What kind of slewing bearing is better for large equipment?

Slewing ring bearing is one of the common parts in large equipment. Its function is to connect the rotating part of the equipment with the stop part, so that the equipment can rotate smoothly. When selecting slewing ring bearings, the weight, speed, load and other factors of the equipment should be considered to select the appropriate bearing type. The common slewing ring bearings on the market now include cross roller type, steel ball type, sliding type and helical gear type. So in large equipment, which slewing ring bearing is better?

1. cross roller slewing ring bearing

Cross roller slewing ring bearing is now widely used in large equipment, it is characterized by the ability to accept a larger load and torque, and smooth operation, long life. Because it uses multi-row rollers, it can handle larger loads, so it has outstanding load resistance when receiving larger overturning moment, radial moment and axial moment. In addition, the cross roller slewing ring bearing disassembly and maintenance is also more convenient, suitable for various occasions.

2. steel ball slewing ring bearing

Steel ball slewing ring bearing structure is simple, light weight, cheap, commonly used in small equipment. It uses steel balls in contact with the inner and outer rings and can accept large axial, radial and overturning moments. However, because the number of steel balls is limited, it simply produces fatigue damage when receiving large loads. Therefore, it is not suitable for large-scale equipment.

3. sliding slewing ring bearing

Sliding slewing ring bearing is the use of its surface coated with special information to complete the sliding contact of a bearing type, it has outstanding self-lubricating function and sealing function, so in the use of the process to reduce energy consumption and noise. However, the bearing capacity of the sliding slewing ring bearing is relatively low, and contact fatigue and wear simply occur when receiving large loads and impact loads, resulting in shortened life expectancy.

4. helical gear slewing bearing

Helical gear slewing bearing is a bearing type that uses gear tooth surface meshing to complete transmission torque and accept load. It has the advantages of stable torque transmission, large area of radial load and axial load, and good sealing function. However, the production cost of the helical gear slewing bearing is high, and the tooth surface meshing will produce a certain amount of noise and energy loss, which is not suitable for occasions with high volume or environmental protection requirements.

In general, when using slewing ring bearings on large equipment, Xuzhou Shengjia Slewing Ring Co., Ltd. pointed out that the appropriate slewing ring bearing type should be selected according to the specific conditions of the equipment. If it is heavy equipment that accepts large loads and torques, it is recommended to choose cross roller slewing ring bearings. If it is a small equipment or do not need to accept a large load of the occasion, the choice of steel ball slewing ring bearings or sliding slewing ring bearings. The helical gear slewing bearing is suitable for a few torque and load occasions.