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simple rolling NTN bearings
Identification method of simple rolling NTN bearings
2022-08-03
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Analysis of correct maintenance method of IKO bearing
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Technical analysis of falling body rolling sound of INA Bearing

  1. When INA Bearing operates under radial load, the inner load area and non load area of INA Bearing. If ina bearing has a certain radial clearance, the rolling element and inner roll in the non load area will not end, and it may contact the outer ring due to centrifugal force alone. Therefore, at low speed, when the centrifugal force is less than the self weight of the rolling element, the rolling element will fall cake and collide with the inner raceway or cage, and stimulate the inherent vibration and noise of INA Bearing
  2. Ina bearings of different sizes will also be produced in a specific range, and their speed ranges are also different.

  3. Rolling sound of INA Bearing is also easy to occur when only radial load is applied and radial clearance is large.

  4.  It may be continuous sound or intermittent sound.

  5. Rolling sound of INA Bearing is easy to produce grease lubrication, but not easy to produce oil lubrication. It is easier to include tax when using inferior grease.

  6.  The motive pilot occurs.

  7. The forced vibration often excites the second-order and third-order bending natural vibration of the outer ring, thus generating transformation.

rolling sound of INA Bearing

Causes of rolling sound of INA Bearing Noise

  1. When using imported bearings, if they make a harsh sound, it means that it is the sound made when sliding between metals. This is the time when ina bearing will not be affected, and it will not affect the normal operation of the bearing. In this case, it will cause unnecessary wear and reduce the service life of the bearing. So how to investigate the cause of the accident and solve it so that the bearing will no longer make a harsh sound? Step, the radial play of bearing is easy to produce this sound when it is very large, and it is also easy to produce this sound when it is running fast, and it is also easy to appear in winter.
  2.  Dirt and sundries such as sand or carbon particles, acids or paint are inadvertently entered into the bearing;
  3.  Water enters into the bearing clearance, resulting in corrosion and corrosion inside the rolling sound of INA Bearing;
  4.  The clearance of imported bearings is too small or too large, resulting in improper selection of bearing size matching;
  5.  Incorrect selection of lubricating oil or grease type; Oil or grease leaks through the seal;
  6. The lubricating oil level is too low, or the seat hole is distorted and not straight;
  7.  The roundness of the flat seat hole clamped by the seat hole of the bearing does not match;
  8.  The uneven sizing block on the bottom surface of the imported bearing seat causes the seat hole to deform rolling sound of INA Bearing, and even cracks and dust particles appear on the imported bearing seat
  9.  There are residues, chips and sundries in the bearing seat hole;
  10. When the sealing ring is eccentric, it touches the adjacent components, resulting in friction;
rolling sound of INA Bearing
  1. Ina bearings are lubricated in several ways, and different types of bearings and types of bearings are lubricated differently, which is more conducive to maximizing the service life of bearings and ensuring that the performance of mechanical equipment is in a state of high efficiency
  2.  Solid lubrication
    Under some special use conditions, a small amount of solid lubricant is added to the grease. For example, adding 3~5% molybdenum disulfide 1 can reduce wear and improve the resistance to pressure and heat. For special conditions such as high temperature, elegance, high vacuum, corrosion resistance, radiation resistance, and extremely low temperature, adding solid lubricant to engineering plastics or powder metallurgy materials can make rolling sound of INA Bearing parts with self-lubricating performance, If the solid lubricant is bonded to the raceway, cage and rolling element with adhesive to form a lubricating film, it has a certain effect on reducing friction and wear.
  3.  Oil lubrication:
    Viscosity is an important characteristic of lubricating oil. The viscosity directly affects the fluidity of lubricating oil and the thickness of oil film formed between friction surfaces. The viscosity of lubricating oil at the working temperature of ina bearing is generally 12-15cst. The higher the speed, the lower the viscosity should be selected, and the heavier the load, the higher the viscosity should be selected. Commonly used lubricating oils include machine oil, high-speed machine oil, turbine oil, compressor oil, transformer oil, cylinder oil, etc.
rolling sound of INA Bearing

Oil lubrication methods in rolling sound of INA Bearing

  1.  Oil bath lubrication
    Oil bath lubrication is a common lubrication method, which is suitable for the lubrication of low and medium speed rolling sound of INA Bearing. A part of the bearing is immersed in the groove, and the lubricating oil is carried by the rotating bearing parts, and then flows back to the oil groove. The oil surface should be slightly lower than the center of the low rolling element.
  2.  Oil dripping lubrication
    Oil dripping lubrication is suitable for bearing components that need a quantitative supply of lubricating oil. The amount of oil dripping is generally one drop every 3-8 seconds. Excessive amount of oil will cause the bearing temperature to increase.
  3. Circulating oil lubrication
    The filtered oil is transmitted to the rolling sound of INA Bearing parts by the oil pump, and the lubricating oil after ina bearing is filtered and cooled before use. Since the circulating oil can take away some heat and cool the bearing, this method is applicable to bearing components with high speed.
  4. Spray lubrication
    Dry compressed air is mixed with lubricating oil through a spray to form an oil mist, which is sprayed into the bearing. The air flow can effectively cool the bearing and prevent the invasion of impurities. This method is suitable for the lubrication of high-speed and high-temperature bearing parts.
  5. Spray lubrication
    Use the oil pump to shoot the high-pressure oil into the bearing through the nozzle, and the oil injected into the bearing flows into the oil groove through the other end of the rolling sound of INA Bearing. When the bearing rotates at a high speed, the rolling element and cage also form airflow in the surrounding air at a relatively high rotation speed. It is difficult to send the lubricating oil to the INA Bearing by using the general lubrication method. At this time, the lubricating oil must be sprayed into the bearing by using the high-pressure injection method, and the position of the nozzle should be placed between the inner ring and the center of the cage.
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