China Shandong Star Create Bearings Technology Co., Ltd. Company News

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1. Policy and Industry PlanningThe 15th Five-Year Plan is launchedThe China Bearing Industry Association held a meeting in Luoyang in January 2025 to officially launch the preparation of the 15th Five-Year Plan for the bearing industry, focusing on technological innovation, industrial upgrading and green transformation, with the goal of promoting high-end and intelligent development.Local Industry Green UpgradingYandian Town, Linqing City, Shandong Province, passed the clean production audit innovation pilot, promoted the green transformation of the bearing industry cluster, and was recognized by the Ministry of Ecology and Environment.Linxi County, Hebei Province commended the green manufacturing contribution of bearing companies, such as Xintai Bearings won the High-Quality Development Award.2. Corporate Dynamics and Market PerformanceCorporate Strategic Cooperation and ExpansionHarlin Group (Linqing, Shandong) plans to improve the level of digitalization and intelligence and strengthen the competitiveness of the bearing industry by leveraging the industrial policy of Liaocheng City.Wuzhou Xinchun signed an agreement with Zhongding Co., Ltd. to jointly develop humanoid robot component assembly products and expand the high-end application market.Hunan Chongde Technology and Jiangsu Datong Baofu deepened strategic cooperation to promote the coordinated development of ventilator and bearing technology. Capital market heatIn March 2025, "bearing" concept stocks moved abnormally. Companies such as Southern Precision and Baota Industry rose to the daily limit due to the growth in demand for robot bearings, and the industry's attention increased by .Production capacity and technological breakthroughsGuizhou Fengda Bearing accelerated the production line of special micro bearings, achieving rapid production in 28 minutes, covering the entire process of disassembly, cleaning and testing.Wuhan Axle Group's railway bearing maintenance line was put into production, integrating digital and automation technologies to improve maintenance efficiency.3. Technological innovation and product developmentLubrication and material technologyNTN Corporation launched a special oil supply unit for grease-lubricated bearings, supporting high-speed rotation with a dmn value of 1.9 million, breaking through the limitations of traditional oil and gas lubrication.**Japan Seiko (NSK)** developed low-friction wheel hub bearings, reducing friction by 40%, helping electric vehicles to increase their range by about 1,000 kilometers/year.Patent and standard constructionZhejiang Wanzhong Precision Bearings won the national invention patent "A bearing vibration measurement device", with a total of nearly 20 patents.Jiangsu Wanda Bearing promotes lightweight precision bearing projects, focuses on the demand for new energy equipment, and strengthens domestic substitution.4. Local industries and exhibitionsRegional cluster developmentShandong Liaocheng, Zhejiang Ningbo and other places have cultivated technical talents through school-enterprise cooperation (such as Luoyang Bearing Group and Luoyang Vocational and Technical College) to promote the integration of industry, academia and research.Guangdong Dongguan Zhongguang Electromechanical relies on 37 years of supply chain experience to cope with the surge in orders after the New Year and demonstrate efficient collaboration.Industry exhibitions and exchanges2025 China (Chengdu) Animal Husbandry Expo (April) and Guangzhou International Bearing Exhibition (May) will showcase intelligent and green bearing solutions.

Hygienic design issues for food machinery play an important role in controlling food safety. However, if the hygienic design of equipment components is not considered and the concept is only applied in general, there is a risk of bacterial growth and spread in bearings, said Davide Zanghi, head of SKF's Hygienic Design Office. Hygienic design considers the adverse effects of specific factors (such as corrosion, lubricant leakage, cleaning and automatic drying) on ​​food safety and applies appropriate design principles to solve the problems. In essence, it is a concept of designing with specific principles. Just as ergonomic design focuses on the physiological needs of users, hygienic design focuses on preventing food contamination. The European Hygienic Engineering and Design Group (EHEDG) aims to promote the safe food production capabilities of its members (including equipment manufacturers, food companies and research institutions) by improving hygienic engineering design standards. SKF has been a member of EHEDG since 2006. In November 2016, the group held its biennial world congress in Denmark, where SKF once again highlighted its long tradition of applying these design principles. Design principles - take bearing components seriously Generally, EHEDG guidelines consider bearings to be a potential breeding ground for bacteria, as they can easily trap food particles and water. The general recommendation is to keep bearings away from food contact areas. This recommendation fits in well with the latest guidelines for the hygienic design of belt conveyors for the food industry, where EHEDG focuses on two major challenges in safe food production: how to avoid food contamination due to poorly designed processing equipment, and how to improve food safety without increasing operating costs for clean production and hygiene. In fact, the main focus in the hygienic design of the entire system is on the system and the main components (such as belts); bearings and bearing units are often not given enough attention. However, even if bearings are not in direct contact with the food area, they are often in the vicinity of the food and have high-pressure water or dry cleaning systems. This way, if bacteria are present, they can become airborne and contaminate the food. In order to minimize the risk of contamination, hygienic design principles should be taken into account when designing bearings. One of the most important principles that constitute hygienic design is the ability to be cleaned effectively. This is actually easy to understand, but in practice it is often not easy for bearings and bearing units. Firstly, the product should be made of non-corrosive and non-porous materials (such as stainless steel) or composite materials, and the shape should be easy to clean and the retained water can be drained automatically. The bearing unit should have a filled seat to avoid leaving gaps for bacteria to grow. In general, the use of materials such as elastomers, composites and greases should comply with food safety directives and regulations. In all cases, grease leakage into the food during operation should be avoided as much as possible. The best approach is to equip the bearing unit with an effective end cover to prevent contaminants and cleaning liquids from entering the bearing cavity, while allowing frequent visual inspection. Other relevant areas include: Avoid metal-to-metal contact between unit components and attached surfaces Relubrication should be avoided as much as possible Achieve long service life under very demanding operation and cleaning systems Hygienic design is fully applicable to food production and packaging machinery. However, the bearing is only one of many problem components, and solving the bearing problem is only the first step in improving the overall risk strategy.

When selecting a grease for high temperature applications, thermal stability, oxidation resistance and temperature limits must be considered. In non-relubricable applications, when operating temperatures are above 121°C, it is important to select a refined mineral oil or a stable synthetic oil as the base oil. Table 28. Grease Temperature Range Contaminants Abrasive Particles When rolling bearing models are operated in a clean environment, the main cause of bearing damage is fatigue of the rolling contact surfaces. However, when particulate contaminants enter the bearing system, it can cause damage such as galling, which can shorten the life of the bearing. When contaminants in the environment or metal burrs from certain components in an application contaminate the lubricant, wear becomes the primary cause of bearing damage. If, due to particulate contamination of the lubricant, bearing wear becomes significant, critical bearing dimensions can change, which can affect machine operation. Bearings operating in contaminated lubricants will experience higher initial wear rates than those operating in non-contaminated lubricants. However, this rate of wear decreases quickly when the lubricant is no longer encroaching further because the contaminant shrinks in size as it passes through the bearing contact surface during normal operation. Moisture and moisture are important factors in bearing damage. Grease can provide a protective measure against such damage. Certain greases, such as calcium complex and aluminum complex greases, are extremely resistant to water. Sodium-based grease is soluble in water and therefore cannot be used in applications containing water. Whether it is dissolved water or suspended water in lubricating oil, it can have a fatal impact on the fatigue life of bearings. Water can corrode bearings, and corrosion can reduce bearing fatigue life. The exact mechanism by which water reduces fatigue life is not fully understood. But it has been suggested that water can get into the microcracks in the bearing raceways, which are caused by repeated cyclic stresses. This results in corrosion and hydrogen embrittlement of microcracks, greatly reducing the time required for these cracks to propagate to unacceptable cracking sizes. Water-based fluids such as water glycol and converted emulsions have also shown a reduction in bearing fatigue life. While the water from which it comes is not the same as contaminated water, the results support previous arguments about water contaminating lubricants.  

Grease lubrication is generally suitable for low to medium speed applications where the bearing operating temperature is below the grease limit temperature. No single anti-friction bearing grease is suitable for all applications. Each grease has limited properties and characteristics. Greases consist of a base oil, thickeners, and additives. Bearing greases usually contain a petroleum base oil thickened with some kind of metal soap. In recent years, organic and inorganic thickeners have been added to synthetic base oils. Table 26 summarizes the composition of typical greases. Table 26. Composition of Greases Base Oil Thickener Additive Greases Mineral Oil Synthetic Hydrocarbon Esters Perfluorinated Oils Silicones Lithium, Aluminum, Barium, Calcium, and Complex Soaps Soap-free (Inorganic) Microgels (Clay), Carbon Black, Silica Gel, PTFE Soap-free (Organic) Polyurea Compounds Rust Inhibitors Dyes Tackifiers Metal Deactivators Antioxidants Antiwear Extreme Pressure Additives Calcium and aluminum greases have excellent water resistance and are suitable for industrial applications where protection from water intrusion is required. Lithium greases are versatile and are suitable for industrial applications and wheel end bearings. Synthetic base oils, such as esters, organic esters, and silicones, when used with common thickeners and additives, generally have higher maximum operating temperatures than petroleum-based oils. The operating temperature range for synthetic greases can be from -73°C to 288°C. Below are the general characteristics of common thickeners used with petroleum-based oils. Table 27. General Characteristics of Thickeners Used with Petroleum-Based Oils Thickener Typical Dropping Point Maximum Temperature Water Resistance Using the thickeners in Table 27 with synthetic hydrocarbon or ester base oils can increase the maximum operating temperature by approximately 10°C. °C °F °C °F Lithium 193 380 121 250 Good Lithium Complex 260+ 500+ 149 300 Good Aluminum Complex 249 480 149 300 Excellent Calcium Sulfonate 299 570 177 350 Excellent Polyurea 260 500 149 300 Good The use of polyurea as a thickener is the most significant development in lubrication in more than 30 years. Polyurea greases have shown excellent performance in a variety of bearing applications and have become an accepted pre-lubricant for ball bearings in a short period of time. Low Temperatures At low temperatures, the starting torque of grease-lubricated bearings is very important. Some greases only work when the bearing is running, but they cause too much resistance to the starting of the bearing. In some small machines, it may not be possible to start when the temperature is very low. In such working environments, the grease is required to have the characteristics of low temperature starting. Synthetic greases have a distinct advantage when it comes to operating over a wide temperature range. They can provide very low starting and running torques at temperatures as low as -73°C. In some cases, these greases can outperform oils in this regard. An important point about greases is that starting torque is not necessarily a function of grease consistency or overall performance. Starting torque is more a function of the individual properties of a particular grease and is determined by experience. High Temperatures: The high temperature limits of modern greases are usually a function of the thermal stability and oxidation resistance of the base oil and the effectiveness of the oxidation inhibitors. The temperature range of a grease is determined by the dropping point of the grease thickener and the composition of the base oil. Table 28 shows the temperature range of greases for various base oils. An empirical approach based on many years of testing grease-lubricated bearings has shown that grease service life is halved for every 10°C increase in temperature. For example, if a grease has a service life of 2000 hours at 90°C, the service life drops to approximately 1000 hours at 100°C. On the other hand, by lowering the temperature to 80°C, the service life can be expected to reach 4000 hours.