Transformation of ZWZ Sail Project into Intelligent Manufacturing Series 1 ： ZWZ Full Complement Cylindrical Roller Bearings Without Outer Ring with optimal performance
Full complement cylindrical roller bearings without outer ring
With the rapid development of high-tech products such as modern aerospace, optoelectromagnetic instruments, and precision machinery, the world's bearing industry has also entered an era of comprehensive innovation in manufacturing technology, with rapidly increasing categories and increasingly improved performance and precision.
In some specific application scenarios, bearings need to bear heavy loads and impact loads at the same time, and need to rotate at high speed. Cylindrical roller bearings can have higher axial and radial load-carrying capacity by improving the design of their raceways and rolling elements. Therefore, they have become a popular choice in industries such as medium and large motors, gearboxes, generators, and various engineering machinery. Preferred bearing type for product application.
With the complexity of applications and the requirement to improve production efficiency, lightweight and efficient operation has become one of the application trends in the bearing industry. Cylindrical roller bearings also derive the design type of full complement cylindrical roller bearings under specific application conditions. Because the cage design is eliminated, the operating efficiency of the product is further improved.
In recent years, the demand for full complement cylindrical roller bearings without outer rings has been increasing in the fields of wind power drives, engineering machinery, and automobiles. In application, full complement cylindrical roller bearings without outer rings avoid the common failure mode of easy sliding caused by the clearance fit of the outer ring, and are simple to install and maintain, ensuring high reliability of operation. Therefore, full complement cylindrical roller bearings without outer rings Cylindrical bearings are widely used in the market.
Design and manufacturing process
Adhering to the corporate value of growing together with customers, ZWZ always maintains close communication and cooperation with customers. Based on customers' demands for high reliability and long life of full complement cylindrical roller bearings without outer rings, ZWZ's product development and design engineers, as part of the corporate service front desk, work hand in hand with process engineers to provide excellent services and systematic knowledge. , wholeheartedly helping customers succeed.
Product Design
1. Control the total clearance in the circumferential direction;
2. Standard formulation of amplitude circle tolerance and planetary wheel raceway tolerance and clearance;
3. Reduce the contact stress between the rolling elements and the oil groove;
4. Optimize the shape of the rolling surface of the rolling elements to reduce the contact stress with the raceway;
5. Optimize the design of the contact stress between the bearing rib and the shaft shoulder.
Process Processing and Testing
1. The double grooves are ground at one time to ensure that the amplitude circles of the double row full complement cylindrical roller bearings without outer rings are different from each other;
2. Accurately detect amplitude and circle values and mutual differences;
3. Research on controllable (material, forging, heat treatment) technology.
About ZWZ
ZWZ has 9 manufacturing bases, 10 business divisions, 26 wholly-owned and holding branch companies and subsidiaries globally.
ZWZ owns two bearing brands, ZWZ and KRW. The company adopts international standards and can produce more than 20,000 specifications of bearing products in ten categories with various precision levels from 20mm inner diameter to 16m outer diameter, which are mainly used in industrial equipments, railway transportation, automotive vehicles, wind power and special applications.
ZWZ has a national large-scale bearing engineering and technology research center, a national enterprise technology center, a bearing inspection and test center, and overseas R&D centers in Europe and the United States, that has established 8 technology innovation platforms concerning simulating calculation, materials, lubrication, inspection and so on.
CONTACT
PERSON:Liu Na
EMAIL:zwzln@zwz.cn
TEL:86 0411 62198278
ADD:No.1, Beigongji Street, Wafangdian City, Liaoning Province, China
WEB:https://www.zwz-bearing.com/en/index.html
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