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The types of bearings vary and their functions are different. Some friends are not very familiar with FAG angular contact ball b earings , so let's briefly explain these products.     Single row angular contact ball bearings are self-retaining units with solid inner and outer rings, as well as ball and nylon, steel or brass cage assemblies. The inner and outer ring raceways are offset from each other in the axial direction of the bearing. Available in open and sealed bearings . Their self-aligning ability is small. Many sizes of angular contact ball bearings are designed by X-life. These bearings are shown in the dimension table. X-life quality FAG bearings have an improved raceway shape and optimized surface. This results in a significant increase in the fatigue limit load of the bearing. In the revised service life calculation, the life value has increased by more than 50%. Therefore, in certain applications, smaller bearings can be used if necessary. Double row angular...

Core Tip: What is the state of rolling imported bearings to be repaired? It is the best time to determine the repair of NSK bearings . It is better to change the condition of rolling bearings to work, which is better from bearing damage. It is better to roll the imported bearings to what state to transfer to repair. First, determine the best time for NSK bearing repair        It is better to change the state of the rolling bearing to the repair, which is judged from the damage law and characteristics of the bearing. The damage of the most used small and medium-sized bearings is usually based on fatigue and excessive wear of the ferrule or rolling element. When the rolling surface of the bearing enters the third stage of wear, or pitting and spalling have occurred, the bearing will quickly become ineffective, and the damage of the raceway surface is already severe, the repair is difficult, or the repair value has been lost.        However,...

The use factors mainly refer to whether the installation adjustment, use and maintenance, maintenance and repair, etc. meet the technical requirements. According to the technical requirements of KOYO bearing installation, use, maintenance and maintenance, monitor and check the load, speed, working temperature, vibration, noise and lubrication conditions of the bearing in operation, find out the cause and immediately adjust the cause, make adjustment It returned to normal. The installation condition is one of the primary factors in the use factor. The bearing is often changed due to improper installation, and the force state between the parts of the whole bearing changes. The bearing is operating in an abnormal state and the end of the service life is early. Refers to the three major factors that determine the quality of the bearing, such as structural design, manufacturing process and material quality. The metallurgical quality of imported bearing materials was once the main facto...

1. In the process of using NTN bearings , regular cleaning is very important. How to clean the bearings accurately? When the bearing is first removed for inspection, first use the method of photography to make a good appearance record. Also, verify the amount of lubricant remaining and sample the lubricant before cleaning the bearings. 2. The cleaning of the bearing is divided into rough washing and fine washing, and the metal mesh frame can be placed on the bottom of the used container. 3. When rough washing, clean the grease or adhesive with a brush on the top of the oil. At this time, if the transfer bearing is moved in the oil, the rolling surface is damaged by foreign matter such as foreign matter. 4. When fine washing, slowly shifting the bearing in the oil, it must be forced to stop. 5. The cleaning agent used on weekdays is neutral non-aqueous diesel or petroleum, and sometimes uses warm alkaline liquid according to demand. Regardless of which cleaning agent is used, ...

Bearing failures are often due to a variety of factors, all design and manufacturing process factors and SKF bearing failures, and their analysis is not easy to determine. Under normal circumstances, in general, you can consider and analyze factors and internal factors. The main factors used for adjustment are installation, use and maintenance, maintenance, etc. in line with technical requirements. The mounting conditions are one of the factors that use the bearing is the primary factor that often causes the change in state of the state between the various parts of the package, the operation in the abnormal state and early failure. According to the technical requirements of the installation, use, maintenance and maintenance of SKF bearings , the bearing contact load, speed, temperature, vibration, noise and lubrication status are monitored and checked, and abnormalities are immediately found to find the cause and adjusted back to normal. In addition, the quality of the grease and t...

At the time of inspection, it is mainly correct to observe whether the rivet head of the bearing is skewed or loosely welded. The welding of the cage is good or bad. Whether the solder joint is too small, there is a problem that the solder is not strong, or the ball is caused by excessive soldering. They are all special places to pay attention to when testing FAG bearings . There are still some issues to be aware of. Let's share with you the test of the local part of the bearing in years of work experience. First of all, the inspection of the FAG bearing in the environment should be carried out in a light environment, preferably astigmatism, in order to better observe the outside of the FAG bearing and see that there are no cracks and other abnormalities on the surface. For example, wear, scratches and bumps in the mechanical cloud process can cause the FAG bearing device to shift, resulting in poor position of the device, causing flat load and stress concentration, and reducin...

Improper lubrication accounts for 36% of the causes of premature failure of INA bearings. General purpose greases do not meet the needs of a wide variety of special bearing applications, using only one or all common greases for all miniature bearing applications. The problems caused will far outweigh the benefits of the unified brand. Bearing application conditions are very diverse, the correct lubrication is required to match the grease and bearing application conditions. Bearing grease is the basis for smooth, worry-free operation and maximum reliability, even under the most extreme operating conditions. Grease prevents contaminants from entering micro-bearings, cushioning shock loads and preventing corrosion. Choosing the right grease in practical applications is the basic condition for obtaining the maximum service life of the bearing. The criteria for proper lubricant selection include the type and size of the INA bearing, temperature, speed, load, and expected service life...

1. Contact fatigue failure Contact fatigue failure refers to the failure of the working surface of the NTN bearing due to the alternating stress. Contact fatigue spalling occurs on the working surface of NTN bearings, often accompanied by fatigue cracks, first from the maximum alternating shear stress below the contact surface, and then extended to the surface to form different spalling shapes, such as pitting or pitting , peeling off into small pieces called shallow peeling. Due to the gradual enlargement of the exfoliation surface, it tends to expand deeper and form deep exfoliation. Deep exfoliation is a source of fatigue in contact fatigue failure. 2, wear and tear Wear failure refers to the failure of the relative sliding friction between the surfaces resulting in the continuous wear of the metal on the working surface. Continued wear and tear will cause gradual damage to the NTN bearing parts and ultimately lead to loss of dimensional accuracy of the NTN bearing and othe...

The easiest way to apply a preload is to use a spring or spring set. The spring acts on the outer ring of the IKO bearing that can move axially. Even when the IKO bearing has an axial displacement due to thermal expansion, the preload force remains substantially constant. Applying a load through a spring is a common method of applying a preload to an angular contact ball bearing of a high speed grinding king shaft, but this method is not suitable for IKO bearing applications that require high stiffness, load direction changes, or uncertain impact loads. The angular contact ball bearing section gives specific recommendations for applying a preload with a spring. For more information and purchase please visit: https://www.supplyforever.com

We know that imported bearings play an irreplaceable role as the core components of many mechanical equipment. But as an external device for imported bearings , we must also pay enough attention. After checking the oil level, if the oil quantity is found to be insufficient, oil should be injected from the fuel filler port or the oil level hole, and the oil level hole is added to the oil level or the oil level reaches the limit position of the scale. When changing oil, first need to drain oil, the oil temperature should reach 40-50 °C, and the oil should be discharged under disturbance, so that the dirty oil can be drained thoroughly and cleaned. In this way, before the lubricant is discharged, the roller warming oil should be started first, so that the hot oil flows out quickly, and the impurities in the tank are more easily mixed with the oil. For the transaxle, wheel planetary reducer and exciter oil chamber, because the exposed part of their housing is rotating, it is necess...

When choosing the right seal design for a timken bearing application, the type of lubricant, operating environment, application speed and overall operating conditions must be considered. Shaft surface roughness It is important to ensure that the machining of the shaft surface does not produce spiral flutes, as the spiral flutes can cause the lubricant to squeeze out or cause contaminants to enter the timken bearing gap. Forming grinding usually achieves satisfactory surface roughness requirements. 2. Grease lubrication - exhaust When grease lubrication and friction or non-friction sealing instruments are used, an exhaust port should be provided in the bore between the two bearings . This prevents contaminants from entering the bearing through the seal when there is a pressure differential between the timken bearing cavity and the atmosphere. 3. Vertical shaft seal - oil lubrication Lubricating timken bearings for vertical shafts is a difficult problem. For reasons of sim...

The model prefix and suffix of SKF bearing four-row tapered roller bearing are explained as follows SKF bearings that meet SKF Explorer performance specifications are identified with a suffix E that comes standard with case hardened steel inner and outer rings. The spiral groove on the hole is also a standard structure. Therefore, the relevant suffixes (HA1 and G) are not used for such SKF bearings. A, B, C or a combination of these letters: a modified interior design E SKF Explorer bearing without spacer EX SKF Explorer bearing with spacer E(X)1 SKF Explorer bearing with hydrogenated nitrile rubber (HNBR) seal, other specifications are the same as VA901 E(X)2 SKF Explorer bearing with hydrogenated nitrile rubber (HNBR) seal, other specifications are the same as VA902 E(X)3 SKF Explorer bearing with hydrogenated nitrile rubber (HNBR) seal, other specifications are the same as VA903 G bearing bore with spiral groove HA1 case hardened steel outer ring and inner ring ...

INA oil film bearing is a radial sliding bearing with lubricating oil as the lubricating medium. Its working principle is: during the rolling process, due to the rolling force, the roller journal is forced to move, INA oil film bearing center and shaft The center of the neck is eccentric, so that the gap between the INA oil film bearing and the journal forms two regions, one is called the divergent zone (the gap gradually increases along the direction of the journal rotation), and the other is called the convergence zone (the direction of rotation along the journal) slowing shrieking). When the rotating journal brings the viscosity of the lubricating oil from the dispersing zone into the convergent zone, the bearing clearance changes from large to small along the direction of the journal rotation, forming an oil wedge to generate pressure in the lubricating oil. The combined force of the pressure at each point in the oil film along the rolling direction is the bearing capacity of th...

The rolling sound is due to the rolling of the rolling elements in the raceway when the NTN bearing rotates to excite a smooth and continuous noise, which only attracts attention when its sound pressure level or tone is extremely large. In fact, the sound energy excited by the raceway sound is limited. For example, under normal conditions, the quality of the 6203NTN bearing raceway is 25~27dB. This type of noise is the most typical of single row deep groove ball NTN bearings that can withstand radial loads. It has the following characteristics: a. Noise and vibration are random; b. The vibration frequency is above 1 kHz; c. Regardless of the change in the rotational speed, the main frequency of the noise is almost constant and the sound pressure level increases as the rotational speed increases; d. When the radial clearance increases, the sound pressure level increases sharply; e. NTN bearing housing rigidity increases, the lower the total sound pressure level, even if the...

Affecting the service life of SKF bearings may have many factors that may be caused by factors and internal friction sounds have been further explained and used. The main factors used for adjustment are installation, use and maintenance, maintenance, etc. in line with technical requirements. According to the technical requirements of the installation, use, maintenance and maintenance of the bearing, the bearing contact load, speed, lubrication state monitoring and inspection, and the direct cause of the abnormality are adjusted back to normal. 1, choose the right viscosity and good viscosity temperature In order to make the machine tool spindle temperature not too high, the machine tool will be thermally deformed, affecting the machining accuracy or making the bearing poorly lubricated. The lubricating oil of the appropriate temperature should be selected according to the spindle bearing structure, the rotating speed and the bearing clearance, and it is required to have good visco...

Rolling bearings make precision parts, so they need to be cautious when using them. They use high-performance bearings . If they are not used properly, they can not achieve the expected performance. Therefore, the following items should be used when using Schaeffler bearings: Keep the bearings and their surroundings clean. Even if the smiling dust that is invisible to the naked eye enters the bearing, it will increase the wear, vibration and noise of the bearing. Care must be taken when using the installation. Strong stamping is not allowed. It is not allowed to directly hit the bearing with a hammer. It is not allowed to transmit pressure through the rolling elements. Use suitable and accurate installation tools, try to use special tools, and try to avoid the use of cloth and short fibers. To prevent the corrosion of the bearing, when taking the bearing directly by hand, wash the sweat on the hand and apply it with high-quality mineral oil before handling. In the rainy season an...

Stainless steel is the most common bearing material in imported bearings, and it is also the most practical. Of course, the cost is also fluctuating with the price of steel, so the price of stainless steel bearings is also fluctuating frequently. Another point is that the bearing steel used in stainless steel bearings is also divided into many types, depending on various application environments and performance requirements. Stainless steel bearings can organize batch production, achieving high strength and high precision. It can be used in a wide range of products that are easy to corrode and corrode. Product characteristics: The bearing ring and rolling element material are vacuum-quenched and tempered by AISI SUS440C stainless steel (domestic code: 9Cr18Mo, 9Cr18). The frame material of the cage and seal ring is made of AISI304 stainless steel (domestic code: 1Cr18) Compared with ordinary bearing steel, stainless steel bearings have stronger rust and corrosion res...

In order to ensure satisfactory performance, needle roller/angular contact ball bearings, like all ball bearings and roller bearings , must always withstand a certain minimum load acting on the radial and axial directions, especially if they are to be operated at high speed or Subject to rapid acceleration or rapid changes in load direction. Under these conditions, the inertial forces of the rolling elements and the cage and the friction of the lubricant may have a detrimental effect on the rolling condition of the bearing arrangement and may cause destructive sliding between the rolling bodies and the raceways. The minimum necessary radial load applied to a radial needle bearing can be estimated using the following formula: Frm = 0.02 C The minimum necessary axial load for angular contact ball bearings can be calculated using the following formula: In the middle Frm = lowest radial load, kilonewton Fam = lowest axial load, kilonewton C = basic dynamic load rating (see ...

Rolling bearing outer ring fault frequency: BPFOr≌0.4Nn Rolling bearing inner ring fault frequency: BPFIr≌0.6Nn Rolling bearing cage failure frequency: FTFr≌0.4N The above symbols: n = number of rolling elements. N = speed of the shaft. Note: 1. The rolling bearing does not slide; 2. The rolling bearing geometry does not change; 3. The bearing outer ring is fixed and does not rotate. Rolling bearing outer ring fault frequency: BPFOe≌N (0.5n-1.2) Rolling bearing inner ring fault frequency: BPFIe≌N (0.5n+1.2) Rolling bearing rolling element failure frequency: BSFe≌N (0.2n-1.2/n) Rolling bearing cage failure frequency: FTFe≌N (0.5-1.2/n) The above symbols: n = number of rolling elements. N = speed of the shaft. Note: 1. The rolling bearing does not slide; 2. The rolling bearing geometry does not change; 3. The bearing outer ring is fixed and does not rotate. For more information and purchase please visit: https://www.supplyforever.com

    Premature aging of rolling bearings will cause equipment to stop. Now we combine the author's motor maintenance practice to introduce the experience of preventing premature aging of rolling bearings. The reasons for premature aging of rolling bearings are: too tight, poor lubrication, misalignment, strong vibration, material fatigue, pollution and corrosion. Tight fit When the inner ring of the bearing is forcibly inserted into the journal, the lighter will cause a severely worn circular path at the bottom of the raceway, and the heavy one will have cracks or peeling on the inner and outer rings of the slideway and the ball. Reason: The gap between the ball and the slide is too small, the torque is increased, the friction is increased, and the working temperature of the bearing is too high, which causes the bearing wear and fatigue to deteriorate and fail. Prevention method: Restore the radial clearance of the bearing and reduce the interference. There are two w...