Solution to Failure of Fag Radial joint Bearing Without Reason During Operation
Solution to Failure of Fag Radial joint Bearing Without Reason During Operation
2022年3月29日
Precautions for IKO oil Free Bearing Damage Caused by Oscillation and Temperature During Operation
Precautions for IKO oil Free Bearing Damage Caused by Oscillation and Temperature During Operation
2022年3月29日

Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance

  • When the fag bearing removed during the regular maintenance and operation of the rolling mill bearing equipment and the replacement of peripheral parts is suspended, it is necessary to judge whether the secondary bearing parts can be reused and record the good or bad application conditions.Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance

Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance

  • a. Any one of the inner and outer rings, rolling elements and confrontation frame has cracks and fragments.
  • b. Any one of the inner and outer rings and rolling elements has peeling.Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance
  • c. The raceway surface, retaining edge and rolling element are significantly jammed.Solution to Failure of Fag Radial Joint Bearing Without Reason During Operation
  • d. The standoff frame is severely worn or the rivets are loose and ferocious.Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance
  • e. The raceway surface and rolling element are rusty and scarred.Solution to Failure of Fag Radial Joint Bearing Without Reason During Operation
  • f. The rolling surface and rolling body have significant indentation and indentation.
  • g. There is creep on the inner diameter surface of the inner ring or the outer diameter of the outer ring.
  • h. Overheating and discoloration are fierce.
  • i. The seal ring and dust cover of grease sealed bearing are damaged seriously.Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance
  • The control methods of impact sound of rolling elements are: appropriately reduce the radial clearance, and use the bearing of cage with reasonable structure and flexible material.Solution to Failure of Fag Radial Joint Bearing Without Reason During Operation
  • The second is the raceway sound of rolling mill bearing and its control method. The raceway sound is a smooth and continuous sound made by the rolling body rolling on the raceway surface when the shaft is running. It is a unique basic sound that will occur in all fag bearings. 
  • The general bearing sound is the sound of raceway plus other sounds. The greater the rigidity of the bearing pedestal, the lower the sound pressure level of the raceway sound. If the radial clearance is too small, the sound pressure level and dominant frequency of raceway sound will increase sharply with the decrease of radial clearance.Solution to Failure of Fag Radial Joint Bearing Without Reason During Operation
  • The methods to control the sound of raceway are: select low-noise bearings, that is, bearings with small waviness, and carefully select the service conditions. Raceway noise often affects the noise of the whole machinery. Reducing raceway noise can reduce the noise of the whole machinery.Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance
Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance
  • Then comes the rolling sound of the imported bearing of the rolling mill and its control method. The rolling sound is the harsh metal friction sound that can occur in all occasions of cylindrical roller bearings.
  • It mostly occurs in the larger type of grease lubricated bearings, which is more likely to occur in the grease with degraded base oil performance, and almost does not occur in oil lubrication. 
  • In addition, it is easy to occur in winter. When bearing pure radial load, it is easy to occur in the case of large radial clearance, and it is easy to occur in a specific speed range with different models and sizes, both continuously and intermittently. Special processing methods for the outer ring raceway can prevent the occurrence of rolling sound. 
  • If necessary, this kind of bearing can be selected, or the radial clearance of the bearing can be appropriately reduced, the lubricating grease with excellent performance can be used and the rigidity of the parts matched with the bearing can be improved.Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance
  • However, sometimes, due to the inaccurate measurement of the shaft diameter and the bearing seat hole of the rolling mill, or the roughness of the mating surface does not meet the standard requirements, resulting in excessive interference fit and great extrusion of the bearing race, resulting in the reduction of the radial clearance of the bearing itself, making it difficult for the fag bearing to rotate, heat, aggravate the wear or get stuck.
  •  In serious cases, it will cause the cracking of the inner and outer race of the bearing during installation.Causes of Bearing Noise of Fag Rolling Mill and Regular Maintenance
Technical requirements for Timken non-standard bearing