Manufacturers of precision bearings precision bearings Luoyang Bearing Co., Ltd. Ma Ma Luoyang Bearing Co., Ltd. is a professional manufacturer of needle roller bearing manufacturers. Male plants produce more than 2,000 species. Imperial bearing models. The main products are: Needle roller bearings, needle roller cage assemblies, connecting rod with needle roller cage assemblies, thrust needle roller bearings, needle roller bearings entity rings, bearing roller, roller and needle curves, etc. . Widely used in automobiles, trucks, tractors, motorcycles, scooters, electric tools, textile machinery, machine fishing nets, agricultural machinery, printing machinery, engineering machinery, fitness and entertainment equipment, logistics systems and automatic instrumentation and other fields. Bearing products exported to Europe, Asia and many other countries and regions, deeply domestic and foreign customers. Slewing ring is nearly four decades in the world gradual rise of new mechanical parts, it has inner and outer rings, rolling, etc., at present, China's production of slewing stereotypes, mainly in the early 1980s designated by the Ministry of Machinery Industry, Tianjin Engineering Institute of Mechanical former Federal Republic of Germany to introduce the organization Rothe Erde's design and manufacturing technology. December 20, 1984 released the People's Republic of China Ministry of Machinery Industry Standards: JB/2300-84 "slewing Types, basic parameters and technical requirements", mainly by the Ministry of Machinery and Electronics Industry, Tianjin Institute of Mechanical Engineering, responsible for drafting, and later the State has released a standard construction machinery in 1991: JB36.1-36.3-91, in 1999 and 2011 has released new machinery industry standard JB/2300-1999 and JB/2300-2011. Slewing ring, is able to withstand a large integrated load bearing can withstand large axial, radial load and overturning moment. Slewing ring bearings generally with mounting holes, internal gear or external gear, lubrication holes and seals, which can host design compact guide is simple, easy to maintain. Slewing ring bearings with or without gear, external gear and the gear of the four-point contact ball bearings, double row angular contact ball bearing Cross cylindrical roller bearings, tapered roller bearings and cross three-row cylindrical roller bearings four composite series, four point contact ball bearings with high static load capacity, cross-cylindrical roller has a high dynamic load capacity, cross-tapered roller bearings and preloaded bearings can have greater support rigidity and rotary precision, three-row cylindrical roller bearings due to increased carrying capacity of lead bearing height, were borne by the various forces of different races, so the force under the same circumstances, the bearing diameter can be greatly reduced, and thus have to make more compact features a host a high load carrying capacity of slewing ring bearings. Slewing ring bearings are widely used for lifting machinery, mining machinery, construction machinery, port machinery, ship equipment and precision machinery radar and missile launchers and other equipment of large rotary device. Also according to the user's specific requirements to design, develop, produce a variety of special structure slewing ring bearings. Ma Luoyang Bearing Co., Ltd. Contact: Zhuxing Li Mobile: 18736312885 Tel 0379 -62261517 Fax :0379-62260535 qq number: 252976218 Zip Code: 471000 E-mail: 252976218@qq.com Address: Luoyang, Henan Petroleum Road No. 158