Factors Affecting Bearing Capacity of Slewing Bearings and Methods of Improving Bearing Capacity

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Rotary support is a key component for rotating mechanical devices. It can support and rotate weight, so that the device can rotate smoothly. The loading capacity of the rotation support refers to the larger load or weight it can withstand. The loading capacity of the rotary support depends on multiple factors. For specific factors, please affect the factors of the carrier support capacity and the method of increasing the carrying capacity.

1. Factors affecting the loading capacity of the rotary branch

1. Structure design

The structural design of the rotary support directly affects its carrying capacity. Designers need to consider factors such as the materials, size, shape, and bearings of the support to ensure that they can withstand the required load.

2. Material strength

The rotary support is usually made of high -strength metal materials, such as steel. The strength of the material determines the resistance and bending ability of the rotation support, which affects its carrying capacity.

3. Bearing type

The internal internal internal of the rotation supports is usually included in the bearing system to reduce friction and support rotation. The type and quality of the bearings directly affect the carrying capacity of the rotation support. Common bearing types include rolling bearings and sliding bearings.

4. Working environment

The loading capacity of the rotation support will also be affected by the working environment. For example, if the rotary support is working in a high temperature or harsh chemical environment, the corrosion resistance and thermal resistance of the material will become a key factor.

Slewing ring
2. Methods to improve the loading capacity of the rotary branch

1. Optimize the design of support structure

In order to improve the loading capacity of the rotary support, you need to choose good quality support. The second is to optimize the structure design to improve its carrying capacity. For example, strengthening the contact between the steel ball and the arc running in the contact area of the supporting area, increasing the bearing area of the supporting support can effectively improve the support capacity of the support.

2. Use and maintain correctly

In addition, correct use and maintenance support is also the key to improving its carrying capacity. Regular inspections and maintenance can ensure the normal operation of the support, which can effectively use the life.

Factors affecting the loading capacity of the rotary branch are usually tested and evaluated during the manufacturer’s design and manufacturing process. When using the re -supporting support, it is necessary to ensure that the load applied should not exceed its bearing capacity to avoid damage or accidents. Specific carrying capacity parameters can usually be found in the technical specifications of the rotating support products or the technical materials of the manufacturer.

What does the overturning moment of the slewing bearing mean? What are the factors that affect the overturning moment?

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As an important load-bearing element of mechanical equipment, the performance of slewing bearing is directly related to the safety and service life of the equipment. The overturning moment of the slewing bearing is one of the important indicators to evaluate its bearing capacity. This article will focus on the topic of the overturning moment of the slewing bearing and discuss it from three aspects.
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1. What is the overturning moment of the slewing bearing?
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The overturning moment of the slewing bearing refers to the larger overturning moment that the slewing bearing bears when it is working, usually expressed in N·m. The overturning moment of the slewing bearing refers to the larger torque that the slewing bearing can bear at a certain angle, and it is also the larger moment that the mechanical equipment can bear when it is working. The overturning moment determines the carrying capacity and working efficiency of the mechanical equipment. .
Slewing ring
2. Factors affecting the overturning moment of the slewing bearing
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1. Support quality
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The quality of the slewing bearing is one of the key factors affecting its ability to withstand overturning moment. High-quality supports typically employ materials and precision manufacturing processes that provide greater structural strength and stability, allowing them to withstand greater overturning moments.
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2. Support structure
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Slewing bearings with different structures exhibit different performances when bearing overturning moments. The design and construction of the supporting structure determines its ability to resist overturning. For example, adopting a wider support base, increasing the number of support bearings, or using reinforced structural supports can improve its ability to withstand overturning moments.
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3. External load
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The external load on the support is an important factor affecting its overturning moment. When the external load increases, the moment on the support increases accordingly, resulting in an increase in the overturning moment. Therefore, when designing and using slewing rings, the required load-bearing capacity must be considered to ensure that it will not overturn when subjected to the expected load.
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4. Working environment
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The working environment where the support is located will also have an impact on its carrying capacity. For example, severe operating conditions, such as high temperature, low temperature, humid or corrosive environment, may reduce the material strength of the bearing or cause the performance of the lubricant to decrease, thereby reducing the bearing capacity and anti-overturning ability of the bearing.
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To sum up, you should have a general understanding of the meaning of the overturning moment of the slewing bearing. Support quality, structural design, external load and working environment are important factors that affect the overturning moment of the slewing bearing. By selecting high-quality supports, optimizing structural design, reasonably predicting external loads, and adapting to different working environments, the overturning moment bearing capacity of three-row ball, double-row ball, and single-row ball slewing rings can be improved to ensure their stable operation and safety performance.

Gear shaft and its importance and application

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1.Gear shaft and its importance

The gear shaft is an indispensable type of bearing involving the structure of the mechanical and equipment. It is a common component that transmits power, speed or displacement from one place to another place. It can ensure the continuous and stable operation of machinery and equipment, and is one of the most important parts of machinery and equipment.

2, gear shaft

The life span of the gear shaft is important. Therefore, the important factors of the important factors, internal and external, inside and outside, inside and outside the outside, outside, and outside, and liquid liquid, and separate internal and external, and internal and external separation factors, important and important factors Important and important seals, etc. ,correct. Correctly appropriate sealing of the performance and use of the gear shaft

3, gear shaft

The gear shaft is widely used as the type of machinery, especially the equipment, machinery, oil, oil, oil, oil, oil, oil and oil and oil and oil and oil and oil and oil and oil.

4, gear axis development

In recent years, with the continuous driving, the gear shaft has continued, and the gear shaft has become more and more. It, whether, whether it is whether it is in the direction of the gear shaft, the characteristics, the characteristics of the gear shaft, the characteristics, the characteristics , Cost -effective, to greatly improve and improve mechanical machinery and machinery

The importance and application of the gear axis above

slewing bearing 

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is a common mechanical parts that support and rotate large structures, such as bridges, buildings, and wind turbines. Rotary support is composed of parts of the internal and external ring, rolling body, maintenance frame and sealing circle. The choice of material is essential for its performance and life. In this article, we will explore the materials and characteristics of common rotation support in order to better understand this important mechanical parts.

The material of the backbone support

1. Carbon steel

Carbon steel is a common rotary support material. Its main feature is low price, high strength, easy processing and heat treatment. Carbon steel rotation branches are suitable for small and medium -sized structures, such as excavators, cranes, etc. However, carbon steel is easy to rust and requires regular anti -rust oil to extend the service life.

2. Alloy steel

Compared with carbon steel, alloy steel rotation branches have higher strength and better corrosion resistance. Its additional elements can improve its hardness, toughness and abrasion resistance, and make it more suitable for large structures with high load and high -speed rotation, such as cranes and building rotation towers. The price of alloy steel rotation support is relatively high, but its long life and less maintenance needs can reduce the overall cost in long -term use.
Rotary support 3. Stainless steel

The stainless steel rotation support has good corrosion resistance and high strength. It is suitable for the structure of working in a humid and corrosive environment, such as offshore wind turbines and port cranes. Compared with carbon steel and alloy steel, stainless steel rotation branches are higher, but their long -term durability and less maintenance costs make it an irreplaceable choice under some special occasions.

4, cast iron

The cast iron rotation support has abrasion resistance and corrosion resistance, and is suitable for the structure of heavy load and slow rotation, such as bridges and buildings. Its price is relatively low, but its strength and toughness are not as good as steel, so it is only applicable to some specific applications.

In short, the selection of materials for rotating support should be determined according to factors such as its application environment, load and rotation speed. When selecting materials, you need to consider the strength, wear resistance and other factors of the material. Different materials affect the performance and life of the bearings. Be careful when choosing

Analysis of the reasons for the phenomenon of the slewing bearing

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During the use of construction machinery equipment, various problems can not be avoided. Sometimes the turntable bearings suddenly break, which will not only affect the production progress, but also cause huge losses, and may also danger. What is the reason why Hengguan Xiaobian will analyze the reasons why the lower turntable bearing broken phenomenon will be analyzed today.

Reasons for the break of the rotor bearing
1. Material problem

The phenomenon of rotor bearing breaks can be said to be a major quality problem of this part. The rotor bearing breaks refer to the inner and outer ring of the inner and outer circles of such bearing, mainly because the tensile strength, yield strength, and impact toughness of the material are not up to the standard. Mechanical properties of making such bearing materials. The main material of the rotor bearing is carbon structure steel. 50mn and 42CRMO are commonly used in this industry. 50mn mechanical performance: (1) tensile strength σb (MPA): ≥645 (66); (2) Lading strength σs (MPA): ≥390 (40); (3) elongation rate Δ5 (%): ≥13: ≥13 ; (4) Sectional contraction 断 (%): ≥40; (5) impacting AKV (J): ≥31; (6) impact tough value αKV (j/cm2): ≥39 (4). When the turntable bearing work at a normal use temperature (-30 ° C to 70 ° C), it can basically be sure of the factors of the material problem.

2. Processing heat treatment

The production and processing process needs to be heat treatment of the rolling roads. The heat treatment fails, resulting in low surface hardness. The hardness layer penetrates into the wall of the rotary bearing structure or reaches the rotary supporting wall, which changes the mechanical performance of the internal and external circles. The value becomes smaller and the material becomes crispy.
Rotor bearing
3. Design structural problem

After the design structure of the turntable bearing is caused by heat treatment, the quenching layer is equivalent to the design thickness of the inner and outer circle. At this time, the material anti -tensile strength and the impact toughness value is small, resulting in a break, but this possibility accounted for a low proportion of the broken accident.

There are many reasons for the phenomenon of rotor bearing. When using an unspoken ring forged, the quality of the bearing material is unqualified. Bearing manufacturers, so that the material and design of the bearing can be guaranteed.

What are the effects of the turntable bearing in CNC?

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Among the CNC vertical equipment, the turning workbench is an important component. Its high -speed operation and the requirements for carrying heavy workpieces to make it have high -precision operation and anti -overturning torque. This article introduces the role of a single -row cross -rolling roller rotor bearing in CNC.

The role of the rotor bearing in CNC

1. support workbench

The large -scale turntable bearing of the support workbench plays a key role in this important mission. Previously, most workbench used a combination of thrust bearing and radial bearing. This structure was complicated and used more materials. Especially when large box parts were resettled, the space of the entire machine tool was larger. The device and pre -adjustment of large -scale turntable bearing are also difficult, and it is more difficult to guarantee for China. The overall accuracy of the workbench is difficult to improve.
Bearing

2. Beat accuracy

Bearing beating is divided into synchronous jump and asynchronous beating. Synchronous beating can be greatly reduced by grinding work table, but the impact of asynchronous beating cannot be eliminated. It is mainly determined by the outer diameter tolerance and circular of the roller. Therefore, the better the bearing asynchronous beating, the smaller the radial and axial beating of the workbench, the higher the working accuracy. When selecting bearing brands and accuracy levels, we should not only pay attention to the bearing device beating, but in depth the accuracy standards that affect the asynchronous bearing bearing.

Third, bearing cooperation

When the bearing type is selected, it is recommended that the inner ring, the shaft, the outer ring, and the gear of the tooth are tightly matched. Because the outer ring is a rotating part, the tightness should be slightly larger than the inner ring, so that the inner ring is moved down and moved down, and adjusts to a certain pre -tightening amount. However, if the inner ring is considered to be a stop component and the inner ring is planned with the axis as a loose coordination, when the inner ring, lock in the inner ring or bearings are loaded, the inner ring may be oblique, that is, the bias occurs. This deflection will cause stress concentration in the contact area of the roller and the roller, forming serious scratches.

Therefore, now more design schemes have begun to adopt a more compact interspersed roller bearings. The role of the turntable bearing in CNC ride improves the limit speed. At the same time, the accuracy and stability are better. Not only can it save material costs, but it can also simplify the design plan. The above is the introduction of the turntable bearing manufacturer.

Detailed explanation of how to prevent slewing bearing quenching cracks?

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slewing bearing t is widely used in large -scale rotary devices in engineering, mining, wind power, oil, chemical industry and other industries. When the rotary support is running, its rail structure is the focus of guaranteeing normal operation. The orbit of the reincarnation support is processed by quenching. Today I will tell you how to prevent quenching cracks.

How to prevent quenching crack

1. Choose a reasonable quenching method

According to the structure and characteristics and technical requirements of the rotor bearing, the correct and reasonable selection of structural design status and the quality of workers can be greatly reduced or no quenching accidents can be greatly reduced.

2. Arrange the process line reasonably

Once the material, structure and technical conditions of the rotation support are determined, the craftsman must conduct a process analysis to determine the reasonable process line. Correctly arrange the order of preparing processing, thermal treatment and heat processing. This is the main effective way to prevent the tendency of rail cracking after thermal treatment.
Rotary support 3. Properly determine heating parameters

In the heating production of the rotary support rail, improper heating is the main factor that causes the quenching and reincarnation support. Therefore, heating parameters such as heating medium, heating speed, heating temperature, and thermal insulation time should be correctly selected and designed.

4. Other measures to prevent quenching cracks

After quenching, it is recovered after quenching. The thin -walled treatment of complex parts of the shape can also effectively prevent the production of cracks.

5. Selection of quenching medium

The selection of quenching medium should be comprehensively considering the rotary support for the quenching method: including quenching groove liquid, stirring speed, flowing direction, and solution concentration. As well as the characteristics of the rotation support, the chemical ingredients of the steel, the section size of the workpiece, the geometric shape, the surface roughness and the surface state, the arrangement status and density of the arrangement during the quenching of the road.

I introduced so much about how to prevent quenching cracks, I hope to help you! Whether the rotating support can work normally, it is the key to prevent quenching cracks!

Shield machine slewing bearing

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The diameter of shield machine slewing bearing varies from 2.5 meters to 6 meters, and some diameter is larger. This kind of bearing works in very harsh conditions, with large bearing load, strong corrosion resistance and short life.

Shield tunneling machine is the main construction machinery in shield tunneling method, which must have high reliability and can work stably and reliably. The main bearing of large shield machine mainly adopts three-row roller slewing bearing, which needs to bear large axial force and overturning moment in the working process, as well as certain radial force. The loading situation is complicated, and it is easy to produce large deformation, which affects the construction safety of shield machinery.

Features and applications of turntable bearing

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The turntable bearing is an important part of many automobiles and machine tool equipment. There are multiple models of the turntable bearings. There is no need to support the body in the work. As long as the gap between the support to the face and the work surface is maintained, the turntable can be balanced. It can be selected as needed, and the scope of use is also very wide. Generally applicable to the precision transmission parts in the machine, in which aspects of the specific turntable bearings are used. Essence

1. The characteristics of the rotor bearing

The rotor bearing is generally suitable for tolerance of radial load (rotating torque) greater than 10N.M, and axial load does not exceed 20n.m. The roller and steel of the roller of the turntable bearing are carburized on the surface, and the surface hardness is high, which is suitable for occasions with impact loads.

The rolling roads are generally produced in precision processing methods, and their diameter can be selected as needed; inner and outer circles are demolished to facilitate maintenance and replacement. There are multiple models in the rotor bearing, which can be selected as needed. The turntable bearing is an overall component composed of high -precision, high -performance steel ball and graphite, and is mainly used in precision rotation instruments.
Rotor bearing
Second, the application of the rotor bearing

The turntable bearing is a high -precision, large carrying capacity, high stability, and high stability. It is widely used in the field of aerospace industry, petrochemical production and mechanical manufacturing industry. The roller of the rotor bearing is precisely processed, so there is no special requirements for the material. According to the application field, you can choose different brands of materials. The scope of the rotor bearing is wide, which is generally suitable for the precision transmission parts in the machine.

The characteristic of the rotor bearing is determined by the structure of the bearings. There is only one set of support in the entire structure. It does not require supporting body in the work. balance.

How to disassemble the large -scale rotor bearing? Four methods teach you

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The turntable bearing is a large bearing with a special structure. It can withstand a comprehensive load such as a large axial load, radial load, and overturning moment. It also has a variety of functions such as support, rotation, transmission, and fixation. Applications in the seed industry or equipment are widely used. Many friends are not very familiar with how to disassemble large -scale turntable bearing. Next, Hengguan Xiaobian will introduce the four commonly used bearing disassembly methods for everyone.

1. Tapping and disassembling method

In many disassembly scenarios, the knocking method will be used. In short, using a copper stick or other soft metal materials less than the inner diameter of the bearing to the shaft end (if the bearings are at the end of the axis), use the handhand to knock on the bearing in the bearing. The circle slowly falls off. This method is simple and easy to do. The disadvantage is that it is easy to cause damage to the bearings. Therefore, you should be careful when operating. You need to pay attention to the rolling of the bearing and keeping the rack.

Second, pull out the disassembly method

This method needs to use a specialized tool to generate a uniform pull force by rotating the handle to pull out the bearings. This method is better to protect the bearing, and you need to pay attention to the following points when operating:

1. To hook the hook of the stretch to hold the inner ring of the bearings, if the accidental hook may cause excessive or damage to the bearing loosening on the outer ring.

2. To make the screw rod on the center hole of the bearing, pay close attention to the force of the bearings during the process of pulling out to avoid damaging the hooks and bearings.

3. Pay attention to prevent the hook from slipping, the corner of the bend of both feet should be less than 90 °

Third, pressure disassembly method

This method needs to use the pressure machine to press the bearing. The working process is smooth and reliable, and generally does not damage the machine and bearings. Pay attention to the effort point of the pressure machine should be on the center of the axis, and cannot be compressed. Common pressure machines are manual, mechanical or hydraulic type.

Fourth, heat treatment and disassembly method

The bearing for disassembling tightness can be performed first, and then pulled out with the help of the tension. Generally, the oil that is heated to about 100 ° C is poured on the bearing to be demolished. After the bearing ring is heated and expanded, the bearings are evenly pulled out with the help of a dedicated tape. This method should do a good job of self -protection and oil body recycling to prevent scalding; wrap the shaft body before heating, so that the bearing can not disassemble the bearings caused by heating and expansion.

The above is the specific introduction of how to disassemble the large -scale turntable bearing, I hope to help you. Luoyang Hengguan Bearing Technology Co., Ltd. is a comprehensive physical enterprise integrating design, research and development, production, sales, and service. The product quality is guaranteed. If you still have other questions about bearing, you can give it. We will leave a message or call us, we will serve you wholeheartedly!