ZYS Achieves Major Breakthroughs in International Standardization for Rolling Bearings

Standards serve as the technical foundation of industrial development, the primary vehicle for technological innovation, and a core strategic resource in global industrial competitiveness. As China accelerates its transition from a major bearing manufacturer to a global bearing powerhouse, the strategic role of standardization has become more prominent than ever.

Luoyang Bearing Research Institute Co., Ltd. (ZYS)—which hosts the secretariats of the National Technical Committee on Rolling Bearings of Standardization Administration of China (SAC/TC98), ISO/TC4/SC6 (Insert Bearings), and ISO/TC4/SC11 (Linear Motion Rolling Bearings)—has fully advanced the formulation and revision of international standards in these critical fields. These efforts have yielded remarkable achievements, driving the high-quality development of the global insert bearing and linear motion rolling bearing industries.

A Historic Milestone: Official Publication of ISO 19457

On July 2, 2026, the international standard ISO 19457, “Rolling bearings - Roller blocks as subassemblies for linear motion rolling bearings – Boundary dimensions and tolerance values,” led and developed by ZYS, was officially published.

Linear motion roller blocks are critical components widely utilized in high-end equipment such as precision CNC machine tools and semiconductor manufacturing devices. ISO 19457 specifies the structural types, dimensions, tolerances, and technical requirements for these roller blocks. By unifying product specifications and technical indicators across different countries, this standard paves the way for greater standardization, regulation, and high-end development in the international market.

Approved as an official project in October 2022, the development of ISO 19457 spanned three years and nine months. The process involved 16 international working group meetings and generated over 170 working group documents. Thanks to the collaborative efforts of experts from China, Austria, Japan, Germany, the United Kingdom, Russia, the United States, and other member nations, the standard has been successfully delivered. This achievement marks the fourth international standard led by China in the rolling bearing field and represents China's first led international standard in the sector of linear motion rolling bearings.

Securing New Leadership Roles in Global Standard Frameworks

In May 2026, following a vote by the member countries of ISO/TC4/SC6, ZYS was officially appointed to lead the drafting of two new international standards:

• ISO 25260-1: Rolling bearings-Insert bearing units-Part 1: Geometrical Product Specifications (GPS) and tolerance values for insert bearings and eccentric locking collars

• ISO 25260-2: Rolling bearings-Insert bearing units-Part 2: Geometrical Product Specifications (GPS) and tolerance values for cast and pressed housings

Together with the previously ongoing project ISO 25260-3 (Rolling bearings-Insert bearing units-Part 3: Boundary dimensions for mounting), these standards will significantly optimize the international insert bearing standard framework, steering the global industry toward higher quality and technological transformation.

Looking Forward

ZYS remains committed to driving high-quality industrial development through robust standardization efforts. Moving forward, ZYS will continue to strengthen standard leadership and elevate international standardization practices. By working with a higher strategic posture, a broader global perspective, and practical implementation measures, ZYS will continue to contribute to the high-quality development of both domestic and global bearing industries.

About us
Luoyang Bearing Research Institute Co., Ltd. is a high-tech enterprise specializing in the development of "high-rank, precise, advanced, unique, special" bearing products for the key units in various fields of national economic construction. Its predecessor, Luoyang Bearing Research Institute, was established in 1958. It is the only state-level comprehensive research institute in China's bearing industry. In 1999, it entered China National Machinery Industry Group Co., Ltd. and transformed into a science and technology enterprise.

We focus on developing high-performance bearing products for key units of national economic construction. We perform batch production of various high-rank bearing products and components with inner diameter of 0.6mm to outer diameter of 6.8m. We are mainly engaged in the research, development, production and sales of precision bearing, special bearing, high-speed machine tool spindle, bearing special equipment, bearing testing instruments, bearing testing machine and bearing special materials, which are widely used in the fields of aerospace, machine tools, wind power generation, mine metallurgy, petrochemical, medical equipment, automobiles and rail transit, construction machinery, intelligent manufacturing services, etc.

We have total assets of 2.06 billion RMB, own one research and development center, three industrial bases and cover an area of more than 47 hectares. We have advanced bearing manufacturing equipments and world first-class testing equipments and have solid strength in manufacturing, measuring and testing of bearing and related components with high precision and high reliability. We have more than 380 technical staff of bearing related disciplines, thus we maintain a leading position in the aspects of bearing design, basic theoretical research, lubrication technology, metallic and non-metallic materials, testing and industry standards.

Many scientific research centers, laboratory and service agencies are set in our company, including National Bearing Quality Supervision and Inspection Center, National Bearing Accreditation Laboratory, Industrial (Rolling Bearing) Product Quality Control and Technical Evaluation Laboratory, National Rolling Bearing Standardization Technical Committee, ISO/TC4 Domestic Technology Responsible Unit, China Bearing Industry Association Technical Committee, Machinery Industry Occupational Skill Identification Bearing Industry Sub-center, National Rolling Bearing Industry Technology Innovation Strategic Alliance, High-end Bearing Tribology Technology and Application National-Local Joint Engineering Laboratory, State Key Laboratory of Shield Machine and Boring Technology (Bearing), Machinery Industry High-speed Precision Bearing Engineering Research Center, Henan Province Machine Tool Spindle Unit Engineering Research Center, Henan Province High Performance Bearing Technology Key Laboratory, National Postdoctoral Research Workstation, Henan Province Bearing Generic Technology Academician Workstation, State Intellectual Property Office Patent Exchange Station and so on.

We have so far achieved 908 major scientific research achievements, among which there are 31 awards of National Invention Awards and National Science and Technology Progress Awards, and 234 awards of provincial scientific and technological achievement awards.We have attained 792 granted patents, among which there are 277 patents for inventions. In addition, we established and revised the bearing industry technical standards for over 670 times, and also issued 457 volumes of “Bearing” magazine.
We are also an important supplier of spare parts for CNC machine tools, shipbuilding, railway transit, automobile industry, wind power and other industries at home and abroad.

Our company upholds“honesty, rigorousness, innovation and win-win” business philosophy, adheres to scientific and technological innovation, insists on the development of modern manufacturing services and other special advantage industries. We aim to be China's bearing industry innovation leader, and build China's high-end bearing industrialization base and become to international well-known enterprise in world rolling transmission field.
Website: www.zys-bearing.com
Email: sales@zys.com.cn