Wheel Bearings: A key mechanical component that is mainly used to support wheels or rotating parts and reduce their friction during rotation. Its function is to ensure that the wheels can rotate smoothly and efficiently while bearing the weight, axial and radial loads of the vehicle. It plays a vital role in many application scenarios such as automobiles, bicycles, conveyor belt rollers of industrial equipment, etc. For example, in automobiles, wheel bearings have to bear the weight of the vehicle body, various impact forces during driving, and friction generated by high-speed rotation of wheels.
Structural composition
Inner Ring: Usually tightly matched with the shaft of the wheel or rotating part, it is an annular component inside the bearing. Its main function is to provide a precise rotating surface for the shaft and transfer axial and radial loads to the balls or rollers. The inner ring is generally made of high-hardness alloy steel, and the surface is finely ground to ensure its high precision and good wear resistance.
Outer Ring: Corresponding to the inner ring, it is an annular component outside the bearing, which is usually installed in the wheel hub or other fixed structure of the vehicle. The main function of the outer ring is to provide a rotation track for the balls or rollers and to distribute the load to the surrounding support structure. Similarly, the outer ring is made of high-quality alloy steel, and its outer and inner diameters have high dimensional accuracy requirements to ensure a good fit with the balls or rollers and the mounting parts.
Balls or Rollers: They are the key components in wheel bearings that are responsible for reducing friction. Ball bearings use spherical balls, while roller bearings use cylindrical or conical rollers. These balls or rollers roll between the inner and outer rings, converting sliding friction into rolling friction, greatly reducing friction. Balls or rollers are usually made of materials such as high-strength chrome steel, and the surface is treated by quenching and grinding to improve its hardness and surface finish.
Cage: It is used to separate and maintain the relative position between balls or rollers, ensuring that they are evenly distributed during rotation and avoiding collision and friction with each other. Cages are generally made of metal (such as stamped steel) or plastic (such as nylon). Metal cages are strong and suitable for high-load and high-speed rotation occasions; plastic cages have the advantages of light weight and good self-lubrication, and are often used in some applications with high weight and noise requirements.
Types and Features
Deep-Groove Ball Bearings:
Features: This is the most common type of wheel bearing, with simple structure, low friction coefficient and high limit speed. It can bear radial and axial loads at the same time, but the axial load bearing capacity is relatively weak. The internal clearance of deep groove ball bearings can be adjusted according to different application requirements. For example, in some equipment with high precision requirements, a smaller internal clearance can be selected to improve the rotation accuracy.
Application scenarios: Widely used in automobile wheels, power tools, small machinery and other fields. In automobile wheels, it can meet the load requirements during normal driving of the vehicle, and due to its good high-speed performance, it is suitable for the driving of the car at different speeds.
Tapered Roller Bearings:
Features: The rollers of tapered roller bearings are conical and can bear large radial and axial loads at the same time. Its axial load carrying capacity increases with the increase of contact angle, and it has good rigidity. However, the friction coefficient of tapered roller bearings is relatively large, and the speed limit is also lower than that of deep groove ball bearings.
Application scenarios: Commonly used in places where large axial forces need to be borne, such as the front wheel steering knuckles of automobiles and the wheels of heavy machinery. In the front wheel steering knuckles of automobiles, tapered roller bearings can effectively withstand the axial forces generated when the vehicle turns, ensuring the stable steering of the wheels.
Cylindrical Roller Bearings:
Features: The rollers of cylindrical roller bearings are cylindrical, have a large radial load carrying capacity, and have a small rolling friction coefficient. There is line contact between the rollers and the inner and outer rings, which can better disperse the radial load compared with the point contact of ball bearings. However, the axial load carrying capacity of cylindrical roller bearings is relatively weak, and generally needs to be used in combination with other bearings that can withstand axial forces.
Application scenarios: Widely used in places where large radial loads need to be borne, such as wheels of large industrial equipment and conveyor belt rollers. For example, in the wheels of large cranes, cylindrical roller bearings can effectively carry the huge weight of the vehicle body and ensure the smooth movement of the crane.
C&U Group Co., Ltd. (C&U): Founded in 1984, it is a group company with bearing manufacturing as its leading industry. It has formed seven major bearing production bases in Wenzhou, Hangzhou, Wuxi, Shanghai, Nanchong, Wuhu and Huangshi, and has 65 bearing finished products and accessories, producing more than 30,000 kinds of bearings with an inner diameter of 1.0mm to an outer diameter of 4000mm. Through the implementation of the agency system and chain monopoly operation mode, 69 bearing marketing companies and 130 bearing sales offices and bearing specialty stores have been established in central cities across the country, and trading companies have been established in the United States, Japan and Germany. Its products are sold well at home and abroad.
Wafangdian Bearing Group Co., Ltd. (ZWZ): Founded in 1938, it is the birthplace of China's bearing industry and ranks eighth in the world's bearing industry. Its leading products include major technical equipment supporting bearings, rail transit bearings, automobile vehicle bearings, wind power new energy bearings, etc. More than 18,000 bearing products all have independent intellectual property rights, accounting for 26% of all conventional bearing varieties in the world, and the products are exported to more than 100 countries and regions in the world.
Luoyang LYC Bearing Co., Ltd.: Founded in 1954, it is one of the 156 key projects during China's "First Five-Year Plan". It has passed ISO9001, ISO14001, TS16949 and other domestic and foreign authoritative certifications. The product series covers nine types and more than 20,000 types, and the product size ranges from 10mm inner diameter to 13.5m outer diameter. It has core technologies such as rail transit vehicle bearings and special bearings for major equipment, which are widely used in many fields, and has established a parallel marketing model of the sales head office and various business units, subsidiaries, and production plants.
Harbin Bearing Group Co., Ltd. (HRB): Born during the period of the War to Resist US Aggression and Aid Korea, it is one of the 156 key construction projects during the country's "First Five-Year Plan". After many expansions, renovations, construction and development, it has become one of the three major bearing production bases in my country. There are 3,388 main production equipments, with an annual production capacity of 80 million sets and sales revenue of 1.2 billion. It has formed a bearing product system with more than 7,000 specifications and varieties of ten types, with railway passenger car speed-up bearings, precision machine tool spindle bearings, and mining and metallurgical bearings as the leading products.
Xiangyang Automobile Bearing Co., Ltd. (ZXY): Founded in 1968 and listed on the Shenzhen Stock Exchange in 1996. It has an engineering technology center specializing in the research and development and application of new products and new technologies for automobile bearings. In addition to automobile bearings, it also involves a variety of bearing products in the fields of machinery, agricultural machinery, home appliances and wind power. Its technical research and development capabilities are in an absolute leading position in the domestic automobile bearing industry. Many technologies such as reinforced tapered roller bearings have national patents, and its products are exported to Europe, America, Southeast Asia and other countries and regions.
Zhejiang Tianma Bearing Group Co., Ltd. (TMB): With a 30-year development history, its leading products include more than 8,000 varieties of bearing products in ten categories, including short cylindrical roller bearings, deep groove ball bearings, tapered roller bearings, etc. The products cover aerospace, military, railway, automobile, wind power, shipbuilding and other fields according to the application field. Its independently developed new materials are used in high-end bearing products and have won the favor of domestic and foreign users.
Northwest Bearing Co., Ltd. (NXZ): Formerly known as Northwest Bearing Factory, it is one of the largest specialized bearing manufacturers in the western region of the country. It was restructured and listed in 1996 and became the first listed company in China's bearing industry. It has a national enterprise technology center and develops more than 200 new products on average each year. The oil drilling bearings it developed won the National Quality Gold Award. In terms of product development and manufacturing technology in the field of large special bearings, it is at the leading level in China. The products have also been successfully used in the launch monitoring devices of Shenzhou V and Shenzhou VI.
Fujian Longxi Bearing (Group) Co., Ltd. (LS): It is a modern state-owned holding listed group company that produces and operates spherical bearings, tapered roller bearings, rolling functional components and high-end mechanical parts. It has an annual production capacity of 15 million sets of spherical bearings, 8 million sets of automotive tapered roller bearings and ag bearings, etc. The number of varieties, production and sales of its leading product, spherical bearings, ranks first in the world. They are widely used in various industries of the national economy and national key projects, and are exported in large quantities to more than 40 industrially developed countries and regions such as Europe, America and Asia.
Wanxiang Qianchao Co., Ltd. (Qianchao): listed on the Shenzhen Stock Exchange in 1994, mainly produces universal joints, drive shafts, brakes, fuel tanks and other products. It has a high reputation and market share in the field of automotive parts. Its bearing products are also widely used in the automotive industry. With its deep accumulation and technical strength in the automotive industry, it provides strong support for the production of automotive wheel bearings.
ShaoXing Zhenghong Autoparts Co.,Ltd is one of the professional manufacturer in Zhejiang Province,China, having specialized in producing automotive bearings for the last 10 years. We currently export our products to Southeast Asia, Middle East,Arica and South America with the reputation of quality products and competitive prices.
Including over 2,000 kinds of auto parts , our products apply to the vehicles of TOYOTA, NISSAN, MITSUBISHI, HONDA, SUBARU, DAIHATSU, SUZUKI, ISUZU,G.M, FORD/MAZDA, CHRYSLER, B.M.W, VW., AUDI, OPEL, PEUGEOT, CITROEN, RENAULT, SAAB, FIAT, ALFA, AUSTIN, SEAT, VOLVO, HYDUNDAI, DAWOO and KIA.
Zhenghong claims to have been building wider global sales networks, as well as focusing on making better-quality products and providing more satisfactory services. In addition, the company's R&D department has been aggressively researching new designs, materials, and manufacturing techniques to further upgrade product quality and durability.
The maker tests all products before delivery to guarantee top quality, with an in-house quality control department well equipped with computerized instruments to assure precision, durability and function for its finished products.
Zhenghong claims that it now keeps in stock over 1,000 product items, with lead time of only 10-30 days depending on quantity. Small volume and large variety orders are welcome.
