High speed low noise slewing bearing bearings are shipped

Recently, the high-end slewing bearing for medical CT machine designed and produced by our company for customers has been successfully rolled off the production line, and all the indicators of the finished product have passed the inspection.

For the CT machine special slewing bearing, we understand the various technical requirements of the customer, and calculate the bearing capacity and service life according to this requirement. After more than a month of full technical communication, Technical parameters, confirmed the production drawings. This product has an outer diameter of 1180mm and an inner diameter of 980mm. It has a toothless four-point contact ball slewing bearing structure with P5 accuracy. It is a high-end precision slewing bearing; and because it is medical, it has extremely high requirements for noise reduction.

According to the actual working conditions of customers, our technical engineers actively improve the product processing technology, and strive to make products that meet the actual needs of customers. First, the 42CrMo quenched and tempered material is used to make the material performance better and more stable, which guarantees the product quality from the source; secondly, the product raceway and appearance are comprehensively polished to ensure high product precision; thirdly, for the product’s silent requirements, A special segmented nylon cage device is used to lock the ball in the cage pocket while ensuring that the steel ball can rotate freely, thereby reducing the noise impact caused by the free movement of the cage in the raceway. Reduce rotating noise. Through the above efforts, we ensure that the finished products of the slewing ring meet various technical requirements.


After the finished product came out, after trial assembly test, it has fully met the requirements of the confirmed drawings of both the customer and us, and the rotation is flexible and light, and the rotation is silent. At present, this product is already on the way to customers.


The vision of “Let the world fall in love with Made in China” is not only a slogan, but also implemented in practical actions. It requires countless Chinese companies to constantly challenge themselves technologically and seize the right to speak for China in the core field of manufacturing. In the era of high-tech industry, only Chinese manufacturing can win the “tough battle” and truly realize “Let the world fall in love with Chinese manufacturing!” We Hengguan people carry this great dream and actively practice it! The road is long and long, Hengguan people will persevere in pursuit! May you and I walk along this great journey…

How long does the turntable bearing grease is filled?

The turntable bearings are widely used in construction machinery and other equipment platforms. During the use of turntable bearings, the lubrication work is very important that there is no lubrication will greatly reduce the life of the bearing, to ensure that the bearing is effective, reliable, and the bearings must be sufficient. Lubrication, lubrication is the basic component of the bearing. Therefore, the filling of the grease has an important role in the normal use of the turntable bearing. So, how long does it know how long the turntable bearing grease is filled?
First, the filler of turntable bearing grease
1, fill grease
Before running the bearing machine, it is necessary to make a supplemental finale. When filled with grease, the bearing should be rotated while the bearing is filled, and the grease is uniformly distributed until the sealing strip is observed at the sealing strip of the bearing. Overflow.

Tuto bearing

2, daily automatic fetipple
After the incident, the automatic filling system can be opened, and the quantitative oil is injected daily (timing), which satisfies the normal use of the bearing, and the amount of the inclusions in the two months should at least reach the cavity volume value of the inside of the turntable bearing, in order to ensure the sufficient amount of oil Bearings, on the one hand, pay attention to the consumption of grease, on the other hand, to periodically detect oil passages to prevent leakage.
At around three months, a concentrated finale should be carried out inside the turntable bearing, and the upper row-to-mouth hole should inject a large amount of grease to the upper sealing strip, and fresh grease spillage is uniform.
Second, three row roller turntable bearing grease
The bearing structure is protruding the rolling cavity ZUI, and the upper roller grease will move in the downward roller, and the upper row grease should be appropriate, the reference value is the middle row and the lower row 130% of the amount of oxime.

Tuto bearing

Third, what are the lubricates commonly used by turntable bearing
Commonly used grease is calcium based grease, lithium-based grease, aluminum-based grease, and high temperature grease, and the user can select a suitable grease according to the particular situation.
The above is about how long to fill a solution, and the timely filling grease is important, but the regular cleaning is also important, the turntable bearing is cleaned up, and the plane of the support driver is cleaned up, and the above oil, Burring and some debris removal, there is a clean working environment before installation. Further, the turntable bearing must be added to the new grease grease or a lithium-containing lithium-containing lithium-containing molybdenum containing molybdenum.

Talking about the cold treatment process of bearing steel

The heat treatment operation of continuously cooling the quenched workpiece from normal temperature to a lower temperature to transform the retained austenite into martensite is called cold treatment. The purpose of cold treatment is to improve the hardness and wear resistance of steel, and stabilize the size of the workpiece. It is mainly used for bearings, tools and some carburized parts.


  1. Cold treatment process of bearing steel


The cold treatment of bearing steel often uses a freezer and dry ice alcohol solution. Precision bearings have higher requirements for dimensional stability; after the ring is quenched (especially staged quenching), the internal structure still retains more retained austenite. This retained austenite is an unstable structure. When storing and using the bearing In the process, changes will continue to change the accuracy of the bearing. For this reason, the cold treatment process is adopted, which can reduce the retained austenite in the structure and slightly increase the hardness of the parts.


After quenching and cooling the workpiece to room temperature, it is immediately placed in an environment below room temperature for a certain period of time, and then taken out and placed at room temperature. This treatment below room temperature is called cold treatment. The cold treatment of bearing steel often uses a freezer and dry ice alcohol solution. Stay at room temperature after quenching: After quenching, the material must be cooled uniformly inside and outside to room temperature and then cold treated, otherwise it will be easy to crack. Cold treatment immediately after cooling to room temperature (generally no more than 30min), otherwise it will stop the transformation of austenite to martensite change.


2, cold treatment temperature


The temperature of the cold treatment is mainly based on the martensitic transformation termination temperature Mf of the steel. In addition, the influence of the cold treatment on the mechanical properties and the manufacturability should also be considered. For GCr15 steel, the cold treatment is -70℃; when the precision requirements of ferrules or equipment are limited, the cold treatment temperature can be -40~-70℃; for ultra-precision bearings, it can be between -70℃~-80℃ Perform cold treatment in between. The temperature of the subcooling affects the impact fatigue and contact life of the bearing.


3, cold treatment heat preservation


Although the transformation of a large amount of martensite is completed when it is cooled to a certain temperature, in order to make the surface and core of a batch of ferrules reach the cold treatment temperature uniformly, a certain holding time is required, generally 1~1.5h.



  1. Tempering after cold treatment


The ferrule is placed in the air after cold treatment, and its temperature is slowly raised to room temperature and then tempered in time. The temperature rise should not be too fast, otherwise it is easy to crack; the tempering is timely, otherwise the larger residual stress inside the ferrule will cause the ferrule to crack, generally not more than 2h.


  1. cold treatment time


For the length of holding time of cold treatment, some scholars believe that the amount of retained austenite transformed into martensite depends only on the temperature reached by cooling, and the retention time at low temperature does not matter, because retained austenite-martensite transforms at low temperature The cooling is completed in an instant, so there is no need to keep it at a low temperature, just let the workpiece cool from the outside to the inside. It is also believed that the cold treatment time should be determined according to the thermal conductivity of the workpiece, the volume, the time required for cooling through, and the stability of the transformation of retained austenite. The retained austenite in the steel is fully transformed and is more conducive to the formation of carbide particles. After the transformation is completed, the hardness of the parts will not change significantly. Therefore, the holding time of cold treatment also needs to be reasonably controlled according to the actual situation.


In fact, there are many studies on cold treatment of bearing steel, including GCr15 steel, aviation high temperature bearing steel, carburized bearing steel, etc., except for the reduction in toughness (decreased impact toughness, 21% reduction), almost all of the research All show the many advantages of cold treatment: reduced Paralympics; increased hardness; increased wear resistance; increased tensile strength; fine carbide precipitation, increased fatigue life, etc.

Which bearings are used in wind turbines?

Wind turbines are installed in areas with windy sand or relatively high humidity in the wild. The working conditions of wind turbine bearings are very harsh, and the temperature, humidity, and load that need to be subjected to a wide range of changes. In particular, the yaw and pitch bearings need to withstand large axial forces and overturning moments, and the gearbox bearings need to withstand huge shock loads during starting and braking. At the same time, the wind turbine gearbox bearings are required to have low friction when starting at low speeds. Features of torque and high operating flexibility. There are as many as 32 sets of bearings for a wind turbine. Therefore, the selection of bearings is very important to ensure the safe and stable operation of wind turbines. So, which bearings are used in wind turbines?


Wind turbine bearings are generally divided into the following types: yaw bearings, pitch bearings, main shaft bearings, gearbox bearings and generator bearings. According to different bearing types, technical requirements are also different.


1, yaw, pitch bearing


This type of bearing is generally designed as an assembly. Single-row four-point contact ball slewing bearings or double-row four-point contact ball slewing bearings should meet the following technical requirements:


According to the force characteristics of the wind turbine bearing, the yaw bearing adopts a small clearance, and the pitch bearing adopts a four-point contact ball bearing with zero clearance or “negative clearance” design. The channel needs to be specially designed and processed to withstand large The axial load and moment load. The yaw gear in the assembly should choose the appropriate material, modulus, tooth profile and hardness to ensure the life matching with the driving gear. At the same time, targeted heat treatment measures must be taken to improve the strength of the tooth surface, so that the bearing has good wear resistance and impact resistance.


Because the fan is exposed to the field, there are strict requirements on the sealing performance of the bearing, and the sealing form of the bearing must be optimized to ensure that the life of the bearing is the same as that of the fan. Fans are installed at an altitude of more than 50m or even hundreds of meters. The assembly and disassembly costs are expensive. Therefore, they must have very high reliability. Generally, the life span of 20 years is required. In addition, the bearing structure is complicated, so the design and manufacturing requirements are extremely high.




2, spindle bearing


Spindle bearings are generally spherical roller bearings, and some have double-row tapered roller bearings with large taper angles. Most of the impeller spindles are supported by two spherical roller bearings. Because the load of the main shaft of the impeller is very large, and the shaft is very long and easy to deform, the bearing must have good centering performance.


3, gearbox bearing


There are many types of gearbox bearings, including deep groove ball bearings, cylindrical roller bearings, full complement cylindrical roller bearings, double row tapered roller bearings, spherical roller bearings, thrust spherical roller bearings and four Point contact ball bearings.


The bearings in the gearbox are mainly lubricated by the gear oil in the gearbox. There are more metal particles in the lubricating oil, which will obviously affect the life of the bearing. Therefore, a special heat treatment process is required to make the surface of the raceway have compressive stress and reduce the raceway. Sensitivity to particle impurities improves bearing life. At the same time, it is also necessary to optimize the bearing structure according to the working conditions of the bearing, improve the processing technology of the bearing, and further improve the performance index of the bearing.


4, generator bearing


The generator bearing adopts cylindrical roller bearing and deep groove ball bearing. It is necessary to reduce the noise of bearing vibration through the structural design of these two kinds of bearings, the improvement of processing methods, the cleanliness control of the production process and the optimization of related components, so that the bearing has a good low-noise performance.


The above is the answer to which bearings are used in wind turbines. The bearings used from the main shaft to the generator are collectively referred to as transmission system bearings. Most of these bearings are standard bearings in terms of structure. The difference is that in order to ensure high reliability, In addition to some special requirements in terms of materials and heat treatment, other key technologies need to be adopted.

Methods and measures to improve bearing fatigue life

Bearings are key machine parts that bear load and transmit motion. The challenges brought about by the increasing power density of modern equipment manufacturing industry have put forward higher requirements on the bearing capacity and reliability of bearings. Today, the editor will come to talk with you about methods and measures to improve bearing fatigue life.

Bearings in specific applications will fail prematurely, and their service life only accounts for 5%-10% of the calculated rated life. Many early failure bearings have a typical feature-a large-area subsurface crack network with “white etching morphology”, that is, white etching cracks.

There are many factors affecting white etching cracks, including raw materials, bearing design, lubrication, stress, surface and many other aspects. Among them, the bearing steel as a raw material, its composition design, purity, carbides, internal pores and other improper control will cause white corrosion cracks and cause early failure of the bearing. In order to obtain a high and stable fatigue life, the following aspects of the bearing steel production process must be done:

Slewing bearing

1. According to the application environment and characteristics of the bearing, select and design suitable bearing steel varieties, establish chemical composition internal control standards, and focus on the control of residual and harmful element content.

2. The oxygen content of the bearing steel, non-metallic inclusions and other purity indicators are improved through measures such as the control of the oxygen content of the steel in the primary furnace, the control of the amount of slag, the control of the slag composition, the control of the refining and pouring process, and so on.

3. According to different carbide quality requirements, choose different smelting processes such as vacuum degassing, electroslag, and self-consumption to obtain the corresponding level of carbide level. At the same time, we will do a good job in the process of temperature injection speed control, high temperature diffusion and other aspects of process optimization, to further improve the size and distribution of carbide particles, and reduce the risk of bearing fatigue life reduction caused by residual stress caused by microstructure changes.

4. For the rolling elements, the control of the microscopic pores in the bearing steel is even more important because there is no longer any thermal deformation treatment in the bearing manufacturing process. In the production process, it is necessary to focus on the control of processing methods, processing ratios, heating systems, etc.

5. Establish a complete bearing steel inspection system. On the one hand, it is necessary to formulate detailed laboratory sample preparation inspection plans, make full use of laboratory testing capabilities, objectively evaluate the physical quality level of each heat, and do a good job of high-frequency water immersion The promotion and application of new methods such as flaw detection and maximum extreme value detection; on the other hand, make full use of on-site surface and internal automatic flaw detection equipment to prevent the outflow of defective steel. Through the implementation of the above measures, the product quality level and quality stability are improved, thereby reducing the bearing white corrosion crack defects caused by raw materials.

Bearing manufacturing is a systematic engineering, and every link and step is very important. Therefore, in the design and production of bearing steel components, bearing manufacturing, heat treatment, processing and assembly, etc., qualified bearing products must be produced in strict accordance with the requirements of the standard.

Technical Difficulties of Fault Diagnosis for Ladle Turret slewing bearing

The ladle turntable is one of the important key equipment of the continuous casting machine. Once these key equipment fails, it may cause the entire production line to stop production, disrupt the normal production rhythm, and seriously affect the normal production and economic benefits of the enterprise. In the structure of the ladle turret, the ladle slewing bearing is the key component of the stable and efficient work of the ladle turret. In order to ensure the normal operation of the supporting bearings, the factory will require on-site workers to conduct high-density inspections. However, due to the harsh on-site environment, on-site inspections are difficult, which not only increases the labor intensity of the workers, but may also threaten their lives.

The fault diagnosis of ladle turret slewing bearing has the following technical difficulties:

1. The speed of the equipment is low, and the impact energy caused by bearing damage is very low; and the equipment is greatly interfered by external forces, and the noise can easily cover the bearing fault characteristics; therefore, the conventional bearing detection methods cannot effectively find the bearing damage characteristics, such as time domain analysis, frequency Domain analysis, envelope demodulation spectrum, etc.
2. The bearing is subjected to complex forces, and it bears axial force, radial force and overturning moment at the same time;
3. During the operation of the equipment, personnel are not allowed to enter due to the harsh on-site environment; and a single offline monitoring cannot effectively evaluate the mechanical state of the equipment, and the amount of data is insufficient to support the judgment of the mechanical state of the equipment;
4. It is not only necessary to judge whether the equipment is faulty, but also to predict the residual life of the bearing, guide the direction of maintenance and repair, give play to the value of the equipment, and gain time for the preparation of spare parts and spare parts;
5. In order to ensure the accuracy of vibration analysis, diagnostic personnel need to have a very high level of professionalism and rich field experience. Even if the above conditions are met, the accuracy of diagnostic analysis cannot be guaranteed.

At this stage, there is no effective detection method for the bearing, and after the hidden trouble of failure, the fault signal characteristics are not obvious, it is difficult to find the bearing failure, and there is a high probability of causing secondary damage to the equipment, resulting in increased maintenance costs, and additional costs for the enterprise economic burden.

Therefore, the condition monitoring and fault diagnosis of the ladle turret slewing bearing not only guarantees the normal production needs of metallurgical enterprises in the continuous casting process, but also promotes the reform of the equipment management system, and will surely bring huge benefits. Condition monitoring and fault diagnosis are needed to reduce maintenance workload and maintenance time.

Why do industrial robots need a reducer?

In recent years, industrial robots have ushered in explosive development, especially due to the increase in labor costs, making manufacturing companies increasingly favor the use of more mechanized, more efficient, and lower-cost robots. When it comes to robots, we have to mention one of the important components, the reducer, which is what we often call the reducer. Due to the different operating environments and performance of industrial robots, the types of reducers used are also different. So, do you know why an industrial robot needs a reducer?


The power source of an industrial robot is generally an AC servo motor. Because it is driven by a pulse signal, the servo motor itself can realize speed regulation.


Industrial robots usually perform repeated actions to complete the same process; in order to ensure that industrial robots can reliably complete process tasks in production and ensure process quality, the positioning accuracy and repeat positioning accuracy of industrial robots are very high. Therefore, to improve and ensure the accuracy of industrial robots, rv reducers or harmonic reducers are needed. Another role of precision geared motors in industrial robots is to transmit greater torque. When the load is large, it is not cost-effective to blindly increase the power of the servo motor. The output torque can be increased by a reducer within a suitable speed range.


In addition, the servo motor is prone to heat generation and low-frequency vibration under low-frequency operation, which is not conducive to ensuring accurate and reliable operation of industrial robots that work for a long time and periodically. The existence of the precision geared motor enables the servo motor to run at an appropriate speed, and accurately reduces the speed to the speed required by each part of the industrial robot, which improves the rigidity of the mechanical body while outputting greater torque. Compared with general-purpose reducers, robot joint gear motors are required to have the characteristics of short transmission chain, small size, high power, light weight and easy control. There are two main types of reducers widely used in articulated robots: rv reducers and harmonic reducers.


Industrial robots usually perform repeated actions to complete the same process; in order to ensure that industrial robots can reliably complete process tasks in production and ensure process quality, the positioning accuracy and repeat positioning accuracy of industrial robots are very high. Therefore, to improve and ensure the accuracy of industrial robots, RV reducers or harmonic reducers are needed. Another role of precision reducers in industrial robots is to transmit greater torque. When the load is large, it is not cost-effective to blindly increase the power of the servo motor. The output torque can be increased by a reducer within a suitable speed range. In addition, the servo motor is prone to heat generation and low-frequency vibration under low-frequency operation, which is not conducive to ensuring accurate and reliable operation of industrial robots that work for a long time and periodically.


The reducers commonly used in industrial robots include RV reducers and harmonic reducers. Harmonic reducers are mainly used for light-loaded parts such as forearms, wrists, and hands. The RV reducer has a large transmission ratio range, relatively stable accuracy, high fatigue strength, and higher rigidity and torque carrying capacity.


In recent years, as the market for industrial and life assistance robots continues to expand, the demand for high-precision small modulus gears in precision reducers used in the joints of robots has also increased sharply. The robot-specific slewing ring (slewing bearing) products produced by Luoyang Hengguan have the advantages of light weight, high precision, reasonable price, and excellent service; our company has a professional production line for such products, which specializes in the production of such high-precision slewing bearings. It is also one of the main product series of our company. You are welcome to call for consultation and look forward to cooperating with you.

What are the four forms of failure of slewing ring raceway

The life of the slewing ring raceway is determined by the quality of its own products and subsequent maintenance. It is even considered “three-point quality and seven-point maintenance”. The following phenomena generally occur after the raceway is damaged and failed: large gaps, oil leakage, jamming, abnormal noise, iron powder and even iron pieces on the raceway, etc. There are many reasons for the failure of the bearing. Today, the editor will introduce four common failures of the slewing ring raceway. For everyone to learn and understand.

1. The raceway is worn

The relative sliding friction between the surfaces causes the metal of the working surface to wear out continuously and cause failure. Abrasion will cause an increase in the fit clearance and a change in the shape of the raceway surface, and it will also affect the lubricating function of the lubricant, causing the bearing to lose rotation accuracy or even fail to operate normally. Raceway wear is divided into normal wear and abnormal wear. Normal wear and tear is a process in which the gap gradually increases during the full life cycle to complete the task of the full life cycle. Abnormal wear has manufacturing problems, standard parts problems, grease problems and later maintenance problems. The first three problems are related to the slewing bearing manufacturer, and the fourth situation is the problem of the equipment user.

2, plastic deformation of raceway

Under the action of external force, the partial plastic flow or overall deformation of the surface of the part, such as the deformation of the raceway or the torsion and warpage of the cage, causes the failure of the slewing bearing to fail to work normally, which is called plastic deformation failure. This situation often occurs after a period of use. At this time, the high-hardness layer has been mostly worn out. After the load and friction are suddenly increased, the metal inside and outside the raceway is squeezed into a pile. The steel with high hardenability should be used instead.

Slewing ring

3, the surface of the raceway peels off

The main reason for the surface spalling of the slewing bearing raceway is that the hardened layer is too thin and the hardness transition zone is too narrow. There are many reasons for contact fatigue failure. It may be that excessive axial load, poor lubrication, poor alignment, excessive impact load during installation, etc. can cause contact fatigue failure of the bearing. A lower frequency intermediate frequency equipment should be used to deepen the hardened layer. At the same time, it is necessary to appropriately increase the quenching and tempering hardness to reduce the hardness gradient of the raceway section.

4, raceway corrosion and pitting

The metal surface undergoes a chemical or electrochemical reaction with the environmental medium, and the surface damage caused is called corrosion failure. Corrosion is divided into three categories: chemical corrosion, electric corrosion, and fretting corrosion, which is mainly manifested as the corrosion of the internal bearing surface. Factors such as the intrusion of corrosive media, the condensation of moisture in the air, the sparks generated when the current passes, and the fretting vibrations can all cause corrosion failure of the slewing ring raceway. Pitting corrosion mainly occurs on the raceway treated by quenching and tempering. The reason is low hardness and unreasonable design of the raceway structure, causing sliding friction and contact fatigue stress, causing defects such as pitting corrosion and indentation.

The above is an introduction to the four forms of common slewing ring failures. In order to avoid such failures, reasonable and effective maintenance of the slewing ring should be carried out on a regular basis. This will not only reduce the occurrence of failures, but also increase the number of slewing rings. Service life.

How to improve the brightness of the slewing bearing surface? What is a good solution?

After the slewing ring is used for a period of time, spots or discoloration will be found on the surface, which not only affects the territory and smoothness of the bearing surface, but also directly affects the use effect and service life of the bearing. So, how to improve the brightness of the slewing bearing surface? Is there any good way to solve it? Next, let’s follow the editor to understand it.


1, electroplating

Electroplating is to deposit the required covering layer on the surface of the slewing bearing substrate through the point solution method to form a bright protective film. This method can not only improve the surface brightness of the slewing bearing, but also play a role in preventing surface rust. Electroplating can be divided into single metal electroplating, multi-layer combined electroplating, and alloy electroplating.

There are many factors that affect the quality of the coating, such as: pre-plating, the method and degree of purification of the plating solution, the rationality of the pre-plating method, the establishment of the plating solution system, the determination of the combination and the thickness, and the process parameters (PH value, temperature, current density) , Additives (brightener, leveling agent, stress reliever, wetting agent, dispersant), plating solution analysis and replenishment system, operation system, post-plating treatment (dehydrogenation, sealing), etc. Of course, this kind of electroplating layer only plays a protective role on the surface of the slewing bearing, and does not change the internal structure of the bearing. Wearing during daily use will still affect the brightness of the bearing and cause the risk of rust.


2, machine shaping

The metal surface layer is plasticized and changed by mechanical methods to improve the hardness and high-strength hardened layer, which can increase the density of strengthened dislocations on the surface of the slewing bearing, and refine the sub crystalline structure, thereby increasing its hardness and strength, and the surface is rough The degree value is reduced, so that the brightness of the bearing surface is improved from the appearance, and at the same time, the surface fatigue strength of the parts can be improved and the sensitivity of fatigue notches can be reduced.


The first two are how to improve the surface brightness of the slewing bearing before it is used, and the maintenance of the bearing surface brightness can only be done through later maintenance and cleaning during use.


Slewing ring

3, do a good job in rust prevention


(1) Clean


While the slewing ring is in use, it is necessary to choose a suitable solvent for cleaning, so that it will not damage the rust prevention process of the slewing ring surface, and will not cause serious corrosion. Cleaning the bearing surface can restore the brightness of the bearing surface.


(2) Lubrication work


Do a good job in the maintenance of bearings during daily use, and regularly perform lubrication and maintenance on the bearings. The editor of Longda also shared the oil lubrication methods of slewing bearings before you can learn. In daily use, in addition to lubrication, attention should be paid to keeping the bearing surface dry, which can also improve the brightness of the bearing surface.


The metal luster of the slewing bearing steel is actually very bright. The reason why we need to improve the brightness of the bearing surface is mostly caused by the corrosion and improper cleaning of the bearing during use. Rust and cleaning work are also very important to improve the surface brightness of the slewing ring. Doing the cleaning and maintenance work of the bearing during the use of the bearing can increase the brightness of the bearing. At the same time, the anti-rust treatment of the bearing surface before use can also increase the brightness of the slewing bearing surface.

High-precision slewing bearing for automatic welding equipment was successfully completed

Recently, our company has produced a set of non-standard customized special-shaped high-precision slewing bearings for a high-tech enterprise in Beijing. This set of bearings is used on high-end automatic welding equipment for processing nuclear equipment. This is the second time this company has been with us. The first cooperation was for large-scale precision slewing bearings. In view of our previous happy cooperation, the customer chose to cooperate with our company for the second time without hesitation. The customer’s cooperation again is for the quality of our products, technology, and pre-sales. , Sales and after-sales service are confirmed again.

This product has several important features:


  1. The outer diameter is large, reaching 2.2 meters, which is much higher than the size range of high-precision slewing bearings commonly made in the market.


  1. the precision requirements are extremely high, the end jump and the diameter jump are strict, the end jump is within 0.05mm, the diameter jump is less than 0.1mm, and the clearance is 0-0.005mm.


  1. The starting torque is very small, requiring one person to rotate easily.


  1. the surface should be hot-sprayed zinc, and it is required to reach the level of wind power bearing.

Our company strictly follows the requirements of the customer to confirm the drawings, formulates the processing and production plan, anticipates the problems that may occur in each process, and thinks up targeted solutions in advance to ensure that each process is within the controllable range, so as to ensure the quality and safety of the assembled product . After a series of controllable processing procedures and the timeliness of the materials in the processing, the technical requirements of the finished product have reached the requirements specified in the drawings confirmed by the customer. Moreover, the rotation is flexible, which can be easily rotated by one person.