What are the advantages and disadvantages of three-row cylindrical roller slewing rings?

Overview of Three Row Cylindrical Roller Slewing Bearing

Three Row Cylindrical Roller Slewing Bearing is a type of bearing used in heavy machinery, particularly in cranes, excavators, and other large rotating equipment. The design of this bearing incorporates three rows of cylindrical rollers, which enhances its load-carrying capacity and provides better stability.

Features of three-row cylindrical roller slewing rings

High bearing capacity: due to the presence of three rows of cylindrical rollers, and each row of rollers bears loads in different directions, the three-row cylindrical roller slewing ring can bear large axial force, radial force and overturning moment at the same time, and the bearing capacity is higher than that of other types of slewing rings.

Good rigidity: The structural design of the three-row cylindrical rollers makes it have high rigidity, which can effectively reduce the deformation of the slewing ring when bearing the load, ensure the slewing accuracy and stability of the equipment, and is especially suitable for large mechanical equipment with high precision requirements.

Smooth operation: the cylindrical roller and the raceway are in line contact, the contact area is large, and the rolling friction is small, so the three-row cylindrical roller slewing ring is more stable in the operation process, the noise is low, the vibration is small, and the work efficiency and reliability of the equipment can be improved.

Long life: high bearing capacity, good rigidity and smooth operation, so that the three-row cylindrical roller slewing ring has a long service life under normal use conditions, reducing the maintenance and replacement cost of the equipment.

Compact structure: Under the same load capacity, the axial and radial dimensions of the three-row cylindrical roller slewing ring are relatively small and compact, which can make the design of the host equipment more compact and save installation space.

What are the advantages and disadvantages of three-row cylindrical roller slewing rings?

Three-row cylindrical roller slewing rings have the advantages of strong bearing capacity and good rigidity, but also have the disadvantages of complex structure and high cost, which are detailed below:

merit

High load-bearing capacity: The unique three-row roller structure design enables it to withstand large axial forces, radial forces and overturning moments at the same time. This carrying capacity makes it suitable for all kinds of large and heavy machinery and equipment, such as large cranes, excavators, wind turbines, etc., which need to bear huge loads during work, and the three-row cylindrical roller slewing ring can reliably support the weight and working load of the equipment and ensure the stable operation of the equipment.

High precision and high rigidity: This slewing ring can provide high slewing accuracy, ensuring that the equipment maintains an accurate position and attitude during operation. At the same time, it has good rigidity and small deformation after loading, which is particularly important for some equipment with high precision requirements, such as precision machine tools, radar antenna bases, etc., which can ensure the processing accuracy and working performance of the equipment.

Good wear resistance and fatigue resistance: The rollers and raceways of slewing rings are usually made of high-quality bearing steel, and undergo a special heat treatment process, which has high hardness and strength, and good surface wear resistance. In the long-term working process, it can withstand frequent load cycles and is not prone to fatigue wear, so as to ensure the service life and reliability of the slewing ring.

Smooth operation and low noise: The design of the three rows of cylindrical rollers makes the load evenly distributed and the rolling friction resistance is small, so it runs smoothly and has low noise during the rotation process. This is not only conducive to improving the quality of the working environment of the equipment and reducing noise pollution, but also for some equipment with high requirements for operation stability, such as medical equipment, aerospace equipment, etc., it can meet its high-precision operation requirements.

shortcoming

Complex structure and large volume: Due to the use of three-row roller structure, its internal structure is relatively complex, and the number of parts is large, resulting in a large overall volume. This can be limited when used in some space-constrained equipment, requiring a large installation space specifically designed to accommodate slewing rings.

Heavy weight: The complex structure and large volume also make the weight of the three-row cylindrical roller slewing ring heavier, which may increase the overall weight of the equipment and affect the mobility and performance of the equipment for some equipment with strict requirements for weight, such as mobile machinery and equipment, aviation equipment, etc.

High manufacturing cost: The complex structure and high-precision manufacturing requirements make the manufacturing cost of three-row cylindrical roller slewing rings high. The production process requires the use of high-precision processing equipment and advanced manufacturing processes, and the quality requirements for raw materials are also very high, as well as strict quality control and testing methods, which have led to an increase in product costs.

High installation and maintenance requirements: Precise positioning and commissioning are required during installation to ensure the installation accuracy and operational performance of the slewing ring. In the process of equipment operation, it is also necessary to regularly maintain and maintain the slewing ring, including lubrication, seal inspection, wear monitoring, etc., and the maintenance work is relatively complex, requiring professional technicians and equipment.

Three Row Cylindrical Roller Slewing Bearing Supplier

LTZC Bearings is a professional manufacturer specializing in three row cylindrical roller slewing bearings, other types of slew bearings, slew rings, slew drives and bearings parts. We are committed to supplying high quality and advanced three row cylindrical roller slewing bearings to global customers. If you are seeking reliable three row cylindrical roller slewing bearings for your project, feel free to get in touch with us.