Features and advantages of combined needle roller bearings

/in /by

Combined needle roller bearings are a special type of bearing that can add a needle roller assembly between its inner ring and outer ring to achieve effects such as balancing accuracy and reducing vibration and noise. The design and manufacture of such bearings requires precise calculations and highly specialized skills.

Different from general types of needle roller bearings, combined needle roller bearings make the combination of needle rollers and raceways adjustable. This design can select needle rollers of different lengths and shapes to match the raceways according to actual needs. needs. This design allows the needle roller bearing to be more flexible during installation, and the bearing can be adjusted according to the requirements of the equipment and industry to improve its performance and stability.

In addition, combined needle roller bearings can also withstand radial and axial forces, have high load-bearing capacity and low friction coefficient, and can work under high load and high speed conditions. This type of bearing is suitable for a variety of mechanical equipment and industries, including machine tools, construction machinery, agricultural machinery, and industrial robots.

Features and advantages of combined needle roller bearings:

  1. Strong load-bearing capacity: The combined needle roller bearing is composed of an inner ring, an outer ring and a needle roller. Its unique structure makes its load-bearing capacity stronger than that of ordinary bearings, and can adapt to high load and high-speed rotation situations.
  2. Wear resistance: The combined needle roller bearings are made of high-quality materials and have good wear resistance, and can maintain stable performance even during long-term operation.
  3. High precision: The design and manufacturing process of combined needle roller bearings are strict, making them highly precise and ensuring high-quality rotation accuracy and stability.
  4. Easy to install: The combined needle roller bearing has a compact structure and is easy to install and disassemble. Replacement can be completed quickly, reducing downtime and maintenance costs.
  5. Wide range of applications: Combined needle roller bearings can be used in a variety of applications, including machinery, electrical, chemical and other industries, and can meet different needs.

Selecting a suitable combined needle roller bearing requires consideration of several factors, including bearing size, load, speed and rotational speed. First of all, it is necessary to determine the application scenarios and working conditions for using combined needle roller bearings, and select the bearing size based on this.Secondly, according to the application environment and load conditions, select the appropriate bearing type, such as single row radial combined needle roller bearings, double row radial combined needle roller bearings or angular contact combined needle roller bearings. Next, you need to pay attention to the bearing speed and speed limits to ensure that the selected bearing can maintain sufficient stability and life at the highest operating speed.Finally, when selecting bearings, factors such as bearing material, lubrication, and sealing also need to be considered to ensure that the bearings can maintain stable performance and reliability in a specific working environment.

The company participated in the 7th Pakistan Industrial Exhibition

/in /by

The 7th Pakistan Industrial Exhibition will open in Lahore, Pakistan’s second largest city, on November 25, 2023. The scale of this exhibition is far greater than that of the previous one. The scale of this year’s exhibition has been expanded to two exhibition halls. The exhibition hall displays products from local Pakistani companies, while Hall 2 focuses on exhibits from Chinese companies.At this exhibition, hundreds of companies from China became the focus of the Lahore Convention and Exhibition Center.

This time, Chinese enterprises organized a group to go overseas, attracting more than 130 manufacturing companies from Shandong, Henan, Hebei, Hunan and other places to participate in the exhibition, with an exhibition area of more than 8,000 square meters.

There are nine theme exhibition areas on site. The exhibition exhibits cover agricultural machinery, transportation, automobile and motorcycle accessories, CNC machine tools, electronic and electrical, industrial equipment and accessories, hardware tools and other industries.

This exhibition also attracted more than 30 local Pakistani companies to participate in the exhibition, which also built a bridge of communication and interaction for exhibitors from the two countries. Through the “going out” and “bringing in” of products from the two countries, it further promoted the development of China-Pakistan trade. Exchange and cooperation.

On the first day of its opening, the exhibition attracted more than 10,000 professional buyers from Pakistan to visit and negotiate. It is expected that the number of visitors in the three days will exceed 30,000, and the overall intended transaction volume is expected to exceed US$100 million.

This year marks the 10th anniversary of the launch of the China-Pakistan Economic Corridor. The Pakistan Industrial Exhibition has been held for seven consecutive years, which is the fruitful result of the China-Pakistan Economic Corridor.

The exhibition has brought advanced Chinese manufacturing to Pakistan, which will further promote local industrial development and improve Pakistan’s industrialization level.

Our company participated in this exhibition and displayed various types of bearings at the booth, attracting many interested buyers. The following is a live picture of the exhibition.

Common materials for bearing oil seals

/in /by

Common materials for bearing oil seals include:

  1. Nitrile rubber (NBR): This is a commonly used oil seal material with excellent oil resistance and wear resistance. It is suitable for most environments, but is not resistant to high temperatures.
  1. Fluorine rubber (FKM): This is another commonly used oil seal material. Its resistance to high temperatures and chemical media is superior, but the cost is slightly higher and needs to be selected according to specific needs.
  2. Acrylic rubber (ACM): Acrylic rubber has good resistance to high temperatures and chemical media, is light in weight, and has low cost, but its oil resistance is slightly poor.
  1. Silicone rubber (VMQ): Silicone rubber has excellent high temperature resistance, ozone resistance, UV resistance and oil resistance, but its hardness is low and its wear resistance is poor.
  2. Polytetrafluoroethylene (PTFE): Polytetrafluoroethylene is a material with excellent corrosion resistance. It is not widely used in oil seals, but in some special occasions, such as those containing corrosive media such as strong acid and strong alkali. Under certain conditions, oil seals made of polytetrafluoroethylene will be used.

In addition, bearing seals and dust covers are made of a variety of materials. The dust cover is generally made of cold-rolled electroplated tin steel plate, and the sealing ring is often made of nitrile rubber or fluorine rubber. Specific applications require the selection of appropriate materials based on factors such as the working environment and operating temperature.

Methods to judge the material quality of bearing seal rings:

  1. Observe the surface: First observe the surface of the sealing ring. It should be smooth and delicate, without obvious impurities and defects. A defective seal may affect its sealing performance and service life.
  2. Smell: If the sealing ring emits an odor, there may be a quality problem. A good seal should have no pungent smell.
  3. Measurement dimensions: Measure according to the standard dimensions provided by the manufacturer. If the seal size is not within specification, it may result in bearing leakage or damage.
  4. Use tools: Use appropriate tools to shear, compress, stretch, etc. the sealing ring to observe its elasticity and stretchability. A good sealing ring should have good elasticity and stretchability and can withstand a certain amount of external force and pressure.
  5. Check the performance of the sealing ring: Put the sealing ring into a high temperature and high pressure environment for testing. If the sealing ring can maintain stable performance and sealing effect, it means that its quality is excellent.

The above steps will help you accurately judge the quality of the bearing seal ring material. Choosing good quality sealing rings can ensure the normal operation of the bearing and extend its service life.

The function and classification of bearing retaining rings

/in /by

Bearing retaining ring is a fastener used in bearings to prevent axial movement. Bearing retaining rings are usually made of high-quality steel with high strength, wear resistance and corrosion resistance. Its functions include position fixation and positioning, preventing axial slippage and protecting key components. It is widely used when there is no axial load or very small axial load.

The materials for bearing retaining rings mainly include metal materials such as iron, copper, and stainless steel, as well as non-metallic materials such as nylon and polyformaldehyde. According to different use environments and performance requirements, the manufacturing materials of bearing retaining rings also vary.

Iron retaining rings are one of the most common choices due to their affordability, but they may rust in corrosive environments. Copper retaining rings have good corrosion resistance, but the price is relatively high. Stainless steel retaining rings have good corrosion resistance and are relatively affordable.

Compared with metal retaining rings, non-metallic retaining rings are more durable, lighter and easier to process, and are widely used in situations that require higher precision. For example, nylon retaining rings are often used where low loads are required, while polyacetal retaining rings are often used where high wear resistance is required.

Therefore, when selecting the material for the bearing retaining ring, the advantages and disadvantages of various materials need to be comprehensively considered according to the specific use requirements.

Bearing retaining rings can be divided into many types according to different uses. First of all, according to its use occasions and installation methods, it can be divided into flat retaining rings, inclined retaining rings and medium retaining rings. Secondly, according to the main function and form of the retaining ring, it can be divided into stop ring, round nut, double round nut or shaft end pressure plate, etc. In addition, according to the material and thickness of the retaining ring, it can also be divided into light, medium and heavy duty.

Bearing retaining rings are mainly used to fix the positions of bearings, gears, gaskets and other components to ensure the reliability and stability of the equipment and improve the safety and reliability of the equipment. In addition, bearing retaining rings can also be used in non-standard automation industries to ensure the assembly and stable operation of equipment.

The bearing retaining ring is a component used to prevent the outer ring or inner ring of the bearing from falling off the bearing seat. It ensures the normal operation of the bearing by limiting the axial movement and radial movement of the bearing. Specifically, when the inner ring or outer ring of the bearing moves on the shaft, the bearing retaining ring can play a blocking and positioning role so that the bearing will not shake in the axial and radial directions during operation.

Bearing retaining rings are often available in a variety of shapes and sizes to suit different bearing models and applications. The design of the bearing retaining ring needs to take into account its cooperation and installation with the bearing to ensure the stability and accuracy of the bearing.

When a bearing is worn or damaged during operation, the bearing retaining ring may lose its blocking and positioning functions. At this time, the bearing will shake axially and radially, causing wear and damage to the bearing seat and shaft. Therefore, while ensuring the normal operation of the bearing, the bearing retaining ring also needs regular inspection and maintenance to ensure that its position and condition in the bearing are good.

Why is bearing PEEK material so expensive?

/in /by

Bearing PEEK material is a special engineering plastic, well known as the “King of Plastics”. It is based on high-performance engineering plastic PEEK and has excellent heat resistance, chemical stability, dimensional stability and mechanical properties, and can adapt to various harsh working environments. It is widely used in bearings with high temperature, low viscosity lubricants and corrosive environments, such as tilting pad thrust bearings and journal bearings.

As for why PEEK materials are more expensive, on the one hand, it is because PEEK materials are high-performance materials that require special production processes and raw materials, and the production costs are high. At the same time, due to the wide range of characteristics and application fields of PEEK materials, the demand is large and the market supply is tight, so the price is naturally relatively high.On the other hand, PEEK materials have excellent properties such as high temperature resistance, corrosion resistance, wear resistance and self-lubricating properties, which can effectively reduce friction and improve efficiency, reduce the risk of failure and extend the service life of components, thus bringing better results to users. Great value. In the current market, the price of PEEK material is about 500 yuan/kg. Although there are some shortcomings, such as difficulty in processing and poor melt fluidity, its comprehensive performance and economic benefits make it popular in all walks of life. widely used.

In the aerospace field, PEEK materials are widely used in the manufacture of parts such as rocket nozzles and fuel injectors. These parts play a vital role in rocket propulsion and fuel control, and PEEK material has the advantages of high temperature resistance and corrosion resistance, so it can maintain excellent performance in this high temperature and high pressure environment.

In the medical field, PEEK materials are used to manufacture medical devices such as fracture fixators, heart stents, and prostheses. Due to its high strength, low wear and corrosion resistance, PEEK material can greatly improve the service life and safety of these medical devices.

In the field of automobile manufacturing, PEEK materials are widely used to manufacture engine parts, transmission shafts, lamp covers and other parts. These parts are critical to the performance and safety of automobiles, and PEEK material’s high strength, wear resistance and low weight properties can meet the needs of the automotive industry.

In the field of petrochemical industry, PEEK materials are widely used in manufacturing components of petrochemical equipment, such as mixers, heat exchangers, pipes, etc. These parts need to withstand environmental conditions such as high temperature, high pressure and corrosion, and the corrosion resistance, high temperature resistance and high strength of PEEK material make it an ideal choice.

To sum up, PEEK materials are widely used in aerospace, medical, automobile manufacturing, petrochemical and other fields. These cases prove the high performance and superiority of PEEK materials, and also reflect its broad application prospects.

Types and characteristics of bearing grease

/in /by

Bearings are commonly used in mechanical equipment. So, what kind of grease should we use for different types of bearings to make them last longer? This article will analyze several common bearing grease types and characteristics.

  1. Calcium-based grease

Calcium-based grease is a lubricating product made with calcium soap as the main thickener and supplemented by other additives. It has good lubricity, good water resistance, average adhesion, high dropping point, and good high and low temperature resistance. Since calcium-based grease is evolved from soap-based grease, it has all the characteristics of soap-based grease. When used, it is generally relatively viscous and will not easily run off when applied to bearings and other components. It will produce a lubricating film between the metal and the substance.It is especially suitable for the use of some mechanical equipment in environments with high humidity, high temperature or large mechanical vibration. It is widely used in industrial equipment, especially in the lubrication of high-temperature, low-humidity or dust particle environments, as well as high-speed rolling bearings with particularly heavy workloads that require particularly high grease film pressure.For example, this kind of grease is widely used in mechanical equipment such as cotton pickers, cotton balers, and threshing machines in the agricultural machinery industry.

  1. Lithium-based grease

Lithium-based grease is a versatile lubricating product made with natural fatty acid lithium soap as a thickener and other auxiliary additives. Lithium-based grease is synthesized from a variety of materials such as mineral oil, soap-based thickeners, additives and fillers. It has a soap fiber structure. As the temperature increases and decreases, the molecular structure changes, thus affecting the viscosity and consistency of the grease. Due to its good comprehensive performance, it can meet various bearing lubrication requirements under harsh conditions. Especially when used under conditions such as high temperature, high speed, heavy load and chemical corrosion, it shows its superiority. It can be applied to the lubrication of various types of bearings. This kind of grease is widely used in agricultural machinery such as tractors, automobiles, diesel engines and other mechanical equipment.

  1. Lithium complex grease

Lithium complex grease combines the advantages of various lithium greases and has the characteristics of high dropping point, good adhesion, extreme pressure and anti-wear, water resistance, and excellent rust prevention. It is blended with lithium complex soap thickener, high viscosity refined oil and softener. Suitable for lubrication of various bearings under conditions such as high temperature, high speed, high speed and humidity.Due to its excellent performance, it has been widely used in some mechanical industry fields. The lubrication of chains and gears used in steel plants is one example.

  1. Extreme pressure calcium-based grease

The characteristic of this kind of bearing grease is that it can wash away worn metal chips to a certain extent, reduce the direct wear effect of solid impurities on the bearing steel surface, and improve the wettability of the bearing steel surface, making the steel surface less likely to be scratched. thorns, thereby ensuring a longer-lasting and better self-lubricating effect between the steel surface and the journal, and helping to reduce mechanical noise and ensure low-noise working conditions of mechanical equipment.It is suitable for coating the surface of castings before leaving the factory to eliminate impurities and tiny convex parts remaining on the surface of the parts during casting and prevent corrosion, making the castings easy to assemble and reduce friction. In addition, it is also suitable for the lubrication and flushing of double-row radial spherical roller bearings in textile machinery coiler bearings and other parts in the machinery industry that require waterproofing, rust prevention and a certain degree of adhesion.

  1. High temperature bearing grease

High-temperature bearing grease should be used for bearing parts in mechanical equipment that are often exposed to high temperatures.Generally speaking, high-temperature grease is generally made of fully synthetic base oil and sulfonate thickener at working temperatures below 260 degrees. It is used on bearings working at low and high temperatures in harsh environments (generally more than 150 degrees). It is a high-temperature bearing) and is also suitable for the lubrication and protection of motor parts in the aerospace field. Currently, there are various types of high-temperature greases on the market. When choosing, you should choose the appropriate production raw materials according to the industrial and mining conditions and environmental requirements. The best product is suitable for your own use. For bearings working under high-speed operating conditions, the viscosity of the selected grease should be small and the fluidity should be good to ensure that the resistance is small when the bearing is running. The friction on the bearing is small, which can significantly reduce mechanical noise and save energy; otherwise, the resistance increases. Increased friction will accelerate bearing wear and shorten service life.

What is Aligning ball bearings？

/in /by

Aligning ball bearings are self-aligning bearings that can bear both radial and axial loads. This special bearing is mainly used in papermaking machinery, speed reduction devices, railway vehicle axles and other equipment.

The structural design of the self-aligning ball bearing gives it excellent self-aligning performance. Its outer ring raceway is spherical, and the inner and outer rings can be tilted relative to each other by no more than 3 degrees. This enables the bearing to automatically adjust the axis deviation during installation and operation, reduce vibration and wear caused by shaft bending or tilt, and improve the operational stability and reliability of the equipment.

In addition, self-aligning ball bearings also have the characteristics of low friction, low noise and long life, and are widely used in various machinery, such as precision instruments, low-noise motors, automobiles, motorcycles and general machinery. Its structural form includes models with dust cover and sealing ring, which not only ensures the lubrication and dust-proof effect of the bearing, but also increases its service life.

Regarding the installation of self-aligning ball bearings, first of all, when installing the self-aligning ball bearings, they must be placed in a horizontal position and fixed with special tools such as screws or hammers. Next, ensure that the inner ring of the bearing fits closely with the shaft to avoid gaps.Afterwards, you can turn the bearing by hand to check whether it rotates smoothly. If there is any jamming, make appropriate adjustments. During the installation process, you need to pay attention to the installation direction of the bearing. Generally speaking, self-aligning ball bearings can be installed in both directions, but you need to choose the correct installation direction according to the actual situation to ensure that it achieves the best performance.After completing the installation, it is also necessary to check the contact between the bearing and the shaft to ensure that the contact surface is free of impurities or damage. Finally, apply appropriate lubricant to extend the life of the bearings.

When purchasing self-aligning ball bearings, you first need to clarify the application scenarios and requirements. Specifically, factors such as the fit of the shaft and the bearing, the installation position, and the size of the load need to be considered, which will directly affect the selection of the self-aligning ball bearing.

For larger-sized self-aligning ball bearings, special attention needs to be paid to their load-bearing capacity. If the diameter of the shaft is larger or the bearing capacity is heavier, it is particularly important to select an appropriately sized aligning ball bearing. In this case, it is recommended to use multi-row self-aligning ball bearings to improve the bearing capacity and stability.

Secondly, the rotation speed of the shaft is also an important factor in selecting self-aligning ball bearings. If the shaft needs to rotate at high speed, it is recommended to use high-speed bearings. In addition, choosing self-aligning ball bearings with dust-proof and anti-fouling devices such as oil seals or waterproof rings can also effectively extend the service life of the bearings.

Finally, when purchasing self-aligning ball bearings, you should also pay attention to their quality and brand. Choosing self-aligning ball bearings produced by regular manufacturers with good reputation and quality assurance can effectively reduce the risk of bearing damage.

In general, choosing a suitable self-aligning ball bearing requires comprehensive consideration of multiple factors, including bearing size, load-bearing capacity, rotation speed, dust and anti-fouling capabilities, and brand. Only by correctly selecting the self-aligning ball bearing can you ensure that it can perform optimally and extend its service life.

What are insulated bearings?

/in /by

Insulated bearings are bearings with electrical insulation properties that can effectively prevent the passage of current. They are mainly used in motors, generators and other equipment. This kind of bearing is composed of bearing steel inner ring, outer ring, cage and steel ball (or roller). The rolling elements can be made of ceramics.

In equipment such as motors and generators, rolling bearings may be affected by current erosion, causing bearing damage and motor failure. The use of insulated bearings can effectively prevent the electrical corrosion of the bearings and the influence of grease and rolling elements by current, increase the service life of the bearings, and ensure the normal operation of the equipment.

The electrical insulation properties of insulated bearings can be guaranteed by measuring insulation resistance, shaft voltage and shaft current to ensure that the coating and coating thickness on the bearing surface can withstand the set voltage level.For example, the outer surface of its outer ring or inner ring is coated with a layer of aluminum oxide, which can withstand voltages up to 1000VDC, and its rolling elements are made of ceramics. The insulation condition needs to be measured by measuring insulation resistance, shaft voltage and shaft current. Assure.

Therefore, insulated bearings are widely used in motors, generators and other equipment, mainly to prevent shaft current from causing burn damage to bearings and improve the operating reliability and service life of bearings.

The choice of materials for insulated bearings mainly depends on their function and field of application. In general, these bearings must have high wear resistance, high insulation properties and good mechanical properties.

Common insulating bearing materials include ceramic, graphite and polytetrafluoroethylene (PTFE). Ceramics are known for their high hardness, high wear resistance and good insulating properties. Graphite is widely used in the bearing field due to its low friction coefficient and excellent lubrication properties. PTFE is widely used because of its superior corrosion resistance and insulation properties.

According to different usage environments and working conditions, designers and engineers can also choose other special materials to manufacture insulated bearings. For example, in high temperature, high pressure or extreme environments, you can choose metals with high melting points and good corrosion resistance, such as stainless steel or titanium.

Insulated bearings usually consist of three main parts: the bearing itself, the bushing, and the insulator inside the bushing. Insulators, usually made of materials such as glass or ceramic, are used to isolate the electrical contact between the bearing and bushing. This design ensures the electrical insulation of the sleeve and bearing, allowing the entire device to safely conduct electrical energy during operation.

In practical applications, insulated bearings are often used in power equipment such as high-voltage motors, motors and generators to reduce the risk of corona and leakage. This kind of bearing can also effectively reduce the heat generated in high-speed running equipment and improve its service life and reliability. In addition, the design of the insulated bearings also makes it easy to install and maintain, thus reducing the maintenance cost of the equipment.

Common types of maintenance-free bearings

/in /by

Maintenance-free bearings have important applications in mechanical equipment. Their special performance eliminates the need for frequent maintenance, reduces maintenance costs, and avoids equipment downtime due to improper maintenance. This article will introduce several common maintenance-free bearing types.

  1. Self-lubricating bearings

Self-lubricating bearings are special maintenance-free bearings that do not require frequent addition of lubricants or grease. This kind of bearing is usually made of a special composite material that is self-lubricating. When the bearing rotates, the material will produce lubrication from the inside, reducing friction and wear. Self-lubricating bearings are generally used where high precision, long life and maintenance-free are required.

  1. Oil bearings

The characteristic of oil-impregnated bearings is that the inside of the bearing is filled with solid or liquid lubricant. This kind of bearing is usually made of metal or plastic and is filled with lubricant. When the bearing rotates, the lubricant will form an oil film between the inner and outer rings, reducing friction and wear. Oil-impregnated bearings are usually suitable for applications requiring lower speeds and smaller loads.

  1. Ceramic bearings

Ceramic bearings are maintenance-free bearings made of ceramic materials. Ceramics have high hardness and high wear resistance, and are suitable for high speed and high load applications. Ceramic bearings usually consist of ceramic balls and rings. The inner and outer rings are usually made of high-hardness ceramic materials, and the balls are made of high-purity aluminum oxide or silicon nitride. Ceramic bearings have the characteristics of high precision, long life and maintenance-free, and are suitable for mechanical equipment requiring high speed and high load.

  1. Plastic bearings

A plastic bearing is a maintenance-free bearing made of plastic material. Plastic bearings usually consist of an inner ring and an outer ring. The outer ring is usually made of metal or plastic, and the inner ring is made of plastic. Plastic bearings are lightweight, cheap and easy to process, and are suitable for applications requiring smaller loads and lower speeds.

  1. Stainless steel cage bearings

Stainless steel cage bearing is a maintenance-free bearing composed of stainless steel cage and steel balls. This kind of bearing features a cage and steel balls made of stainless steel, which are high-precision, long-life and maintenance-free. Stainless steel cage bearings are suitable for mechanical equipment requiring high speed and high load, such as automobiles, machine tools and pumps.

  1. Rubber bearings

Rubber bearings are maintenance-free bearings made of rubber material. Rubber is highly elastic and adaptable, making it suitable for a variety of environments and working conditions. Rubber bearings usually consist of an inner ring and an outer ring. The outer ring is usually made of metal or plastic, and the inner ring is made of rubber. Rubber bearings are lightweight, elastic and adaptable, and are suitable for applications requiring larger loads and lower speeds.

The above are several common maintenance-free bearing types, each type has its unique characteristics and applicable occasions. In practical applications, appropriate maintenance-free bearings should be selected according to the working conditions and requirements of the equipment to achieve optimal performance and life. At the same time, the maintenance and management of maintenance-free bearings are also crucial. Regular inspection and maintenance can ensure the normal operation of the bearings and extend their service life.

The Importance of Bearing Clearance

/in /by

Bearings are an important part of mechanical equipment. They carry out the key tasks of rotation, support and shock absorption. In this process, bearing clearance – the space between the inner and outer rings of the bearing – plays a decisive role. While the concept may seem simple, the presence of clearance can have a profound impact on bearing performance, life and stability.

  1. Basic concept of bearing clearance

Bearing clearance, also known as preload clearance, refers to the gap between the inner and outer rings of the bearing under no load conditions. This clearance is critical to maintaining the bearing’s rotational accuracy and reducing friction. It provides the bearing with moderate elastic deformation space, helping to maintain shaft concentricity while allowing certain vibration and temperature changes.

  1. The importance of bearing clearance

1.Mechanical properties: Bearing clearance is critical to the rotational accuracy and stability of the bearing. Excessive clearance may cause friction and heat, thereby reducing bearing life. Proper clearance allows the bearings to operate smoothly, reduces vibration and noise, and improves the overall performance of the machine.

2.Durability: Bearing clearance directly affects the fatigue life of the bearing. Excessive clearance will increase friction and temperature rise, which will accelerate bearing wear and shorten the service life of the bearing. Appropriate clearance can extend the service life of the bearing and improve the overall durability of the equipment.

3.Vibration control: Proper clearance helps reduce bearing vibration and improves equipment stability. This is especially important for equipment that requires high precision and stability, such as precision machine tools, medical equipment, etc.

4.Temperature control: Bearing clearance is closely related to temperature. Excessive clearance will cause friction to generate heat, which will affect the overall temperature distribution of the equipment. The appropriate clearance helps control the temperature and ensure the normal operation of the equipment.

5.Maintenance costs: The stable operation of bearings can reduce the frequency of repair and replacement of bearings, thereby reducing the cost of equipment maintenance. Excessive clearance may cause premature bearing wear, increase the need for repairs and replacements, and thus increase maintenance costs.

  1. How to measure bearing clearance

In order to ensure the normal operation of the bearing, we need to regularly measure the clearance of the bearing. Typically, we use a radial clearance adjustment device (RCTA) for measurement. This method adjusts the clearance by changing the preload to ensure the best performance of the bearing.

  1. How to adjust bearing clearance

The method of adjusting bearing clearance varies depending on the bearing type and manufacturer. Usually, we can make adjustments manually or automatically. Manual adjustments usually require the aid of tools such as wrenches and screwdrivers. Automatic adjustment usually relies on some specific devices and methods, such as automatic spherical roller bearings.

Bearing clearance plays a vital role in the operation of bearings. It not only affects the performance and life of the bearing, but is also directly related to the overall stability and durability of the mechanical equipment. Therefore, correctly measuring and adjusting bearing clearance is the key to ensuring the normal operation of mechanical equipment. Appropriate bearing clearance is the guarantee for the long-term stable operation of our equipment.