Inspection and analysis of damage causes of ina joint bearing
Inspection and analysis of damage causes of ina joint bearing
2022年4月7日
Methods and diagnostic techniques for identifying whether ina non-standard bearings can be reused
Methods and diagnostic techniques for identifying whether ina non-standard bearings can be reused
2022年4月7日

Three methods to distinguish the quality of ina universal joint bearing and their application selection

  • Size limitations. Generally, the space where ina bearings can be installed is limited. In most cases, the shaft diameter (or bearing inner diameter) is limited by mechanical design or other design. Therefore, the selection of bearing type and size is determined according to the inner diameter of universal joint bearing. 
  • Therefore, the main dimension tables of standard bearings are compiled according to the inner diameter dimensions of international standards.Three methods to distinguish the quality of ina universal joint bearing and their application selection

Three methods to distinguish the quality of ina universal joint bearing and their application selection

  • There are many sizes and forms of scale bearings. Scale bearings are used in the design of mechanical devices. The nature, size and direction of the load of bearings and the load imposed on bearings are changeable. In general, the rated base load is shown on the dimension table. Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • However, axial load and radial load are also important factors in selecting suitable bearings. When the size of the ball and needle roller bearing is commensurate, the needle roller bearing usually has high load capacity and bears large vibration and impact load.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • The speed and allowable speed are determined according to the type, size, accuracy, cage type, load, lubrication mode, cooling mode and other factors of INA Bearing. 
  • The table of universal joint bearing lists the allowable speed of scale precision bearing under oil lubrication and grease lubrication. Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • In general, deep groove ball bearings, self-aligning ball bearings and cylindrical roller bearings are all suitable for high-speed operation.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • Feel the bearing quality through the surface
  • The customer said that as long as the surface of the universal joint is bright, it is wrong. The brightness of the bearing surface should be a kind of dark brightness. The reason for this dark brightness is whether the steel used by the bearing meets the standard, its grinding process and the cutting fluid used, mainly the first two items.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • Whether the chamfer is bright
  • The chamfer of the bearing does not determine the quality of the bearing, but reflects the processing method of the universal joint bearing. The chamfering is black, which means that after quenching and other heat treatment, the hardness of the bearing is increased.
  •  However, some people think that the chamfering is black and not good-looking, which is not completely processed. Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • This is a misunderstanding.Three methods to distinguish the quality of ina universal joint bearing and their application selection.The integrated cage is better than the two bodies. Although the new technology uses the integrated cage, it only saves materials, and its performance on rotation is worse than that of the two bodies.
  • In general, the service life of universal joint bearing is related to three factors. One is the quality of INA Bearing itself. The second is the use environment. The third is the installation method.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • The inner diameter dimension and outer diameter dimension of INA Bearing are manufactured according to the standard tolerance. The fit tightness of bearing inner ring and shaft, outer ring and seat hole can only be realized by controlling the tolerance of journal and seat hole. Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • The matching of bearing inner ring and shaft adopts base hole system, and the matching of bearing outer ring and seat hole adopts machine shaft system.Three methods to distinguish the quality of ina universal joint bearing and their application selection.Three methods to distinguish the quality of ina universal joint bearing and their application selection
Three methods to distinguish the quality of ina universal joint bearing and their application selection

Keep INA Bearing and its surrounding environment clean

  • Even if the dust invisible to the naked eye enters the bearing, it will wear the linear bearing. To put it bluntly, you can’t rub any sand in your eyes. It’s a truth!Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • Second, careful and accurate installation shall be carried out during use and installation
  • It is important not to press with force, not to knock the bearing directly with a hammer, and not to transfer pressure through the body.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • Third, use appropriate and accurate installation tools
  • Try to use special tools and try to avoid using things such as cloth and short fiber.
  • Fourth, prevent the corrosion of INA Bearing and do not use blisters
  • The bearing is made of refined steel, but it is also afraid of water. When taking the linear bearing by hand, fully wash the sweat from your hands and apply high-quality mineral oil before operation.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  •  Pay special attention to rust prevention in rainy season and summer,Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • To correctly select the fit, we must know the actual load conditions, working temperature and other requirements of linear bearing, which is actually very difficult. Therefore, in most cases, the matching is selected according to the use of fine grinding.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • Use factors mainly refer to whether the installation, adjustment, use and maintenance, maintenance and repair meet the technical requirements. According to the technical requirements for the installation, use, maintenance and repair of the universal joint bearing, monitor and inspect the load, speed, working temperature, vibration, noise and lubrication conditions of the INA Bearing in operation. 
  • If any abnormality is found, immediately find out the cause and adjust it to make it return to normal. The installation condition is one of the primary factors in the use factors. The improper installation of the bearing often leads to the change of the stress state between the parts of the whole bearing. Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • The bearing operates in an abnormal state and ends its service life early. The internal factors mainly refer to the three factors that determine the bearing quality, such as structural design, manufacturing process and material quality.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • The metallurgical quality of bearing materials was once the main factor affecting the early failure of universal joint bearings. With the progress of Metallurgical Technology (such as vacuum degassing of bearing steel), the quality of raw materials has been improved.
  •  The proportion of raw material quality factor in bearing failure analysis has decreased significantly, but it is still one of the main influencing factors of ina bearing failure. Proper material selection is still a factor that must be considered in bearing failure analysis.Three methods to distinguish the quality of ina universal joint bearing and their application selection
  • The bearing is divided into two structures with cage and without cage. Among them, large bearings are generally required to bear large loads, often without cage, but filled with rolling elements between inner and outer raceways. Most small and medium-sized rolling bearings have cages.
  • In the processing process of INA Bearing, how do the outer ring, inner ring, rolling element and cage of universal joint bearing fit together. To put it simply, it is to put the inner and outer rings of the bearing first, put the inner ring aside, then put the rolling body on one side, then adjust the position of the rolling body, then put the cage. Cage is also involved in the processing of bearing, so what is the main function of bearing cage?
  • The purpose of the cage is:Three methods to distinguish the quality of ina universal joint bearing and their application selection
  •  And drive the rolling body to roll on the correct raceway;
  • The cage separates the rolling elements at an equal distance and evenly distributes them on the circumference of the raceway to prevent mutual collision and friction between the rolling elements during operation;3. In the release bearing, the rolling element and a ferrule are combined to prevent the rolling element from falling off.
  • The bearing is called the window, which is used to isolate and the rolling element. The pocket clearance makes the cage have a certain amount of activity in the radial and axial directions. The total amount of activity in the radial direction is called the clearance of the cage.
  •  In roller cage, there are many structural types and complex shapes. There are many equally spaced pocket holes on the cage. The pocket shape includes spherical, circular, elliptical, rectangular and tooth shape. Its size is larger than that of the rolling element. 
  • The difference between the two is the pocket gap. Sometimes the connecting part between the bearing cage windows is called lintel, which plays the role of connecting and increasing the strength of the cage.
Three methods to distinguish the quality of ina universal joint bearing and their application selection

Three methods to distinguish the quality of ina universal joint bearing and their application selection

  • The inner diameter dimension and outer diameter dimension of INA Bearing are manufactured according to the standard tolerance. The fit tightness of bearing inner ring and shaft, outer ring and seat hole can only be realized by controlling the tolerance of journal and seat hole. The matching of bearing inner ring and shaft adopts base hole system, and the matching of bearing outer ring and seat hole adopts machine shaft system.
  • Keep INA Bearing and its surrounding environment clean
  • Even if the dust invisible to the naked eye enters the bearing, it will wear the linear bearing. To put it bluntly, you can’t rub any sand in your eyes. It’s a truth!
  • Second, careful and accurate installation shall be carried out during use and installation
  • It is important not to press with force, not to knock the bearing directly with a hammer, and not to transfer pressure through the body.
  • Third, use appropriate and accurate installation tools
  • Try to use special tools and try to avoid using things such as cloth and short fiber.
  • Fourth, prevent the corrosion of INA Bearing and do not use blisters
  • The bearing is made of refined steel, but it is also afraid of water. When taking the linear bearing by hand, fully wash the sweat from your hands and apply high-quality mineral oil before operation. Pay special attention to rust prevention in rainy season and summer,
  • To correctly select the fit, we must know the actual load conditions, working temperature and other requirements of linear bearing, which is actually very difficult.
  • Therefore, in most cases, the matching is selected according to the use of fine grinding.
Three methods to distinguish the quality of ina universal joint bearing and their application selection