Analyze what are the applications of slewing bearings

2020-09-29

The slewing bearing is also widely used in our lives. It is often called: "the joint of the machine". It is the relative rotary motion between two objects, and it also needs to receive axial force, radial force, and tilt together. Important transmission parts necessary for torque machinery.

The slewing ring bearing has three separate upper and lower races and radial raceways, so that the load of each row of rollers can be recognized appropriately, and it can accept various loads together. It is the largest of the four products. Kinds, shafts and radial dimensions are large and firm, especially suitable for heavy machinery requiring large diameters, such as bucket wheel excavators, special spreaders, marine cranes, ladle slewing and large-tonnage car cranes.

Bearing clearance is divided into axial clearance and radial clearance according to the measurement direction. Radial clearance is the basis for the assembly of the inner ring, outer ring and rolling elements of the bearing. It is an important technical quality requirement item in standards and other regulations, and it is also an important inspection item. From the viewpoint of the use of slewing bearings, the clearance is also one of the important technical indicators. Whether the bearing can obtain the satisfactory function is largely determined by its radial clearance. From the planning and use of slewing bearings, the clearance can be divided into: planning clearance, original clearance, device clearance and working clearance.

The slewing ring bearing has three races. The steel balls and barrier blocks can be directly discharged into the upper and lower raceways. According to the force, two rows of steel balls with different diameters are organized. This kind of open device is very convenient. The bearing angles of the road are all right angles, which can accept a large axial force and tipping moment. When the radial force is greater than 0.1 times the axial force, the raceway must be specially planned.