Slewing bearing is a kind of large bearing that can bear comprehensive load, and can bear large axial and radial load and overturning moment at the same time.slewing bearingAlso called turntable bearings, it is also called: rotary bearings, rotary bearings. Slewing bearings are widely used in real industry and are called "joints of machines". Two objects need to do relative rotary motion, while bearing axial force, radial force and tilt moment, is an important transmission part of the machine. With the rapid development of the machinery industry, slewing bearings have been widely used in marine equipment, construction machinery, light industrial machinery, metallurgical machinery, medical machinery, industrial machinery and other industries.

The material of the slewing bearing: the nature and quality of the raw material is very important.slewing bearingThe performance and service life ofslewing bearingMaterial, BRS usually uses 50Mn or 42CrMo as raw materials. 50Mn is a carbon structural steel, which has high strength, elasticity and hardness, and is often used after quenching and tempering. 50Mn has poor welding performance, overheating sensitivity and temper brittleness tendency. 50Mn is usually used to manufacture parts with high requirements for wear resistance and load-bearing capacity, such as gears, gear shafts, etc. 42CrMo is an alloy steel, very suitable for forging, it has high strength, high hardenability and good toughness. 42CrMo quenching deformation is small, high temperature creep strength and high durability. Compared with 50Mn, 42CrMo has better fatigue strength, but the cost is higher.

Installation of slewing bearing: during installationslewing bearingCheck the mating surfaces before. The parts supporting the turntable bearing shall have sufficient rigidity, and the mating surface shall be processed to meet the flatness and inclination required by the relevant standards. Each set of slewing bearings will be marked with quenching soft belt "S", and the soft belt should be placed in the non-bearing area during installation. When installing, first position the bearing radially, then tighten the mounting bolts crosswise, and check the rotation of the slewing bearing. In order to ensure the stable rotation of the turntable bearing, the gear should be checked before the installation bolts are fully tightened, and the prestress of the tightened bolts should be 70% of the yield limit of the bolt material. of BRSslewing bearingIt has been lubricated before leaving the factory. Generally, after the bearing is installed and put into operation for 100 hours, the grease should be checked and replenished, and then repeated every 500 hours of continuous operation. When the turntable bearing works under high temperature environment, the replenishment cycle of grease should be shortened appropriately. When the bearing is stored for a long time or the machine stops running for a long time, grease should also be added.

Application of slewing bearing: widely used in lifting machinery, mining machinery, construction machinery, port machinery, ship machinery, high-precision radar antenna pedestal, wind turbine and other large rotary equipment. At the same time, we can also design, develop and produce various special structure slewing bearings according to the specific requirements of users.