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Advantages of Using Double-Row Ball Slewing Bearings

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As an important member of the slewing bearing field, the double-row ball slewing bearing, with its unique structure and excellent performance, demonstrates significant advantages in numerous industrial and civil fields. It excels in terms of load-carrying capacity, stability, cost-effectiveness, and maintenance convenience.

What is Double-Row Ball Slewing Bearing?

The double-row ball slewing bearing is a type of slewing bearing. It consists of two rows of rolling elements (steel balls or rollers), and its structure includes components such as an inner ring, an outer ring, two rows of rolling elements, and a cage. Compared with slewing bearings with a single row of rolling elements, double-row ball slewing bearings have a stronger load-carrying capacity and can simultaneously withstand larger axial forces, radial forces, and overturning moments. This characteristic makes it suitable for large-scale mechanical equipment with high load requirements, such as large cranes and port handling machinery. It can ensure that the rotating parts of the equipment can still rotate stably and flexibly under heavy load conditions, thereby improving the reliability and efficiency of the equipment’s operation.

Remarkable Advantages of Double-Row Ball Slewing Bearings

One of the most prominent advantages of the double-row ball slewing bearing lies in its powerful load-carrying capacity. Composed of an inner ring, an outer ring, and two rows of steel balls, this structural design enables it to withstand axial forces, radial forces, and overturning moments simultaneously. During the operation of large port cranes, lifting heavy objects generates huge radial forces, the extension of the boom and the swing of the heavy object trigger overturning moments, and the equipment’s own gravity also brings axial forces. The two rows of steel balls of the double-row ball slewing bearing work in coordination to evenly distribute these complex and huge loads, ensuring that the slewing platform of the crane can still rotate smoothly under full load conditions. Compared with single-row ball slewing bearings, under the same size conditions, the load-carrying capacity of double-row ball slewing bearings has been significantly improved, which can meet the heavy-load operation requirements of large-scale mechanical equipment and guarantee the safety and reliability of the equipment’s operation.

Rotary stability is another significant advantage of double-row ball slewing bearings. The uniform distribution of the two rows of steel balls effectively enhances the stability of the support structure. During the slewing process of tower cranes, even when encountering interference factors such as strong winds and heavy object swaying, the double-row ball slewing bearing can, with its stable structure, reduce vibrations and displacements during the slewing process. This stability not only helps to improve the operation accuracy of the equipment but also reduces the wear of equipment components and extends the service life of the equipment. For mechanical equipment that requires high-precision operation, such as the rotary worktable of precision machining machine tools, the double-row ball slewing bearing can ensure the high-precision positioning of the worktable during the slewing process, ensuring the dimensional accuracy and surface quality of the machined parts and meeting the stringent requirements for precision in the high-end manufacturing field.

In terms of cost-effectiveness, double-row ball slewing bearings have obvious advantages. From the perspective of manufacturing costs, their structure is relatively simple. Compared with some slewing bearings with complex structures, the manufacturing process is less difficult, and the required processing equipment and processes are relatively conventional, which effectively controls the manufacturing costs. In terms of procurement costs, due to their low manufacturing costs, their prices are usually more competitive than other high-end slewing bearings with equivalent load-carrying capacities. During the use process, the low maintenance costs of double-row ball slewing bearings further enhance their cost performance. Their structural design facilitates daily inspection, lubrication, and maintenance work. For example, at construction sites, the construction environment is harsh, and the equipment is used frequently. However, the double-row ball slewing bearing is easy to disassemble and install. Maintenance personnel can easily clean, lubricate, and inspect its components, promptly discover and address potential problems, reducing the equipment downtime due to failures and maintenance costs, and improving the equipment’s use efficiency and economic benefits.

The installation convenience of double-row ball slewing bearings is also a major highlight. Its structure is compact, and the installation dimensions are highly standardized. During the assembly process of mechanical equipment, installers can quickly and accurately complete the installation work according to clear installation guidelines. Take the aerial work platform as an example. During on-site assembly, the double-row ball slewing bearing can be quickly adapted to other components, reducing the installation time and difficulty and improving the equipment’s assembly efficiency. Moreover, the standardized installation dimensions make it more convenient to maintain and replace the slewing bearing in the later stage of the equipment. There is no need to make large-scale modifications to the equipment structure, reducing the complexity and cost of maintenance.

Double-row ball slewing bearings also have good versatility. They are applicable to a variety of different types of mechanical equipment, covering multiple fields such as construction machinery, port machinery, industrial robots, and amusement facilities. In the construction machinery field, small excavators, loaders, and other equipment use double-row ball slewing bearings to meet their slewing requirements in complex working conditions; in amusement facilities, equipment such as carousels and Ferris wheels rely on double-row ball slewing bearings to achieve stable slewing movements, bringing a safe and comfortable experience for tourists; in the industrial robot field, double-row ball slewing bearings can provide stable support and flexible slewing functions for robot joints, meeting the high-precision operation requirements of robots on the production line. This wide range of versatility enables double-row ball slewing bearings to play an important role in different industries, reducing the costs and management difficulties for enterprises to stock multiple types of slewing bearings due to different equipment types.

With the continuous progress of industrial technology, the performance of double-row ball slewing bearings is also continuously optimized. By using new materials, improving manufacturing processes, and optimizing the structural design, key performance indicators such as their load-carrying capacity, stability, and service life have been further enhanced. In the future, double-row ball slewing bearings will, with their numerous advantages, be applied and expanded in more emerging fields, providing strong support for industrial development and social progress.

The Price of Double-Row Ball Slewing Bearings

There are many factors that affect the price of slewing bearings. Firstly, the raw materials. High-quality steel has a high cost, and products made from it have excellent performance and a long service life, so the price is also high. Secondly, slewing bearings with complex manufacturing processes and high precision requirements require advanced equipment and strict quality control, and their prices will also increase accordingly. Furthermore, the larger and more special the size and specifications are, the greater the processing difficulty and material consumption, and the higher the price.

Suppliers of Double-Row Ball Slewing Bearings

In the slewing bearing field, the ldb bearing company shines like a bright star globally with its excellent quality and innovation capabilities. Since its establishment in Luoyang, the bearing production base in China, in 1999, with its profound heritage and unremitting efforts, it has become a leading enterprise in the industry. Relying on excellent product quality, strong technical strength, and a complete service system, the ldb bearing company has become a benchmark in the slewing bearing industry. In the future, it is believed that it will continue to adhere to the concept of innovation and quality first and shine more brightly in the global market, contributing more to the development of various industries.

Application Scenarios of Double – Row Ball Slewing Bearings

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As an important member of the slewing bearing family, the double – row ball slewing bearing has a wide range of crucial applications in multiple fields due to its unique structure and performance characteristics. Its advantages such as simple structure and easy installation make it an ideal choice for many mechanical devices.

What is Double – Row Ball Slewing Bearing?

The double – row ball slewing bearing is a type of slewing bearing. It has two rows of rolling elements (steel balls or rollers) and its structure includes components such as an inner ring, an outer ring, two rows of rolling elements, and a cage. Compared with slewing bearings with a single row of rolling elements, double – row ball slewing bearings have a stronger load – bearing capacity and can simultaneously bear larger axial forces, radial forces, and overturning moments. This characteristic makes it suitable for large – scale mechanical equipment with high load – bearing requirements, such as large – scale cranes and port handling machinery. It can ensure that the rotating parts of the equipment can still rotate stably and flexibly under heavy – load working conditions, thereby improving the reliability and efficiency of the equipment’s operation.

Applications of Double – Row Ball Slewing Bearings

In the construction machinery field, double – row ball slewing bearings are extremely common. Small cranes are typical representatives. These cranes are often used in scenarios such as construction sites and warehouse loading and unloading. During operation, small cranes need to frequently lift and transport goods, which requires the slewing bearing to be able to bear the radial force generated by the weight of the goods and also deal with the axial force and overturning moment generated when the boom rotates. The two rows of steel balls of the double – row ball slewing bearing are evenly distributed between the inner and outer rings, which can effectively disperse these loads and ensure the stability of the crane during the lifting and slewing processes. Compared with other types of slewing bearings, it has a lower cost and a more compact structure when bearing the same load, which is very suitable for the space and cost requirements of small cranes.

The aerial work platform is also one of the important application scenarios for double – row ball slewing bearings. In aerial work such as urban construction, bridge maintenance, and street lamp installation, the aerial work platform needs to safely and stably lift workers to the designated height for operation. The slewing function of the platform is crucial, and the double – row ball slewing bearing provides reliable slewing support for it. It can enable the platform to flexibly adjust the working angle, ensuring that workers can easily reach various working positions. Moreover, the double – row ball slewing bearing has a simple structure, which is convenient for installation and maintenance. This is particularly important for aerial work platforms that need to be moved and used frequently. In narrow urban streets or construction sites, its compact structure does not take up too much space, improving the practicality of the equipment.

In small – scale wind turbines, the double – row ball slewing bearing plays an indispensable role. Wind turbines need to adjust the direction of the blades in a timely manner according to the change of the wind direction to obtain the maximum wind energy. The double – row ball slewing bearing is installed between the nacelle and the tower. It can easily cope with various forces acting on the nacelle by the wind. Its two rows of steel balls can effectively bear the axial force to ensure that the nacelle does not have axial displacement during the rotation process. At the same time, the radial force and overturning moment can also be evenly distributed to the steel balls and raceways, ensuring that the nacelle rotates stably around the tower. This slewing bearing has a simple structure and a relatively low cost, which is very suitable for the needs of small – scale wind turbines. In some remote areas or small – scale distributed energy projects, small – scale wind turbines equipped with double – row ball slewing bearings provide clean and sustainable energy for local areas.

In the amusement facilities field, double – row ball slewing bearings are also widely used. The carousel is a popular amusement facility, and its operation requires a stable slewing bearing. The double – row ball slewing bearing is installed between the central shaft and the platform of the carousel. It can bear the radial force generated by the weight of the platform and passengers, as well as the axial force and overturning moment generated during the rotation process. Its simple structure and reliable performance ensure the stability and safety of the carousel during long – term operation. In addition, amusement facilities such as Ferris wheels and pendulum rides often use double – row ball slewing bearings at key slewing parts. These facilities generate complex stress conditions during operation. The double – row ball slewing bearing, with its good load – bearing capacity and stability, provides tourists with a safe and exciting amusement experience.

In the agricultural machinery field, some equipment also uses double – row ball slewing bearings. For example, when a large – scale sprinkler irrigates farmland, it needs to rotate around the central pivot to achieve large – area irrigation operations. The double – row ball slewing bearing is installed at the pivot of the sprinkler. It can bear the weight of the sprinkler itself, the weight of the water in the pipeline, and various forces generated during operation. Its simple structure and convenient maintenance make it very suitable for use in the outdoor environment of agricultural production. In some farmlands with complex terrains, its compact structure is also convenient for the installation and movement of the equipment, improving the irrigation efficiency and providing strong support for agricultural production.

Prices of Double – Row Ball Slewing Bearings

There are many factors that affect the price of slewing bearings. Firstly, raw materials play a significant role. High – quality steel has a high cost, and products made from it have excellent performance and long service life, so the price is also high. Secondly, slewing bearings with complex manufacturing processes and high – precision requirements need advanced equipment and strict quality control, which will also increase the price accordingly. Moreover, the larger and more special the size and specifications are, the greater the processing difficulty and material consumption, and the higher the price will be.

Suppliers of Double – Row Ball Slewing Bearings

In the slewing bearing field, Ldb bearing company shines like a bright star globally with its outstanding quality and innovative capabilities. Before sales, it provides professional selection suggestions according to customer needs and can also customize products or upgrade the existing slewing structures of mainframes. During the sales process, it strictly controls the production progress and quality to ensure the on – time and high – quality delivery of products. After sales, engineers are always ready to provide technical consultation services such as installation and maintenance. Regular satisfaction surveys are also carried out to collect customer feedback and continuously improve products and services.