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

BEIJING — July 21, 2026 — On the morning of July 21, the National Technical Committee for Standardization on Rolling Bearing (hereinafter referred to as the "Committee") hosted the 2026 National Standard Review Meeting for Rolling Bearings via video conference. The meeting reviewed the submission drafts for two key national standards: 1. Rolling Bearings — Sleeve-type Linear Ball Bearings — Boundary Dimensions and Tolerances 2. Rolling Bearings — Ceramic Rolling Elements — Terminology and Characteristics of Surface Defects A total of 66 committee members (including 3 representatives) attended the meeting, accounting for 98.5% of the total 67 eligible members. Key Highlights & Opening Remarks The meeting commenced with an opening address by Jiang Wei, Chairman of the Committee and Chairman of Sinomach Precision Industry Group Co., Ltd. In his speech, Chairman Jiang outlined the latest directives from the Standardization Administration of the People's Republic of Chin...

 Bearings are among the most important components in electric motors. Their primary function is to support the rotating shaft, reduce friction during operation, and maintain accurate rotational performance. Although bearings are designed for long-term operation, their service life is influenced by many factors, including operating load, rotational speed, lubrication condition, temperature, installation accuracy, and working environment. For electric motors, bearing performance directly affects vibration level, noise, energy efficiency, and operational reliability. When bearing problems occur, they can lead to increased maintenance costs, unexpected downtime, and even secondary damage to other motor components. Understanding the factors that influence electric motor bearing life helps engineers improve equipment reliability and reduce premature failures. 1. Bearing Fatigue and Service Life For rolling bearings, the theoretical service life is mainly related to rolling contact fatig...

  Selecting the right bearing is one of the most important decisions in machine design and equipment maintenance. Even a high-quality bearing can experience premature failure if its load capacity, operating speed, lubrication method, or operating environment does not match the application. Rather than simply choosing a bearing with the highest load rating, engineers should evaluate the actual working conditions of the equipment. Load direction, rotational speed, contamination, temperature, and maintenance requirements all influence bearing performance and service life. This guide outlines the key considerations for selecting industrial bearings and explains how different bearing types perform under various operating conditions. 1. Match the Bearing Type to the Load Understanding how forces act on the shaft is the first step in bearing selection. Different bearing designs are optimized for different combinations of radial and axial loads. Deep Groove Ball Bearings Deep groove ball b...

High-precision spindle bearings are at the heart of modern CNC machine tools, determining spindle accuracy, rotational speed, rigidity, and long-term reliability. Even with a well-designed spindle, improper bearing selection or preload can lead to excessive heat generation, vibration, premature wear, and reduced machining accuracy. Engineers often focus on spindle power or motor performance while overlooking the bearing arrangement that ultimately supports the rotating system. In practice, many spindle failures are caused not by bearing quality, but by selecting the wrong bearing series, contact angle, preload, or installation method. This guide explains the key factors involved in selecting high-precision spindle bearings and provides practical recommendations for optimizing spindle performance in high-speed machining applications. 1. Select the Right Bearing Series Precision angular contact ball bearings for machine tool spindles are commonly available in four ISO dimension series: 7...

When selecting the optimum lubricating grease for industrial machinery, the operating temperature range is one of the most critical factors that engineers and maintenance professionals must evaluate. Lubricating grease does not have a universal application; different formulations possess distinct temperature limits based on their chemical composition. Because lubricating grease is fundamentally composed of three core components—base oil, thickener, and additives—its thermal performance is directly governed by how these elements react to temperature fluctuations. Manufacturers typically specify a maximum and minimum operating temperature for their products. When choosing a grease, you must match these specifications against the actual peak operating temperatures and the lowest ambient start-up temperatures of your equipment. 1. Defining Grease Operating Temperature Limits Minimum Operating Temperature As the temperature drops, lubricating grease experiences an increase in apparent visco...