On July 9, Luoyang Bearing Group Co.,Ltd. achieved a manufacturing milestone by producing the complete bearing series for the world's largest ring rolling mill. This breakthrough not only fills a critical gap in ultra- large, ultra-heavy-duty forging components in China, but also establishes the country as a global leader in high- end bearing design and manufacturing.

中国高端装备制造又迎来里程碑时刻。7月9日，全球最大辗环机全系列轴承在洛阳轴承集团股份有限公司下线交付，填补了中国在超大型、超重载环形锻件装备核心零部件领域空白，标志着中国在该系列轴承的设计与制造领域实现领跑。

Bearings, often referred to as the "industrial joints", are fundamental components of mechanical equipment and play a critical role in determining manufacturing capabilities. The ring rolling mill is a key to produce massive metal rings, and the precision, load-bearing capacity, and reliability of its bearings dictates the nation's ability to build major equipment.

轴承，被喻为工业的“关节”，是机械设备的核心基础零部件，直接影响着装备制造能力。辗环机是大型环形件制造核心装备，其轴承的精度、承载力和可靠性直接关系到国家重大装备的制造水平。

The ring rolling mill they support marks China's first domestically developed system of its class, capable of forging 22-meter-diameter rings under 3,552-ton rolling forces. Pushing industry limits in scale and load capacity, these bearings represent a major technical breakthrough, featuring exceptional complexity, high development challenges, and uncompromising reliability demands.

此次需配套的辗环机为首次研制，最大辗环直径22米，最大轧制力3552吨；其轴承的尺寸、重量超过行业以往生产极限，技术含量高、研制难度大、可靠性要求高。

Ling Hong, chief engineer of the Large-Scale Bearing Division at Luoyang Bearing Group, introduced that the bearings rolled out this time feature newly developed structures, including semi-cage retainers and split raceways, innovations that overcome mega-scale engineering challenges. The bearings are made from newly developed materials with exceptional resistance to heavy loads and deformation, enabling them to withstand extreme rolling forces and impact loads under harsh working conditions. In addition, specially optimized heat treatment processes endow the bearings with excellent wear resistance, fatigue strength, and extended service life. These combined advantages ensure the stable operation of the ring rolling mill's core components while significantly reducing maintenance costs for end users.

洛轴集团特大型轴承事业部总工程师凌红介绍，此次下线的轴承采用半片式保持架、分体式滚道等全新结构，突破尺寸增大带来的技术壁垒。生产轴承用的新材料具备超强抗重载与抗变形能力，可承受极端工况下的巨大轧制力和冲击载荷。特别优化的热处理技术赋予轴承卓越的耐磨性、抗疲劳性和超长寿命。多重优势协同保障辗环机核心装备稳定运行，降低客户运维成本。

At the same time, the R&D team pioneered innovative machining techniques and inspection methods, propelling the bearings to world- class geometric and rotational accuracy, ending foreign dominance in high-end bearing technologies.

同时，攻关团队创新加工工艺及检测方法，使轴承几何精度、旋转精度达到世界领先水平，打破了国外高端轴承的技术垄断。（中文来源/河南日报 记者/陈学桦 范坤鹏 编译/杨佳欣 审校/陈行洁 赵汉青）

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