ZYS precision bearing, ball bearings, roller bearings, bearing parts

  To thoroughly implement national laws and regulations on work safety and occupational health, and to comprehensively enhance the professional expertise and management standards of the company’s safety and occupational health team, Sinomach Precision Industry Group Co., Ltd. recently organized a qualification training program on safety and occupational health management. Over 80 participants from the headquarters and Zhengzhou-based subsidiaries attended the training and passed the assessment. Notably, the General Manager and Safety Director of Zhengzhou Sinomach Precision Industry Development Co., Ltd., attended the sessions alongside all trainees and successfully past the certification assessment with high scores. The training covered a comprehensive range of critical topics, including work safety laws and regulations, occupational health management practices, accident prevention, and emergency response. During the sessions, industry experts presented in-depth yet accessible ana...

    Standards serve as a core anchor for economic activities, technological innovation, and industrial modernization. As the host organization for the Secretariat of the China National Rolling Bearing Standardization Technical Committee, the domestic matching unit for ISO/TC 4, and the Secretariat for ISO/TC 4/SC 6 (Insert Bearings) and SC 11 (Linear Motion Rolling Bearings), Luoyang Bearing Research Institute Co., Ltd. (ZYS) continues to promote high-quality development in the bearing industry through standardization. Strategic Focus: Building a Future-Ready Standardization Mechanism As China's bearing sector advances toward high-end self-reliance and global competitiveness, ZYS actively refines standardization mechanisms to closely align standard development with industrial needs: Systematic Framework Development: Aligning with national standardization strategies and high-end machinery guidelines, ZYS systematically optimizes the rolling bearing standard structure. Prof...

  Deep groove ball bearings are designed to operate with a controlled amount of internal clearance between the rolling elements and raceways. Although bearing clearance is usually specified by a small code such as C2, CN, C3, or C4, its influence on bearing performance is significant. Internal clearance directly affects the load distribution between the balls and raceways, operating friction, temperature rise, structural vibration, noise, and overall bearing service life. More importantly, the clearance specified for a new unmounted bearing is not necessarily the clearance that the bearing will maintain after installation or during operation. Selecting the correct deep groove ball bearing clearance requires more than simply choosing between CN and C3. Shaft and housing fits, operating temperature differences, rotational speed, dynamic load, and mounting conditions must all be evaluated as an integrated system. What Is Deep Groove Ball Bearing Internal Clearance? Bearing internal cl...

 In wind turbines, a bearing failure can be the result of a combination of factors involving load, lubrication, material, heat treatment, manufacturing quality, installation, operating conditions and the surrounding drivetrain. Simply replacing the damaged bearing may restore operation temporarily, but it does not necessarily solve the underlying problem. For this reason, bearing failure analysis is an important part of wind turbine reliability improvement. A proper investigation starts with the failed bearing itself, but it does not stop there. The damage morphology needs to be examined together with operating data, material properties, heat treatment condition and manufacturing characteristics. The objective is to identify the most probable root cause and provide practical measures to prevent the same failure from occurring again. Why Is Wind Turbine Bearing Failure Analysis Important? Wind turbine bearings operate under variable loads and complex environmental conditions. Main b...

   1. Structural Design and Working Principles of Spherical Plain Bearings The human shoulder joint allows the arm to rotate 360 degrees, while the hip joint lets the leg swing freely in all directions. Without joints, bones would be nothing more than rigid sticks, incapable of executing complex movements. Is there a bearing that functions like human joints, allowing connected components to swing and tilt freely? Yes. It is called the Spherical Plain Bearing. 1.1 Spherical Contact & Self-Aligning Capability The core secret of a spherical plain bearing lies within its geometry—the spherical surface. Its inner ring has a spherical outer surface, and its outer ring features a corresponding spherical inner surface. Together, they form a sliding pair that swivels freely. This design closely mirrors human anatomy: the humeral head of the shoulder joint is spherical, fitting snugly into the glenoid cavity. This spherical contact enables flexible rotation—forward, backward, sidewa...

  Bearings used in petroleum machinery are not working in an ordinary industrial environment. Oilfield equipment may be exposed to heavy loads, vibration, shock loads, abrasive drilling fluids, contamination, temperature changes and continuous operation. In this type of application, bearing selection is not simply a matter of choosing a bearing with the correct dimensions. The bearing must be matched to the actual operating conditions of the equipment. For drilling equipment, mud pumps, drilling motors, rotary tables and other petroleum machinery, the right bearing design can directly affect equipment reliability, maintenance intervals and operating performance. This article explains the main factors engineers should consider when selecting petroleum machinery bearings. What Makes Petroleum Machinery Bearings Different? The main challenge is the combination of several demanding operating conditions. A bearing in an oilfield application may have to carry high radial or axial loads w...

On July 2 and July 30, 2026, the State Administration for Market Regulation and the Standardization Administration of the People's Republic of China approved and issued 233 foreign language editions of national standards, 323 recommended national standards, and 7 amendment sheets for recommended national standards, under Announcement Nos. 29 and 33 of 2026, respectively. Among these announcements, a total of 4 national standards involve the field of rolling bearings , as listed below: No. National Standard No. Standard Title (Chinese) Standard Title (English) Translated Language 1 GB/T 25767—2025 滚动轴承 圆锥滚子 Rolling bearings—Tapered rollers English No. National Standard No. Standard Title (Chinese) Standard Title (English) Replaced Standard No. Implementation Date 1 GB/T 27557—2026 滚动轴承 直线运动滚动支承 代号方法 Rolling bearings—Linear motion rolling bearings—Designation code method GB/T 27557—2011 2026-11-01 2 GB/T 27558—2026 滚动轴承 直线运动滚动支承 分类 Rolling bearings—Linear motion rolling bearings—Cla...