clearance, failure of transmission precision and attenuation of equipment power generation efficiency. Outdoor high and low temperature alternation causes aging and failure of lubricating grease and oil carbonization, leading to bearing dry friction, heat generation and locking. Conventional bearings have insufficient fatigue life and surface peeling and structural failure after short-term operation, resulting in wind turbine shutdown maintenance and unit off-grid, which not only greatly increases wind power operation and maintenance costs, but also seriously affects the stable power generation and grid connection efficiency of wind farms, becoming a core equipment pain point in the new energy wind power industry.

Focusing on the new energy wind power heavy-load transmission field, Japan NMT specially develops high-load fatigue-resistant cylindrical roller bearings dedicated for wind power to solve the industry pain points of ordinary wind power bearings such as poor fatigue resistance, weak impact resistance, easy wear, short service life and high operation and maintenance costs. Through five core upgrades including wind power grade special high-strength base materials, alternating load mechanical optimized structure, deep-layer fatigue-resistant heat treatment, long-term aging-resistant lubrication system and micro-vibration wear protection design, it perfectly adapts to the complex variable load working conditions of wind power gearboxes and transmission mechanisms, thoroughly solving the problems of fatigue failure, impact damage, precision attenuation and insufficient service life of wind turbine bearings, and providing ultra-long-life and high-stability core transmission guarantee for onshore and offshore wind power equipment.

Core Product Advantages

1. Wind power grade high-strength base material doubles load capacity: Adopting ultra-high-purity alloy bearing steel specially used for wind power equipment with optimized metallographic structure, it greatly improves material toughness and compressive strength, and can withstand long-term irregular instantaneous heavy-load impact without deformation, cracking or structural instability.

2. Alternating load structure optimization resists impact and load fluctuation: The internal stress structure is specially optimized according to the characteristics of alternating wind load and instantaneous impact to evenly disperse stress concentration, effectively resist dynamic load changes caused by wind fluctuation, avoid raceway pitting and roller damage, and adapt to the complex dynamic working conditions of wind turbines.

3. Deep hardening treatment ensures ultra-high fatigue resistance and long service life: Adopting wind power special deep carburizing hardening and quenching and tempering heat treatment technology, it has high surface hardness and wear resistance as well as high core toughness and impact resistance, greatly improving the fatigue life under alternating loads, meeting the long-term continuous service requirements of wind turbines for more than ten years.

4. Long-term aging-resistant lubrication adapts to all-weather working conditions: Equipped with special high and low temperature resistant and aging-resistant long-life grease for wind power equipment, it withstands outdoor extreme temperature differences, long-term standing and continuous operation, and is not easy to carbonize, lose or fail, continuously forming a stable protective oil film to eliminate dry friction failures.

5. Micro-vibration protection design eliminates wear failure: Optimizing rolling contact accuracy and clearance ratio to suppress low-frequency micro-vibration reciprocating wear of wind power equipment, it effectively solves the problems of clearance expansion, precision drift and transmission stalling under long-term micro-working conditions of gearboxes, and continuously guarantees power generation transmission efficiency.

Application Scenarios

Onshore wind turbines, offshore wind power equipment, wind power main gearboxes, speed-increasing reducers, yaw reducers, pitch transmission mechanisms, wind power spindle transmission devices, large new energy wind power heavy-load transmission equipment.

Precision Quality Assurance

NMT wind power heavy-duty cylindrical roller bearings are manufactured in strict accordance with new energy wind power high-end equipment manufacturing standards. Adopting selected wind power grade high-strength special bearing steel, they undergo alternating load impact test, ultra-long fatigue durability test, high and low temperature cycle aging test, micro-vibration wear test and heavy-load deformation calibration. All products feature high load limit, excellent fatigue resistance, impact and aging resistance and strong precision retention, fully adapting to the all-weather, long-cycle and high-load extreme service working conditions of onshore and offshore wind power equipment.

Product Range

Wind power heavy-duty cylindrical roller bearings, gearbox fatigue-resistant bearings, long-life bearings for wind power reducers, corrosion-resistant heavy-duty bearings for offshore wind power, high and low temperature aging-resistant wind power bearings, micro-vibration wear protection bearings, customized bearings for non-standard wind power heavy-load working conditions.

Brand Strength

Japan NMT focuses on the R&D and manufacturing of exclusive bearings for high-end fields such as new energy, heavy industry and precision intelligent manufacturing, and is proficient in the structural optimization of bearings under extreme variable load, long-cycle fatigue and all-weather outdoor working conditions. With Japanese wind power grade precision manufacturing technology, strict long-life detection system and scenario-based customized solutions, it accurately solves the industry problems of wind power equipment bearings such as fatigue failure, impact damage, frequent maintenance and insufficient service life, providing high-load, fatigue-resistant and ultra-long-life core transmission parts for the global new energy wind power industry.