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"The quality of your bearings is unstable!" When Mr. Hu, a technical service engineer of our company, received a call from Mr. Zhang, the purchasing manager of a motor factory, he felt a little uneasy.The ZV3 grade motor bearings that the customer had just accepted three weeks ago had abnormal noise problems after batch delivery. Mr. Hu rushed to the customer's factory with testing equipment that day. After a series of inspections, Mr. Hu found that the clearance between the motor bearing and the motor housing was obviously abnormal.It turned out that the customer felt that the bearing installation was laborious during the trial production, so he enlarged the inner diameter of the motor housing a little. It was this change that caused the radial clearance of the motor bearing to be too large during operation, and the collision between the steel ball and the raceway produced abnormal noise. "It's like walking in shoes that are two sizes larger. The bearings "dangle" in the loose housing, and the life span is shortened by at least 60%." Mr. Hu explained while measuring the deformed housing with a vernier caliper.In the end, we not only reworked 2,000 sets of motor bearings for free, but also assisted in adjusting the parameters of the later bearings. Now the unqualified rate of the motor has dropped from 23% to 0.5%. Kent Bearing reminds all motor manufacturers: seemingly simple size matching is the result of precise calculation of more than 20 parameters such as material thermal expansion coefficient and assembly stress distribution. Choosing a professional bearing manufacturer can save time and effort, reduce costs and increase efficiency. Kent Bearing always practices the concept of "technical pre-service" and provides customers with value-added services such as matching tolerance calculation and installation guidance for free. You only need to make a phone call +86 19957426729 (Whatsapp), and we will escort your product upgrade throughout the process.

Deep groove ball bearings consist of an inner ring, an outer ring, rolling elements (steel balls) and a cage, with a simple and compact structure. Its working principle is based on the physical property that rolling friction is much smaller than sliding friction. The friction resistance is reduced by rolling the steel balls between the inner and outer rings to achieve efficient transmission.In reducers, deep groove ball bearings play a key role. As an important transmission component connecting the prime mover with the working machine or actuator, the reducer needs to accurately match the speed and transmit torque. Deep groove ball bearings ensure the smooth operation of various components inside the reducer with their excellent load-bearing capacity and high-speed rotation ability.                                                   The application of deep groove ball bearings in reducers brings many advantages. It significantly reduces internal friction, improves transmission efficiency, and makes the reducer more energy-saving and efficient. At the same time, its good radial and axial load-bearing capacity enables the reducer to withstand greater loads and enhances the stability and reliability of the equipment.                                                   In addition, the installation and maintenance of deep groove ball bearings are relatively simple, which reduces the maintenance cost and downtime of the equipment. However, the application of deep groove ball bearings in reducers also faces some challenges. For example, under high load or extreme working conditions, the bearing may be subjected to a large impact force, which will affect its service life. Therefore, when selecting bearings, it is necessary to make reasonable selections according to specific working conditions and load requirements. In general, deep groove ball bearings have been widely used in the field of reducers due to their simple structure, strong load-bearing capacity, and high speed. With the continuous advancement of technology and the improvement of manufacturing processes, deep groove ball bearings will play a more important role in reducers, providing strong guarantees for the efficient and stable operation of mechanical equipment. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

Kent Bearings once provided ZV3 grade sample bearings to a company that focuses on the development of robot motors. The company found that the efficiency of its new motors could not meet the design standards during the test process. It was suspected that there was a problem with the deep groove ball bearing at the front end of the motor, so it was fed back to us. Through precision instrument testing, we found that the friction resistance of the motor bearing was too large, which led to increased motor energy consumption. After in-depth analysis of the reasons, it turned out that the manufacturer did not fully consider the working conditions of the motor's high-speed operation when selecting the bearing, resulting in insufficient lubrication performance of the deep groove ball bearings we provided, and unreasonable sealing structure, resulting in rapid loss of grease, and the bearing was in a dry friction state. At the same time, the manufacturing accuracy of the bearing could not meet the rotation requirements of the motor at high speed. We customized a ZV4 grade deep groove ball bearing with a special lubrication coating and an efficient sealing structure, and optimized the clearance between the bearing and the shaft. After the transformation, the motor efficiency increased by 8%. Kent Bearing specializes in producing high-quality, high-precision deep groove ball bearings. The products have the characteristics of long life, high precision and low noise. They are widely used in motors, household appliances, power tools, garden tools, fitness equipment, water pumps, mechanical equipment and other fields. Kenda Bearing Co., Ltd. is willing to work with you to create greater glory! Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

Ⅰ. Preparation before installationCheck the bearings and accessoriesConfirm that the bearing model and size match the equipment.Check whether the bearing seat, seal ring, and fasteners are intact and free of damage or rust. Clean the bearing seat hole and shaft surface to remove burrs, oil stains or impurities.Lubrication: Spherical bearings are usually pre-installed with grease (such as lithium-based grease). If refilling is required, add according to the instructions (generally fill 1/3~1/2 of the internal space of the bearing).Tool preparation: rubber hammer/soft copper hammer, hydraulic press (if press-fitting is required), torque wrench, heating equipment (for hot fitting). Ⅱ. Installation steps 1. Install the bearing on the shaftCold installation method (common)Align the inner ring of the bearing with the shaft neck, tap the inner ring of the bearing with a hammer (do not directly hit the outer ring or seal, or use a press to apply pressure evenly to ensure that the bearing is pressed into the shaft neck in parallel to the designed position.Hot installation method (when the interference is large)Heat the bearing to 80~100℃ (oil bath or induction heating), quickly insert it into the shaft neck, and tighten it after cooling. 2. Fix the bearingLocking methodTop screw fixing (common): Use an inner hexagon wrench to tighten the top screw on the inner ring of the bearing and press the plane on the shaft (make sure there is a matching plane on the shaft).Eccentric sleeve fixing: Put the eccentric sleeve on the shaft, rotate the eccentric sleeve to lock it, and then fix it with bolts.Fixed sleeve fixing: Adjust the bearing position and lock it with the adapter sleeve and nut. 3. Install the bearing seatInstall the bearing into the bearing seat, making sure the outer spherical surface fits the seat hole.Fix the bearing seat to the equipment base with bolts, tighten the bolts step by step in diagonal order to avoid deflection. 4. Adjustment and sealingClearance check: Manually rotate the bearing to ensure there is no sticking or abnormal sound.Seal confirmation: Check whether the seal is in place to prevent dust or liquid intrusion. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

A manufacturer of air-conditioning compressor motors had a large number of bearing failures during the warranty period, leading to customer complaints. They came to us, hoping that we could solve their bearing problems. After understanding the specific situation, the home appliance manufacturer sent the faulty motor to us.After disassembling and testing the faulty motor, we found that the inner and outer rings of the deep groove ball bearings were severely worn, the raceway surface was rough and uneven, and the grease inside the bearing had dried up and deteriorated. It was learned that in pursuit of production efficiency, the company improperly installed the bearings during the motor assembly process, resulting in damage to the internal structure of the bearing. At the same time, the selected bearing grease has poor stability in high temperature environments and cannot meet the lubrication needs of the motor for a long time.We provide manufacturers with high-temperature resistant and long-life deep groove ball bearings, equipped with special bearing grease. In addition, we also guide companies to improve the bearing installation process. After the improvement, the average service life of motor bearings has doubled, and the company's after-sales department reported that the number of customer complaints has been greatly reduced, affirming our professionalism.KENTBEARING Kenda Bearing is a company focusing on the research and manufacture of high-precision, low-noise ball bearings. We provide products for many industries and are long-term partners of our customers. Currently, Kenda bearings are widely used in motors, household appliances, power tools, garden tools, fitness equipment, water pumps, mechanical equipment and other fields. If you have any bearing problems, Ningbo will contact Kenda. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

Radial spherical plain bearings have an inner ring with a sphered convex outside diameter and an outer ring with a correspondingly sphered but concave inside surface.                                                                         The radial spherical plain bearing is a sliding bearing that can rotate and swing at any angle. It consists of an inner ring, an outer ring and a spherical sliding surface. It is suitable for occasions that bear radial loads and smaller axial loads.The working principle of the radial spherical plain bearing is to use the spherical sliding surface to produce a self-alignment effect when rotating and swinging, so as to ensure that there is always a point contact between the inner and outer rings. This can avoid stress concentration and wear caused by inaccurate installation or shaft bending.                             Advantages:It can adjust the angle within a large range, improving the flexibility and reliability of mechanical operation. Generally, the radial spherical plain bearing can adjust the angle between 15° and 30°. This can adapt to various installation errors, deformations, deviations, etc. .It can work at higher speeds because the spherical sliding surface has good lubrication conditions and low friction coefficients. Generally, the radial spherical plain bearing can reach more than 1,000 revolutions per minute.It can work under conditions of large temperature changes or large temperature differences because it has good thermal stability and fatigue resistance. Generally, the radial spherical plain bearing can work normally between -40℃ and +150℃.It can work in harsh environments because it has good dustproof, waterproof, anti-corrosion and other properties. Generally, radial spherical plain bearings can use sealing structures or special materials to prevent dust, moisture, acid and alkali from entering. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

The bearing retainer has the functions of guiding the movement of rolling elements, improving the lubrication conditions inside the bearing, and preventing the rolling elements from falling off. We have introduced a lot of knowledge about bearing retainers in previous articles. I believe that everyone also knows the two terms of solid retainers and stamped retainers. What is the difference between them?                                            Ⅰ. The difference between solid retainers and stamped retainers1. Different manufacturing processesSolid retainers: Solid retainers are also called machined retainers. They are made by melting and processing some retainer materials specified in the bearing code, usually including metal melting, pocket hole processing, perforation processing, and grinding processes.Stamped retainers: Stamped retainers are a manufacturing process that uses various presses with various shapes of molds to press metal materials or non-metallic materials in a cold state to produce plastic deformation or separation, thereby forming a specific size and shape. Stamping can be divided into several processes: blanking, bending, calendering, forming, three-dimensional pressing or extrusion.                                 Ⅱ. Different materials usedSolid cages: steel, copper, polyamide (nylon 66). At present, solid cages are mainly made of non-metallic materials, among which polyamide has better sliding and self-lubricating properties, but its high temperature resistance is not as good as that of steel and copper solid cages. Stamped cages: Stamped cages are often made of steel plates, and sometimes copper plates. Stamped cages are lighter than metal solid cages.The above is the difference between solid cages and stamped cages. Let's take a closer look at the classification and characteristics of bearing cages.1. Steel cages are divided into stamped and solid. This type of cage has high strength and light material. It is mostly used for deep groove ball bearings, strip roller bearings and most tapered roller bearings. It is generally not affected by the mineral oil machine or alkali oil machine lubricant of rolling bearings. The cage operating temperature can reach 300 degrees Celsius, but it is easily affected by water and water vapor and rusts.2. Brass bearing cages have high tensile strength and mechanical strength comparable to steel plate stamping cages, but the density is relatively small and the limit speed is high. It is not affected by lubricants, including synthetic oils and greases. Brass cages cannot be used in places above 300 degrees Celsius, and are not suitable for ammonia, such as cooling, because ammonia will cause seasonal breakage of brass. The operating temperature must be below 300 degrees Celsius.3. Nylon bearing cages. Nylon materials are highly elastic and lightweight, with very good sliding and self-lubricating properties. They are particularly suitable for situations with vibration impact hard force or high acceleration and deceleration or when the inner and outer rings of the bearing are tilted against each other. The operating temperature is -40-120 degrees. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

In the field of modern mechanical engineering, precision bearings play a vital role. They are like the precision valves in the heart of a machine. Although small, they are of great importance. With their excellent performance, they ensure the stable and efficient operation of various high-end equipment. Precision bearings refer to bearings that have achieved micron-level or even nanometer-level precision requirements through precision machining. They are usually used in high-precision equipment with strict requirements on speed, temperature, vibration, load, etc., such as aerospace, precision instruments, medical equipment and high-speed machine tools. The main characteristics of precision bearings include: high hardness and wear resistance, micron-level dimensional accuracy, high surface finish, extremely low friction, good vibration and noise control. Precision machining standards The machining standards of precision bearings are usually based on international standards such as ISO:492 (bearing tolerances) and ISO:281 (bearing life). The precision requirements usually include:(1) Dimensional tolerance: usually requires tolerances to reach the micron level or even sub-micron level.(2) Geometric accuracy: The raceways, rolling elements and cages of the bearings are required to have extremely high geometric accuracy to reduce friction and heat during operation.(3) Surface roughness: The surface roughness requirement of precision bearings is extremely low, usually Ra ≤ 0.01 µm.(4) Heat treatment and surface hardening: Bearing materials need to undergo precise heat treatment processes to ensure sufficient strength and wear resistance, usually through quenching, tempering and other methods. The precision requirements of precision bearings are extremely stringent, and their dimensional tolerances are usually controlled at the micron level. Some high-precision bearings can even reach the submicron level to ensure stable performance under high-speed rotation and extreme environments. In terms of geometric accuracy, components such as raceways, rolling elements and cages are required to have extremely high shape accuracy and position accuracy to reduce friction and vibration. In addition, hardness is also one of the important indicators for measuring the accuracy of precision bearings. Generally, through precise heat treatment processes, the bearing material reaches a suitable hardness range, thereby ensuring the wear resistance and deformation resistance of the bearing under high loads. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

The so-called cage is actually a small component inside the bearing, which is used to fix and guide the rolling elements. Simply put, it is to keep the balls or rollers in their own tracks inside the bearing, so as not to deviate, collide or even get stuck.The importance of the cage lies in that it determines the performance and life of the bearing. Without a cage, the rolling elements inside the rotating body may wear out prematurely due to extrusion and friction, thereby shortening the service life of the bearing. The cage can also reduce friction and reduce heat accumulation, thereby improving work efficiency.Bearing cages in various situations01High-speed rotationIn high-speed rotating equipment, the cage is particularly important. Because high-speed operation will bring huge centrifugal force and friction, the cage can help evenly distribute these forces and keep the system stable.02High-precision equipmentSuch as precision machine tools, medical equipment, etc., these equipment require high-precision operation, and the slightest error may cause product quality problems. The cage can effectively reduce the operation error and improve the working accuracy of the equipment.03Harsh EnvironmentIn extreme environments such as high temperature, high pressure, and corrosive environments, cages made of specific materials can provide additional protection and extend the life of the equipment. Omitting the cage may cause direct contact between the rolling elements, which in turn increases friction, temperature, and may even lead to sudden failure. It can not only extend the life of the equipment, but also improve work efficiency and precision. In the face of some special environments and high-demand application scenarios, the cage is even more indispensable. Therefore, from the perspective of safety and long-term, the cage is by no means a small part that can be omitted. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

Bearings are very important components in mechanical engineering and various industrial applications. Sliding bearings and rolling bearings, as the two main types of mechanical transmissions, have their own advantages and disadvantages. So, who is the better choice for your equipment? First, let's understand the basic concepts and main differences between rolling and plain bearings. Rolling bearings reduce friction through rolling elements (such as balls or rollers) and are suitable for high-speed, low-load scenarios. Sliding bearings, on the other hand, reduce friction by forming an oil film between the shaft and the bearing through lubricants, and are suitable for low-speed, high-load scenarios. For different problems and application scenarios, let's analyze them specifically:丨High speed application丨Recommended to choose rolling bearings. Due to the lower coefficient of friction of rolling bearings, the running speed is higher, for example, applied in motors or fans. In the selection process, first determine the shaft diameter, load and speed, and then select the appropriate model according to the catalog or engineering manual. This will maximize the advantages of rolling bearings, efficient operation and reduce energy consumption and wear. High load, low speed applications are recommended to choose plain bearings. Sliding bearings perform more stably under high loads and can better withstand shocks and vibrations. When selecting a bearing, first determine the shaft diameter, load and rotational speed, then select the appropriate lubricant, such as mineral or synthetic oil, and determine the oil film thickness according to the nature of the lubricant. This maximizes the advantages of plain bearings, extends equipment life and reduces maintenance frequency.  In summary, bearing selection must be based on the specific application scenario. While rolling bearings excel in many situations, plain bearings also offer irreplaceable advantages under high loads and special working conditions. Understanding this key characteristic can help us make better decisions and improve the efficiency of equipment operation. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

The theoretical advantages of ceramic bearings include low bearing resistance, light weight, and long life. However, ceramic bearings are so expensive, are they really better than metal bearings? Next, let's take a look at the "comparison of the advantages and disadvantages of ceramic bearings and metal bearings". Advantages and disadvantages of ceramic bearingsAdvantages1. Corrosion resistance. In a generally corrosive working environment, ceramic bearings can still be used without obstacles. Can withstand highly corrosive working environments.2. Can withstand temperature changes. Whether the temperature suddenly rises or drops suddenly, the impact on ceramic bearings is relatively small.3. Not easy to deform. Generally, ceramic bearings will not deform due to force because the elastic modulus of ceramic bearings is higher than that of steel.4. Long service life. The density of ceramic rolling balls is lower than that of steel, and the weight is naturally light, so the friction caused by the centrifugal force of the outer ring can be reduced, and the service life of ceramic bearings will naturally become longer.Disadvantages1. Difficult processing and high cost.2. Not impact-resistant and high hardness.3. It cannot "expand and contract" with the equipment. The temperature has basically no effect on ceramic bearings, which is both an advantage and a disadvantage. Advantages and disadvantages of metal bearings over ceramic bearingsAdvantages1. The processing is simpler than ceramic bearings, so the cost is also lower than that of ceramic bearings.2. It is more appropriate to use metal bearings in some equipment.3. Ceramic bearings are not required in most equipment, and metal bearings are sufficient.Disadvantages1. The life is shorter than that of ceramic bearings. In terms of service life, ceramic bearings are much higher than metal bearings.2. It consumes more lubricants than ceramic bearings. When the lubricating oil becomes thinner, the lubrication ability of ceramic bearings is still not lower than the traditional lubricants commonly used in steel bearings.3. Low rigidity. Ceramic bearings are more rigid than metal bearings, and the elastic modulus of ceramic materials is high. Its rigidity is 15-20% greater than that of ordinary steel bearings.4. Compared with metal bearings, ceramic bearings are more corrosion-resistant. Because of the difference in their own materials, the corrosion resistance and wear resistance of ceramic bearings are directly better than those of metal bearings. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)

In the operation of mechanical equipment, the performance of bearings directly affects the stability and life of the entire mechanical system. As an important substance for protecting bearings and reducing friction, the state of bearing grease is directly related to the working efficiency and service life of bearings.In actual use, the phenomenon of blackening and liquefaction of bearing grease often occurs, which not only affects the normal operation of the equipment, but also may indicate potential problems. The blackening of bearing grease is usually caused by high-temperature oxidation. When the bearing is running at high speed or working for a long time, the internal temperature rises, and the additives in the grease react chemically with the base oil to produce precipitates and oxides, which will make the grease darker or even black. Although this phenomenon may not immediately affect the working performance of the bearing, it will accelerate the wear of the bearing and reduce its service life in the long run.Grease liquefaction often occurs in low temperature environments. Under normal circumstances, grease has a certain viscosity and can form a stable lubricating film, but under low temperature conditions, the base oil component of the grease may become too thin, causing the grease to lose its proper adhesion and lubricity. This change will cause the bearing to lack the necessary lubrication at startup, increase the risk of bearing wear, and in severe cases may cause the bearing to get stuck.In response to the above problems, users should take corresponding preventive measures. Choose grease suitable for the working environment of the equipment, such as special grease that is resistant to high or low temperatures, to meet the needs of different working conditions. Add an appropriate amount of grease to keep the bearing and its surroundings clean and prevent impurities from entering the bearing and affecting the performance of the grease.In summary, the blackening and liquefaction of bearing grease are issues that cannot be ignored in bearing maintenance. Through scientific management and maintenance, the service life of the bearing can be effectively extended and the stable operation of mechanical equipment can be guaranteed. Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)