Recently, the project "R&D and Application of Wind Turbine SRB Main Shaft Bearings," led by MAANSHAN JING WEI SLEWING BEARING CO.,LTD was appraised by experts organized by the Anhui Province Machinery Industry Federation. It was recognized as having overall technology reaching international advanced and domestic leading levels. This achievement marks a significant breakthrough for China in the key field of wind turbine main shaft bearings, providing strong support for promoting the localization of wind power equipment.

The project focuses on long-standing "bottleneck" problems in the manufacturing of wind turbine main shaft bearings—specifically, the lack of soft-band quenching technology. Through multiple improvements and experimental verifications, Jingwei, in collaboration with partners, successfully developed equipment and a supporting process system for soft-band-free quenching with independent intellectual property rights. This effectively breaks through foreign technological monopolies and addresses industry pain points such as high costs and low efficiency in traditional quenching processes.

In terms of innovative achievements, the project realizes three major breakthroughs:

· ‌Material System Innovation‌: By adding trace alloy elements, a new type of ring material with high strength and high hardenability is developed, better matching the requirements of soft-band-free induction quenching processes.

· ‌Process Control Breakthrough‌: High-precision accompanying tracking technology for quenching inductors is developed, overcoming the challenge of controlling the uniformity of hardened layers in large bearings.

· ‌Design Method Upgrade‌: A new bearing design software is independently developed, effectively solving system coupling deformation problems under complex working conditions.

Currently, the product has passed certification by the Beijing Jianheng Certification Center, and all performance indicators meet the 20-year service life requirements for onshore wind turbine main bearings. It has been applied in Mingyang Smart Energy Group. The project has cumulatively applied for 4 invention patents, obtained 1 authorized utility model patent and 3 software copyrights, and participated in the formulation of 1 national standard, demonstrating good technical maturity and industrial application prospects.

It is understood that in recent years, Jingwei has continuously increased R&D investment in areas such as wind turbine SRB, TRB, DTRB main shaft bearings, and intelligent tracking photovoltaics, achieving multiple progress results. The company's photovoltaic tracking reducers have been exported to many countries in Europe, North America, South America, the Middle East, and the Belt and Road region, generating hundreds of millions of yuan in foreign exchange revenue annually.

This technological breakthrough not only reflects Jingwei's innovative strength in the field of high-end bearings but also provides a reliable and cost-optimized domestic main shaft bearing solution for the wind power industry, helping to promote the independent construction of China's wind power equipment.