Bearings for slewing bearings
On the one hand, the sealing of the turntable bearings is to prevent the leakage of the filled grease. On the other hand, it is to prevent the dust, impurities and water from invading the bearings and affect their normal work. As the slewing bearings are mostly working under heavy load and low speed, the sealing type of bearings adopts two kinds of structures: rubber sealing ring and labyrinth sealing. The rubber sealing structure itself has the advantages of simple structure, small occupied space, reliable sealing and a wide range of applications, but its deficiency is easy to early aging rubber sealing lip sealing loss at high temperature, so the work in the high temperature conditions of the rotating disc bearing should adopt the labyrinth seal.
The double volleyball type slewing bearing has large axial and radial dimensions, and has a firm structure, and is especially suitable for handling machines such as tower cranes and automobile cranes of medium diameter or more.Single row cross roller slewing bearing (slewing bearing)Hjw, composed of two seats, compact structure, light weight, high manufacturing precision, assembly gap is small, the installation of high precision roller is 1:1 cross arranged, and can bear larger axial force and radial force and overturning moment. It is widely used in lifting transportation, construction machinery and military products.Single row four point contact ball slewing bearing (slewing bearing)Single row four point contact ball bearing slewing bearing consists of two rings, compact structure, light weight, steel ball and arc raceway four points contact, can bear axial force, radial force and overturning moment.Production process flow chartRaw material: forging, machining, testing, heat treatment, grinding, grinding, grinding, grinding, grinding, grinding, grinding, grinding, grinding, grinding, grinding, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, polishing, etc..Turntable slewing bearing materials: 50Mn, 42CRMO, GCR15SIMN, 9CR18MO.Turntable slewing bearing accuracy: P0, P6, P5, P4, P2, precision from low to high, the price will be from low to high.
Three row combination roller slewing bearing (slewing bearing)The three row roller slewing bearing seat and three radial raceway respectively, so the load of each row of the rollers can be determined at the same time, can withstand a variety of load bearing capacity of four kinds of products in one of the largest, the axial and radial dimensions are larger firm structure, especially suitable for the requirements of heavy machinery with larger diameter, such as bucket wheel excavators, wheel cranes, deck cranes, ladle revolving and large tonnage truck crane machinery etc..Double row angular contact ball slewing bearing (slewing bearing)The double volleyball slewing bearing has three seat rings, and the raceway must be specially designed.
