Advantages of Using Double-Row Ball Slewing Bearings

/in /by

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.

Unique Advantages of Three – Row Roller Slewing Bearings

/in /by

Among various types of slewing bearings, the three – row roller slewing bearing, with its distinctive structural design, exhibits a series of prominent advantages and plays an indispensable role in many key pieces of equipment in the industrial field.

What is Three – Row Roller Slewing Bearing?

The three – row roller slewing bearing is a slewing support bearing with a special structure. It mainly consists of three rows of rollers (usually cylindrical rollers), an inner ring, an outer ring, and a cage. Two rows of rollers bear the axial force, and one row bears the radial force. This design enables it to simultaneously bear large axial loads, radial loads, and overturning moments. Three – row roller slewing bearings have high load – bearing capacity, high stiffness, and high operating precision. They can adapt to harsh working environments and are often used in construction machinery such as large – scale cranes, excavators, and shield machines, as well as in some industrial equipment with high requirements for load – bearing capacity and stability, ensuring the reliable operation and precise rotation of the equipment.

Structure of the Three – Row Roller Slewing Bearing

From the perspective of structural design, the three – row roller slewing bearing is composed of three rows of rollers with different functions, which respectively bear axial forces, radial forces, and overturning moments, with a clear division of labor. One row of rollers mainly bears the axial force to ensure the stability of the equipment in the axial direction during operation; one row is responsible for bearing the radial force to maintain the precise radial position; and another row focuses on dealing with the overturning moment to prevent the equipment from tilting or overturning under complex stress conditions. This elaborate layout makes it perform outstandingly in mechanical properties. Compared with other slewing bearings, it can distribute and bear various loads more efficiently and reasonably.

Advantages of the Three – Row Roller Slewing Bearing

A strong load – bearing capacity is one of the core advantages of the three – row roller slewing bearing. In the port handling field, when giant port cranes lift extra – large containers, huge axial forces, radial forces, and overturning moments are generated. The three – row roller slewing bearing, with its special structure, can easily handle these complex and high – intensity loads and stably support the slewing motion of the crane. It can ensure that when the crane is operating at full load, the slewing platform can still rotate smoothly without shaking or displacement, greatly improving the handling efficiency and operation safety. In the wind power industry, during the operation of a wind turbine nacelle, it not only bears the radial force generated by its own weight but also has to deal with the axial force and overturning moment caused by strong wind impacts. The three – row roller slewing bearing provides reliable support for the nacelle, enabling it to rotate flexibly with the wind direction, efficiently capture wind energy, and ensure the stable operation of the wind power generation system.

Rotational accuracy is also a major highlight of the three – row roller slewing bearing. Since each row of rollers has its own function, it can precisely control the displacement and swing during the rotation process, reducing accuracy deviations caused by uneven stress. In high – precision CNC machining equipment, such as large – scale gantry milling machines, the rotational accuracy of the worktable directly affects the dimensional accuracy and surface quality of the machined parts. The three – row roller slewing bearing can ensure that the worktable maintains extremely high accuracy during high – speed rotation, keeping the machining error within a very small range and meeting the strict requirements of precision manufacturing. In the slewing devices of optical instruments, the three – row roller slewing bearing also plays a crucial role, ensuring the position accuracy of components such as lenses or mirrors during the rotation of the instrument, providing precise technical support for fields such as scientific research and medicine.

The three – row roller slewing bearing has extremely high reliability. In large – scale converters in the metallurgical industry, the working environment is harsh, with large temperature variations, strong vibrations, and impacts. The three – row roller slewing bearing, with its sturdy structure and stable performance, can operate stably for a long time, reducing the frequency of failures. Even under the dual tests of frequent tilting operations and high – temperature, heavy – load conditions, it can still maintain a good working state, reducing equipment maintenance costs and downtime and improving production efficiency. In mining machinery, such as large – scale excavators, which often operate in rugged terrains and complex working conditions, the three – row roller slewing bearing can effectively resist the impacts and vibrations caused by uneven ground, ensuring the normal operation of the excavator and extending the equipment’s service life.

In addition, the three – row roller slewing bearing also has good wear – resistance. Its rollers and raceways are usually made of high – quality steel and undergo special heat – treatment processes, resulting in high surface hardness and strong wear – resistance. During frequent rotational movements, the degree of wear is small, and it can maintain good working performance for a long time. This characteristic is particularly important in the rotary kiln equipment of the building materials industry. Rotary kilns operate continuously for long periods, and the weight and friction of the internal materials cause significant wear on the slewing bearing. The three – row roller slewing bearing, with its excellent wear – resistance, reduces the replacement frequency, lowers production costs, and ensures the continuous and stable operation of the production line.

With the continuous progress of industrial technology, the requirements for equipment performance are getting higher and higher. The three – row roller slewing bearing, with its unique advantages such as strong load – bearing capacity, high rotational accuracy, good reliability, and wear – resistance, will be widely used in more high – end equipment manufacturing fields. In the future, through continuous optimization of materials and improvement of manufacturing processes, the three – row roller slewing bearing is expected to further enhance its performance and provide more solid support for industrial development.

Prices of Three – Row Roller 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 Three – Row Roller Slewing Bearings

In the slewing bearing field, Ldb bearing company shines like a bright star globally with its outstanding quality and innovative capabilities. Since its establishment in Luoyang, China’s bearing production base, in 1999, through its profound heritage and unremitting efforts, it has become a leading enterprise in the industry. The product range of Ldb bearing company is extensive. Whether it is standard – sized or non – standard slewing bearings, it can manufacture them with high quality to meet the diverse needs of different customers. With excellent product quality, strong technical strength, and a complete service system, Ldb bearing company has already 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 supremacy, shine more brightly in the global market, and contribute more to the development of various industries.

Benefits of Using Four-Point Contact Slewing Bearings

/in /by

Four-point contact slewing bearings are widely used in many mechanical fields. This is due to a series of significant advantages brought about by their unique structural design, covering key aspects such as load-bearing capacity, space utilization, rotation accuracy, and cost-effectiveness.

What is Four-Point Contact Slewing Bearing?

The four-point contact slewing bearing is a special type of slewing bearing. Its raceways are in a special arc shape, and there are four contact points between the rolling elements and the inner and outer ring raceways, hence the name. This design enables it to withstand large axial forces and overturning moments, and it also has a certain radial load-bearing capacity. Compared with other slewing bearings, the four-point contact slewing bearing has a compact structure and occupies less space. It is often used in equipment such as aerial work platforms and small cranes. In limited installation spaces, it enables the rotating parts of the equipment to rotate flexibly and stably, helping the equipment to position accurately and operate efficiently, and providing key support for the safe and stable operation of related machinery.

Features of Four-Point Contact Slewing Bearings

Four-point contact slewing bearings perform outstandingly in terms of load-bearing capacity. Each steel ball of it has four contact points with the inner and outer ring raceways. This special structure allows it to simultaneously bear large axial forces, radial forces, and overturning moments. When a port crane is operating and needs to frequently lift and transport heavy goods, the four-point contact slewing bearing can evenly distribute these complex loads to each contact point, effectively reducing the force on a single contact point. Compared with other types of slewing bearings under the same size and material conditions, the four-point contact slewing bearing can bear a greater load. This means it can support the operation of larger and heavier equipment, ensuring that the crane can still work stably and reliably when fully loaded, and greatly enhancing the lifting capacity and operation safety of the equipment.

In terms of space utilization, four-point contact slewing bearings have prominent advantages. Their compact structure takes up little space, making them especially suitable for equipment with strict space requirements. Take industrial robots as an example. The joint parts of robots need to achieve flexible rotation and precise positioning within a limited space. The four-point contact slewing bearing can provide stable support and efficient rotation functions for robot joints without taking up too much space. This not only makes the structural design of the robot more compact and reasonable but also improves the movement flexibility and work efficiency of the robot, enabling it to complete complex tasks in a narrow working environment.

Rotation accuracy is an important indicator for measuring the performance of slewing bearings, and four-point contact slewing bearings perform well in this regard. Due to their four-point contact structure, the contact between the steel balls and the raceways is more stable, which can effectively reduce shaking and deviation during the rotation process. In high-precision optical equipment, such as the slewing device of an astronomical telescope, the requirement for rotation accuracy is extremely high. Even a slight deviation may affect the observation effect. The four-point contact slewing bearing, with its good accuracy retention, can ensure that the telescope maintains a highly accurate pointing when tracking celestial movements, providing clearer and more accurate observation data for researchers. In semiconductor manufacturing equipment, the four-point contact slewing bearing also plays a key role in ensuring the positioning accuracy and processing accuracy of workpieces during precision processing, meeting the strict requirements of the semiconductor industry for high-precision manufacturing.

From the perspective of cost-effectiveness, four-point contact slewing bearings have a high cost-performance ratio. Although their initial purchase cost may be relatively high, considering long-term use, they can save a large amount of costs for users. Due to their strong load-bearing capacity and compact structure, they can reduce the overall volume and weight of the equipment, thereby reducing the manufacturing cost of the equipment. At the same time, their good rotation accuracy and reliability reduce the maintenance cost and downtime of the equipment. In some continuous-production industrial fields, such as automotive manufacturing production lines, equipment downtime for maintenance will cause huge economic losses. The low failure rate and long service life of four-point contact slewing bearings can effectively avoid production interruptions caused by equipment failures, improve production efficiency, and create greater economic benefits for enterprises.

In addition, four-point contact slewing bearings have strong versatility and can adapt to a variety of different working environments and working conditions. Whether in harsh natural environments such as high temperature, low temperature, and humidity, or in special industrial environments such as dusty and corrosive media, by selecting appropriate materials and surface treatment processes, four-point contact slewing bearings can maintain stable performance. In high-temperature furnace equipment in the metallurgical industry, four-point contact slewing bearings made of high-temperature-resistant materials can operate normally in high-temperature environments; in chemical reaction kettle equipment, four-point contact slewing bearings with special anti-corrosion treatments can resist the erosion of corrosive media, ensuring the long-term stable operation of the equipment.

With the continuous progress of science and technology and the rapid development of industry, the requirements for the performance of mechanical equipment are getting higher and higher. Four-point contact slewing bearings, with their unique advantages in load-bearing capacity, space utilization, rotation accuracy, and cost-effectiveness, will be widely applied and further developed in more fields. In the future, with the continuous innovation of materials science and manufacturing processes, four-point contact slewing bearings are expected to further enhance their performance and provide more solid technical support for the development of various industries.

Prices of Four-Point Contact 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 Four-Point Contact Slewing Bearings

Ldb bearing company offers a wide range of products. With a processing diameter ranging from 150mm to 4000mm, it can manufacture both standard and non-standard slewing bearings with high quality to meet the diverse needs of different customers. Its products are widely used in multiple fields, demonstrating its strong capabilities. Advanced production and testing equipment are the foundation of high-quality products. Ldb bearing company deeply understands this and is equipped with nearly 30 sets of various types of equipment, providing hardware support for precision processing. At the same time, the company has an experienced design and technical team. With their profound professional knowledge and innovative spirit, they continuously optimize product designs and overcome technical problems. For example, during the research and development process, to address the balance between the load-bearing capacity and accuracy of large-scale slewing bearings, the team conducted repeated tests and simulation analyses and finally found an innovative solution, significantly improving product performance.

The Development of Three – Row Roller Slewing Bearings

/in /by

As a key component in the field of mechanical transmission, Three – Row Roller Slewing Bearings play an irreplaceable role in many industries. In recent years, they have shown a rapid development trend, demonstrating strong vitality in terms of technological innovation, application expansion, and market scale.

What is Three – Row Roller Slewing Bearings?

The Three – Row Roller Slewing Bearings is a slewing support bearing with a special structure. It mainly consists of three rows of rollers (usually cylindrical rollers), an inner ring, an outer ring, and a cage. Two rows of rollers bear the axial force, and one row bears the radial force. This design enables it to simultaneously bear large axial loads, radial loads, and overturning moments. Three – Row Roller Slewing Bearings have high load – bearing capacity, high stiffness, and high operating precision. They can adapt to harsh working environments and are often used in construction machinery such as large – scale cranes, excavators, and shield machines, as well as in some industrial equipment with high requirements for load – bearing capacity and stability to ensure the reliable operation and precise rotation of the equipment.

The Role of Three – Row Roller Slewing Bearings

In terms of technological innovation, the progress of materials science has injected strong impetus into the development of Three – Row Roller Slewing Bearings. Traditional bearing materials gradually show limitations when facing increasingly harsh working conditions, and new high – performance materials have emerged. For example, special alloy steel, with its high strength, high toughness, and excellent wear – resistance, has become an ideal material for manufacturing Three – Row Roller Slewing Bearings, significantly improving the load – bearing capacity and service life of the bearings. Ceramic materials have also begun to emerge in some high – end application fields. Their low density, high hardness, and good high – temperature resistance enable the bearings to maintain stable operation under extreme conditions such as high – speed and high – temperature.

The upgrade of manufacturing processes is also a key driving force for the technological development of Three – Row Roller Slewing Bearings. The wide application of precision processing technology has greatly improved the manufacturing accuracy of bearings. Through CNC processing equipment and advanced grinding processes, the surface roughness, dimensional accuracy, and shape accuracy of the bearing raceways are strictly controlled, effectively reducing the friction and wear between the rolling elements and the raceways and improving the rotational accuracy. The optimization of heat treatment processes cannot be ignored. Precise temperature control and cooling rate adjustment make the microstructure of the bearing material more uniform, and the performance is further enhanced.

The innovation of design concepts has given Three – Row Roller Slewing Bearings more powerful performance. Engineers use computer – aided design (CAD) and finite element analysis (FEA) technologies to conduct refined designs of the bearing structure. By simulating the stress conditions of the bearings under different working conditions, they optimize the distribution and size of the rolling elements and the shape of the raceways, so that the load – bearing capacity of the bearings is more reasonably distributed, effectively reducing local stress concentration and improving overall reliability.

From the perspective of application fields, the application scope of Three – Row Roller Slewing Bearings is constantly expanding. In the wind power industry, with the development of wind turbines towards large – scale and high – power directions, higher requirements are placed on the load – bearing capacity and reliability of bearings. With its strong comprehensive load – bearing capacity, the Three – Row Roller Slewing Bearings has become a key component of the main shaft, yaw, and pitch systems of large – scale wind turbines, providing reliable guarantee for the stable operation of the turbines. In the construction machinery field, such as large – scale cranes, excavators, and shield machines, Three – Row Roller Slewing Bearings are widely used in slewing mechanisms. They can bear huge axial forces, radial forces, and overturning moments, ensuring the efficient operation of the equipment under complex working conditions. In the metallurgical industry, large – scale equipment such as blast furnace top equipment and continuous casters also rely on Three – Row Roller Slewing Bearings. Their excellent performance in high – temperature, heavy – load, and harsh environments ensures the continuity and stability of metallurgical production.

In the market, the Three – Row Roller Slewing Bearings market shows a booming development trend. With the recovery of the global economy and the acceleration of the industrialization process, the demand for mechanical equipment in various industries continues to grow, driving the steady expansion of the Three – Row Roller Slewing Bearings market scale. According to market research institutions, the global Three – Row Roller Slewing Bearings market is expected to maintain a certain growth rate in the next few years, and the market potential of emerging economies is particularly huge. In China, with the promotion of the “Made in China 2025” strategy and the rise of the high – end equipment manufacturing industry, the demand for high – performance Three – Row Roller Slewing Bearings is increasing. Domestic enterprises are constantly increasing R & D investment and technological innovation, gradually breaking the monopoly of foreign enterprises in the high – end bearing field, and the market share is gradually increasing.

Prices of Three – Row Roller 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 Three – Row Roller Slewing Bearings

Ldb bearing company also excels in quality control. Every link from the incoming inspection of raw materials to the delivery of finished products is strictly controlled. Raw materials are multi – dimensionally tested to ensure their compliance with quality standards. During the production process, every processing step is strictly inspected, and detailed records are kept. Before the finished products leave the factory, comprehensive performance tests are carried out, and only products that fully meet the standards can enter the market. In terms of service, Ldb bearing company is also remarkable. 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. With excellent product quality, strong technical strength, and a complete service system, Ldb bearing company has already 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 supremacy, shine more brightly in the global market, and contribute more to the development of various industries.

The Future of Magnetic slewing Bearings

/in /by

In the rapid development of modern industry and technology, Magnetic slewing Bearings, as an innovative non – contact transmission technology, are gradually emerging in multiple special fields with their unique working principles and excellent performance. They have become a key driving force for promoting technological upgrades in related industries.

What is Slewing Bearing?

The slewing bearing is a large – scale bearing that can withstand comprehensive loads and is used to support and enable relative rotation between mechanical components. It generally consists of an inner ring, an outer ring, rolling elements, and a cage. Slewing bearings can simultaneously bear axial forces, radial forces, and overturning moments. They are widely used in large – scale machinery such as cranes, excavators, and wind turbines. In cranes, it enables the boom to rotate smoothly for accurate lifting and handling of goods; in wind turbines, it allows the nacelle to flexibly align with the wind direction. With its stable and flexible rotation characteristics, the slewing bearing ensures the normal operation of equipment, improves work efficiency and reliability, and is an indispensable key component in large – scale machinery.

Working Principle of Magnetic slewing Bearings

The working principle of Magnetic slewing Bearings is based on the basic laws of electromagnetism. It mainly consists of electromagnets, sensors, and controllers. The electromagnets generate a controllable magnetic field. When the rotor (the object being supported) placed in the magnetic field is disturbed by an external force and deviates from its equilibrium position, the sensor quickly detects the displacement change of the rotor and transmits the signal to the controller. The controller precisely adjusts the magnitude and direction of the current in the electromagnet according to the received signal, thereby changing the magnetic field strength and distribution. This generates a magnetic force opposite to the disturbing force, causing the rotor to return to the equilibrium position, thus achieving non – contact support and stable operation.

Significant Advantages of Magnetic slewing Bearings

Compared with traditional mechanical slewing bearings, Magnetic slewing Bearings have significant advantages. Due to the absence of mechanical contact, Magnetic slewing Bearings fundamentally eliminate friction and wear, greatly reducing energy losses, improving transmission efficiency, and reducing component replacement and maintenance costs caused by wear. In addition, they can adapt to extremely high rotational speeds and generate minimal vibration and noise during operation, which is crucial for equipment with strict requirements for accuracy and stability. In a vacuum environment, the lubrication problem of traditional bearings is difficult to solve, while Magnetic slewing Bearings do not require lubrication, avoiding pollution of the vacuum environment by lubricant volatilization and demonstrating good adaptability.

Key Applications in High – Speed Rotating Equipment

In the field of high – speed rotating equipment, Magnetic slewing Bearings have become a core technical support. In the case of high – speed motors, as the industrial requirements for motor speed and efficiency continue to increase, traditional bearings limit further breakthroughs in motor performance. The application of Magnetic slewing Bearings liberates high – speed motors from the constraints of mechanical friction, significantly increasing the rotational speed and enhancing the power density. They are widely used in aerospace, electric vehicles, high – speed machining, and other fields. For example, in the auxiliary power unit of an aircraft engine, a high – speed motor with Magnetic slewing Bearings can more efficiently provide electricity and compressed air for the aircraft, improving the overall performance of the aircraft. In the field of centrifugal compressors, Magnetic slewing Bearings also play a crucial role. Centrifugal compressors are widely used in industries such as petrochemical and natural gas transportation, and have extremely high requirements for reliability and efficiency. The non – contact support characteristic of Magnetic slewing Bearings effectively reduces the internal friction and energy consumption of compressors, improves the compression efficiency, extends the equipment service life, and reduces the risk of production interruptions caused by equipment failures.

Important Value in Vacuum Environments

The vacuum environment is another important application scenario for Magnetic slewing Bearings. In semiconductor manufacturing equipment such as lithography machines and etching machines, the requirements for environmental cleanliness and equipment accuracy are almost stringent. The volatilization of lubricants from traditional bearings can contaminate the vacuum environment and affect the manufacturing quality of semiconductor chips. Magnetic slewing Bearings do not require lubrication and produce no particles, which can meet the ultra – high cleanliness requirements. At the same time, their high – precision support characteristics ensure that the equipment operates stably at the nanometer – level accuracy, providing strong support for the development of the semiconductor industry towards higher – process technologies. In the field of space exploration, various precision instruments in satellites and spacecraft need to operate stably in a vacuum and microgravity environment. Magnetic slewing Bearings, with their non – contact, non – lubrication, and high – reliability characteristics, provide an ideal support solution for these instruments. For example, in the inertial navigation system of a satellite, a gyroscope supported by Magnetic slewing Bearings can more accurately measure the attitude change of the satellite, improving the navigation accuracy and ensuring that the satellite can complete various tasks in the complex space environment.

Future Prospects of Magnetic slewing Bearings

With the continuous progress of science and technology, Magnetic slewing Bearings have broad prospects for future development. At the technical research and development level, further improving the load – bearing capacity and stiffness of Magnetic slewing Bearings is a key direction. By optimizing the electromagnetic structure design, using new magnetic materials, and improving the control algorithm, it is expected to enable Magnetic slewing Bearings to be more widely used in the heavy – load field. At the same time, enhancing the dynamic response performance of Magnetic slewing Bearings so that they can quickly and accurately adjust the support force under more complex working conditions will expand their application boundaries in the fields of high – speed and high – precision motion control. From the perspective of market applications, with the booming development of strategic emerging industries such as new energy vehicles, high – end equipment manufacturing, and semiconductors, the demand for Magnetic slewing Bearings will continue to grow. Especially in the electric drive systems of new energy vehicles, Magnetic slewing Bearings are expected to replace traditional bearings, improving motor efficiency and vehicle range, and becoming an important breakthrough point for future new energy vehicle technology upgrades.

Prices of 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 Slewing Bearings

The products of Ldb bearing company cover a wide range. Whether it is standard – sized or non – standard slewing bearings, they can be manufactured with high quality to meet the diverse needs of different customers. Advanced production and testing equipment are the foundation of high – quality products. Ldb bearing company deeply understands this and is equipped with nearly 30 sets of various types of equipment, providing hardware support for precision processing. At the same time, the company has an experienced design and technical team that continuously optimizes product designs and overcomes technical problems. In the future, it is believed that it will continue to adhere to the concept of innovation and quality supremacy, shine more brightly in the global market, and contribute more to the development of various industries.

Advantages of Double Row Different Diameter Ball slewing bearing

/in /by

Double Row Different Diameter Ball slewing bearing is an important member of the slewing bearing family. Thanks to its unique structural design, it exhibits significant advantages in numerous industrial fields, performing outstandingly in aspects such as load – bearing performance, space utilization, operational stability, and wide adaptability to application scenarios.

What is Double Row Different Diameter Ball slewing bearing?

The Double Row Different Diameter Ball slewing bearing, also known as the double-row slewing bearing with non-equal-diameter balls, is a type of slewing bearing. It has three raceways. The upper and lower rows of steel balls and spacers can be directly inserted into the raceways, and the diameters of the two rows of steel balls are different. This structure enables the load-bearing angles of its upper and lower circular arc raceways to be both 90°, allowing it to withstand extremely large axial forces and overturning moments. It has relatively large axial and radial dimensions and a firm structure. It is often used in handling machinery such as tower cranes and truck cranes with a medium or larger diameter. When these devices are in operation, it ensures the stable and flexible rotation of the rotating parts, bears various complex loads, and maintains the normal operation of the equipment.

Characteristics of Double Row Different Diameter Ball slewing bearing

In terms of load – bearing capacity, Double Row Different Diameter Ball slewing bearing has obvious advantages. Its double – row ball design with different diameters enables a more reasonable load distribution. Larger – diameter balls can bear greater radial forces and overturning moments, while smaller – diameter balls play an important role in bearing axial forces. When a large – scale port crane is operating, the equipment needs to withstand the huge radial force generated by lifting heavy objects, the overturning moment caused by the extension of the boom and the swing of the heavy object, as well as the axial force brought by the equipment’s own weight. Double Row Different Diameter Ball slewing bearing can skillfully distribute these complex loads to balls of different diameters. Through their coordinated action, the overall load – bearing capacity is effectively improved. Compared with single – row ball slewing bearings, it can bear a greater load within the same spatial dimensions, or reduce the volume and weight of the slewing bearing when bearing the same load. This is of great significance for the lightweight design and efficient operation of large – scale equipment.

In terms of space utilization, Double Row Different Diameter Ball slewing bearing shows unique advantages. In some application scenarios with extremely high requirements for equipment compactness, such as small – scale wind turbines, the limited nacelle space requires the installation of an efficient slewing bearing. By ingeniously designing double – rows of balls with different diameters, this slewing bearing can significantly improve the load – bearing capacity and rotational stability without increasing the radial dimensions too much. Compared with other slewing bearings with equivalent load – bearing capacities, it occupies less space, providing more possibilities for the layout of other components inside the equipment. This helps to achieve the miniaturization and integrated design of the equipment, improving the overall space utilization and compactness of the equipment.

Operational stability is another prominent advantage of Double Row Different Diameter Ball slewing bearing. Due to the different diameters of the balls and their double – row distribution, during the rotation process, they can better adapt to load changes and unevenness. When the equipment is subjected to impact loads or vibrations, balls of different diameters can buffer and absorb energy through different deformations and displacements, reducing the impact on the overall structure. When a tower crane on a construction site is operating, it often encounters the impact of suddenly lifting heavy objects and the vibration caused by the wind. Double Row Different Diameter Ball slewing bearing can effectively alleviate the impact of these external forces on the equipment’s slewing system, ensuring that the rotation of the boom is smooth and avoiding shaking or jamming. This improves the safety and stability of equipment operation and is also conducive to improving construction accuracy and efficiency.

This type of slewing bearing also has strong adaptability to different working conditions. It can maintain good performance in harsh environments such as high – temperature, low – temperature, and dusty conditions. In high – temperature environments, for example, in the converter equipment of the metallurgical industry, the slewing bearing needs to operate normally under the influence of high – temperature radiation and hot air currents. Double Row Different Diameter Ball slewing bearing uses special high – temperature – resistant materials and lubrication systems, combined with its reasonable structural design, to effectively resist the impact of high temperatures on the balls and raceways, ensuring the smooth rotation. In low – temperature environments, such as polar scientific research equipment, by optimizing the low – temperature performance of materials and the sealing structure, it can prevent the balls and raceways from becoming brittle or freezing due to low temperatures, ensuring that the equipment can still operate reliably under extremely low – temperature conditions. In dusty environments, such as mining equipment, its good sealing design and structural stability can effectively prevent dust from entering the interior, reducing wear and extending the service life.

In terms of precision retention, Double Row Different Diameter Ball slewing bearing also performs outstandingly. In precision equipment, such as optical tracking instruments, extremely high requirements are placed on rotational accuracy. By precisely controlling the diameter tolerances of the balls and the installation accuracy, as well as optimizing the processing technology of the raceways, this slewing bearing can maintain stable rotational accuracy during long – term use. The cooperation of balls with different diameters further reduces the clearance and shaking during the rotation process, providing a high – precision rotation foundation for the equipment. This ensures that optical instruments can accurately track targets and meet the high – precision requirements in scientific research and production.

Price of Double Row Different Diameter Ball slewing bearing

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.

Supplier of Double Row Different Diameter Ball slewing bearing

In the slewing bearing field, Ldb bearing company shines like a bright star globally with its outstanding quality and innovative capabilities. Advanced production and testing equipment are the foundation of high – quality products. Ldb bearing company deeply understands this and is equipped with nearly 30 sets of various types of equipment, providing hardware support for precision processing. At the same time, the company has an experienced design and technical team. With their profound professional knowledge and innovative spirit, they continuously optimize product designs and overcome technical problems. With excellent product quality, strong technical strength, and a complete service system, Ldb bearing company has already become a benchmark in the slewing bearing industry.

Application Scenarios of Double – Row Ball Slewing Bearings

/in /by

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.

The Importance of Cleaning for Slewing Bearings

/in /by

As a crucial component in various mechanical devices, the operating condition of a slewing bearing directly impacts the overall performance and service life of the equipment. Among the many maintenance tasks for slewing bearings, it plays a key role in reducing wear, preventing corrosion, ensuring accuracy, and minimizing the risk of malfunctions.

What is Slewing Bearing?

The slewing bearing is a large – scale bearing that can withstand comprehensive loads and is used to support and enable relative rotation between mechanical components. It typically consists of an inner ring, an outer ring, rolling elements, and a cage. Capable of simultaneously bearing axial forces, radial forces, and overturning moments, slewing bearings are widely applied in large – scale machinery such as cranes, excavators, and wind turbines. In cranes, it allows the boom to rotate smoothly for precise lifting and handling of goods. In wind turbines, it enables the nacelle to align flexibly with the wind direction. Thanks to its stable and flexible rotation characteristics, the slewing bearing ensures the normal operation of equipment, improves work efficiency and reliability, and is an indispensable key component in large – scale machinery.

Why Do Slewing Bearings Need to Be Cleaned?

During operation, slewing bearings inevitably come into contact with various impurities, such as dust, dirt, and metal shavings. Once these impurities enter the interior of the slewing bearing, they will exacerbate the friction between the rolling elements and the raceways. For example, at construction sites, there is a large amount of dust around the slewing bearings of cranes. If not cleaned in a timely manner, dust particles can embed in the contact surfaces of the rolling elements and raceways. Like sandpaper, they will continuously scratch during rotation, leading to increased surface wear. Over time, this can cause damage such as scratches and spalling on the raceway surface, and the accuracy and surface quality of the rolling elements will also decline. Consequently, the load – bearing capacity of the slewing bearing will be reduced, and its service life will be shortened. Regular cleaning can effectively remove these impurities, reduce friction and wear, and ensure the long – term stable operation of the slewing bearing.

Many slewing bearings operate in harsh environments where corrosive media such as moisture and chemicals may be present. Cleaning is crucial for preventing slewing bearings from being corroded. Moisture is one of the common causes of corrosion. If moisture remains on the surface of a slewing bearing, the metal components are prone to rusting under the action of oxygen. This is especially true in coastal areas or humid industrial environments. The erosion of chemicals is more complex and destructive. For example, slewing bearings in chemical production equipment may come into contact with acidic or alkaline substances, which can quickly corrode the metal surface. By cleaning in a timely manner to remove surface moisture and corrosive media and taking appropriate protective measures (such as applying anti – rust oil), the corrosion rate can be significantly slowed down, the metal structure of the slewing bearing can be protected, and its mechanical properties and dimensional accuracy can be maintained.

The accuracy of slewing bearings is essential for the normal operation of equipment, and cleaning is an important part of ensuring accuracy. The accumulation of impurities can affect the rotation accuracy of slewing bearings, causing problems such as shaking and deviation during equipment operation. Take precision machine tools as an example. Even a slight deviation in the accuracy of the slewing bearing can affect the dimensional accuracy and surface quality of the machined parts. If there are impurities attached to the slewing bearing, during rotation, these impurities will change the movement trajectory of the rolling elements, thereby reducing the rotation accuracy of the machine tool spindle. Regularly cleaning the slewing bearing can ensure its surface and internal cleanliness, maintain the good fit between the rolling elements and the raceways, and ensure that the equipment operates with high precision.

Malfunctions of slewing bearings can lead to equipment downtime, resulting in a series of problems such as production interruptions and increased maintenance costs. Proper cleaning is an effective way to reduce the risk of slewing bearing malfunctions. Wear and corrosion caused by impurities are among the main reasons for slewing bearing failures. Through cleaning, surface damage and potential problems of the slewing bearing, such as minor scratches and corrosion spots, can be detected in a timely manner. When problems are in their initial stage, corresponding repair measures can be taken to prevent them from worsening and causing serious malfunctions. In addition, cleaning work can be combined with other maintenance and inspection tasks, such as lubrication checks and bolt tightening inspections, to comprehensively ensure the good operating condition of the slewing bearing, reduce the equipment failure rate, improve production efficiency, and minimize economic losses.

For slewing bearings, cleaning is by no means a dispensable task. Instead, it is the key to ensuring stable performance, extending service life, and guaranteeing the normal operation of equipment. Equipment operators and maintenance personnel should fully recognize the importance of cleaning work, develop a scientific and reasonable cleaning plan, and strictly follow the specifications for operation. At the same time, by combining other maintenance measures such as regular lubrication, inspection, and maintenance, slewing bearings can be comprehensively taken care of to keep them in good working condition at all times, providing a solid guarantee for the efficient operation of various mechanical devices and promoting the smooth progress of industrial production.

Prices of 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 require 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 Slewing Bearings

Ldb bearing company offers a wide range of products. Whether it is standard – sized or non – standard slewing bearings, it can manufacture them with high quality to meet the diverse needs of different customers. In terms of quality control, Ldb bearing company also excels. After obtaining the ISO 9001:2015 quality management system certification from the German TUV certification company in 2019, every link from raw material incoming inspection to finished product delivery is strictly controlled. The raw materials are multi – dimensionally tested to ensure their compliance with quality standards. With excellent product quality, strong technical strength, and a complete service system, Ldb bearing company has already become a benchmark in the slewing bearing industry.

Slewing Bearings VS Slewing Drives

/in /by

In the field of mechanical transmission, both slewing bearings and slewing drives are important devices for achieving the rotational movement of components. They have obvious differences in many aspects, but are also closely related.

What is Slewing Bearing?

The slewing bearing mainly functions to support and transmit loads. It is a mechanical component that enables relative rotational movement of components and is also known as a turntable bearing. It usually consists of an inner ring, an outer ring, rolling elements (such as steel balls, rollers), and a cage. The core function of a slewing bearing is to simultaneously bear axial forces, radial forces, and overturning moments, providing a stable foundation for the rotational movement of equipment. In a crane, the slewing bearing is installed between the slewing platform and the chassis of the crane. It bears the entire weight of the upper structure of the crane and various loads generated when lifting heavy objects, ensuring that the boom can rotate flexibly. In a wind turbine, the slewing bearing supports the nacelle, allowing it to rotate with the wind direction to efficiently capture wind energy.

What is Slewing Drive?

The slewing drive is a rotational device integrated with a driving device. It combines components such as a power source (such as a motor), a reducer, and a slewing bearing into one unit. In addition to having a supporting function, it can also provide power for rotational movement. The slewing drive uses the power output from the motor, which is decelerated and torque – increased by the reducer, and then drives the inner or outer ring of the slewing bearing to rotate, achieving the rotational motion of the equipment. In the rotating workstations of automated production lines, the slewing drive can precisely control the rotation angle and speed of the workstations to meet the requirements of the production process. In some small – scale construction machinery, such as small excavators and small loaders, the slewing drive provides reliable rotational power for the equipment with its compact structure and convenient installation method.

Features of Slewing Bearings and Slewing Drives

In terms of structural composition, the structure of a slewing bearing is relatively simple. Its focus is on realizing the functions of load – bearing and support, and each component is designed around the basic requirements of load – bearing and rotation. The slewing drive, on the other hand, is more complex. It integrates multiple functional modules such as power output, speed reduction transmission, and support rotation. Its internal structure is compact and highly integrated. The slewing drive integrates components such as motors, reducers, and slewing bearings in a limited space, which requires higher design and manufacturing processes.

In terms of functional characteristics, the slewing bearing emphasizes load – bearing capacity. It can bear large axial forces, radial forces, and overturning moments to ensure the stability of the equipment during rotation. Different types of slewing bearings, such as single – row ball type, double – row ball type, and four – point contact type, have different load – bearing capacities and applicable working conditions depending on their structural differences. The slewing drive, however, places more emphasis on driving performance. It can precisely control the rotation speed and angle to achieve automated and precise rotational movement. Some high – precision slewing drives can achieve an angle control accuracy of ±0.01°, and the rotation speed can be flexibly adjusted within a wide range.

Their application scenarios also vary. Slewing bearings are widely used in various large – scale construction machinery, industrial equipment, and heavy – duty machinery. These devices usually need to bear huge loads, and thus have extremely high requirements for the load – bearing capacity of slewing bearings. In port handling equipment, large – scale tower cranes, shield machines, and other equipment, slewing bearings are indispensable key components. Slewing drives are often used in occasions where compact spatial layout, high rotation accuracy, and high automation are required, such as industrial robots, automated production lines, and solar tracking systems. In the joint parts of industrial robots, the slewing drive enables the robot’s arm to rotate quickly and precisely to complete complex operation tasks.

The Connection between Slewing Bearings and Slewing Drives

Although there are many differences between slewing bearings and slewing drives, they are also closely related. The slewing bearing is an important component of the slewing drive, providing the basic structure for rotation and load – bearing capacity. Without a reliable slewing bearing, the slewing drive cannot stably achieve rotational movement. The slewing drive, in turn, imparts power to the slewing bearing, enabling it to rotate as required. The two cooperate with each other to form the rotational movement unit of the mechanical system. In practical applications, depending on different working conditions, it is often necessary to reasonably match the slewing bearing and the slewing drive. For heavy – load and low – speed occasions, a slewing bearing with strong load – bearing capacity can be selected, paired with a slewing drive with an appropriate power. For light – load and high – precision – requirement occasions, a compact and high – precision slewing drive can be chosen, and the internal slewing bearing also meets the requirements of high precision accordingly.

With the continuous development of mechanical manufacturing technology, both slewing bearings and slewing drives are constantly innovating. Slewing bearings are evolving towards higher load – bearing capacity, longer service life, and more compact structures. Slewing drives are making continuous breakthroughs in improving accuracy, increasing transmission efficiency, and enhancing intelligent control. In the future, the degree of integration of the two may be further improved to form more efficient and intelligent rotational movement solutions, meeting the continuously upgrading industrial requirements and promoting the mechanical industry to move towards high – end and intelligent development.

Prices of 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 Slewing Bearings

Advanced production and testing equipment are the foundation of high – quality products. Ldb bearing company deeply understands this and is equipped with nearly 30 sets of various types of equipment, providing hardware support for precision processing. At the same time, the company has an experienced design and technical team. With their profound professional knowledge and innovative spirit, they constantly optimize product designs and overcome technical problems. With excellent product quality, strong technical strength, and a complete service system, Ldb bearing company has already 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 supremacy, shine more brightly in the global market, and contribute more to the development of various industries.

Innovation in Bearing Lubrication Technology

/in /by

Innovation in bearing lubrication technology is a crucial approach to improving mechanical transmission efficiency and reducing energy consumption. The research and development of new lubricants and the application of intelligent lubrication systems have already brought significant economic and environmental benefits to the machinery industry.

What is Slewing Bearing?

The slewing beaing is an integrated power transmission device that combines the functions of a slewing bearing and a drive system. It mainly consists of components such as a motor, a reducer, a slewing bearing, and a brake. The motor provides power, which is decelerated and torque – increased by the reducer and then drives the slewing bearing to rotate, enabling the circular motion of equipment components. The slewing beaing can precisely control the rotation angle and speed, and has the advantages of a compact structure, convenient installation, and high transmission efficiency. It is commonly used in fields such as solar tracking systems, industrial robots, and port machinery. In a solar tracking system, the slewing beaing can accurately adjust the angle of the solar panel according to the position change of the sun, improving the solar energy utilization rate and effectively enhancing the working performance and automation level of the equipment.

Dilemmas of Traditional Lubrication Methods

Traditional bearing lubrication mostly uses mineral oil or grease, which can meet certain lubrication requirements under normal working conditions. However, under extreme conditions such as high – speed, heavy – load, and high – temperature, their limitations become prominent. Mineral oil is prone to oxidation and deterioration at high temperatures, resulting in a decline in lubrication performance and an increase in the friction coefficient. This not only reduces the transmission efficiency but also shortens the bearing life due to excessive wear. Grease has poor fluidity during high – speed operation, making it difficult to achieve full lubrication and likely to cause local overheating, further increasing energy consumption. Therefore, it is urgent to develop new lubricants.

Synthetic Lubricants: The “New Favorites” in the Lubrication Field

Advantages and Applications of Synthetic Ester Lubricants

In recent years, synthetic lubricants have become a research hotspot, and synthetic ester lubricants have performed particularly well. They have excellent thermal stability, low volatility, and good lubrication performance, showing significant advantages under high – temperature and high – speed conditions. They can form a more stable and thinner lubricating film on the bearing surface, effectively reducing the friction resistance and greatly improving the transmission efficiency. For example, in the high – speed bearings of aircraft engines, the use of synthetic ester lubricants can significantly reduce the energy loss caused by friction, improve the fuel efficiency of the engine, and reduce carbon emissions.

Characteristics and Value of Polyalphaolefin (PAO)

Polyalphaolefin (PAO) is also a synthetic lubricant with excellent performance. Its characteristics of a low pour point and a high viscosity index enable it to maintain good fluidity in low – temperature environments, ensuring normal bearing lubrication. At high temperatures, its viscosity changes little, and it can maintain a stable lubrication effect. Using PAO lubricants in the gearbox bearings of wind turbines can not only reduce the friction torque during low – temperature startup and decrease energy consumption but also ensure reliable bearing lubrication during high – temperature operation and extend the equipment maintenance cycle.

Intelligent Lubrication Systems: Ushering in a New Era of Lubrication

Working Principle of Intelligent Lubrication Systems

In addition to new lubricants, intelligent lubrication systems have brought a revolutionary change to bearing lubrication technology. The traditional fixed – time and fixed – quantity lubrication method cannot be adjusted in real – time according to the actual operating conditions of the bearing, which is likely to lead to waste of lubricants or insufficient lubrication. Intelligent lubrication systems use sensors, controllers, and actuators to achieve precise monitoring and control of the bearing lubrication state. The sensors are installed at key positions of the bearing to collect parameters such as temperature, speed, and load in real – time. The controller uses advanced algorithms to accurately calculate the required lubricant quantity and time based on these data and then controls the actuator to supply oil precisely, ensuring that the bearing is always in the optimal lubrication state.

Application Results of Intelligent Lubrication Systems in Large – Scale Equipment

In large – scale industrial equipment, such as mining equipment, intelligent lubrication systems show their full advantages. Such equipment operates in harsh environments with frequent load changes, and traditional lubrication methods are difficult to meet the requirements. Intelligent lubrication systems can dynamically adjust the lubrication strategy according to the actual operating conditions of the equipment, which can not only reduce the consumption of lubricants but also reduce the equipment failure rate and improve production efficiency. For example, after an electric – wheel dump truck in a large open – pit mine adopted an intelligent lubrication system, the lubrication effect of the wheel – side reducer bearings was significantly improved, the number of maintenance times was greatly reduced, the vehicle operation efficiency increased by 15%, and the lubricant consumption decreased by 30%.

Extended Functions of Intelligent Lubrication Systems

Intelligent lubrication systems can also be integrated with the equipment remote monitoring system to achieve remote diagnosis and fault warning. By analyzing the lubrication data, potential bearing fault hazards can be detected in advance, and maintenance measures can be taken in a timely manner to avoid huge losses caused by sudden equipment failures.

Future Blueprint of Lubrication Technology

With the development of emerging technologies such as the Internet of Things, big data, and artificial intelligence, there is broad space for innovation in bearing lubrication technology. In the future, the research and development of lubricants will pay more attention to green environmental protection and multi – function integration. For example, products with functions such as lubrication, anti – wear, and self – repair will be developed to further improve the comprehensive performance of bearings. Intelligent lubrication systems will develop towards intelligence, networking, and collaboration, realizing the sharing and optimized allocation of lubrication resources among multiple devices and constructing an efficient and energy – saving industrial lubrication ecosystem.

Prices of Slewing Bearings

There are many factors affecting the prices 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, thus having a high price. 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 Slewing Bearings

Advanced production and testing equipment are the foundation of high – quality products. Ldb bearing company deeply understands this and is equipped with nearly 30 sets of various types of equipment,providing hardware support for precision processing. At the same time, the company has an experienced design and technical team. With their profound professional knowledge and innovative spirit, they continuously optimize product designs and overcome technical problems. In terms of services, Ldb bearing company is also remarkable. It strictly controls the production progress and quality to ensure the on – time and high – quality delivery of products. 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.