Methods to avoid vibration during operation of fag outer spherical bearing
Methods to avoid vibration during operation of fag outer spherical bearing
2022年4月2日
Improper treatment of Vibration Affecting the stable operation of IKO joint bearing
Improper treatment of Vibration Affecting the stable operation of IKO joint bearing
2022年4月3日

Precautions for fag cylindrical roller bearing burn

  • The so-called fracture refers to a small part of the fracture due to the impact or excessive load exerted by the cylindrical roller bearing on the retaining edge of the raceway wheel or the local part of the roller angle. The reason for this is that the fag bearing was hit during installation. Excessive load. Poor use such as falling.Precautions for fag cylindrical roller bearing burn

Precautions for fag cylindrical roller bearing burn

  • Corresponding measures shall be taken to improve the installation method (hot installation and appropriate tool clamp). Correct load conditions. Fag bearing is installed in place to support the retaining edge.
  • State when fag bearing is jammed
  • The so-called jamming injury is the surface damage caused by the micro burn of the part of the cylindrical roller bearing caused by fag surface injury. Linear scars in the circumferential direction of slide surface and rolling surface. The cycloidal scar on the end face of the roller is close to the clamping wound on the shaft ring surface of the end face of the roller.

Causes of fag bearing jamming

  • Excessive load and preloading. Poor lubrication. Foreign body bite. Deflection of the outer ring and the inclined shaft of the inner ring. The accuracy of shaft and bearing housing is poor.
  • Measures for fag bearing jamming
  • Check the size of the load. The preloading shall be appropriate. Improve lubricants and lubrication methods. Check the accuracy of shaft and bearing housing.Precautions for fag cylindrical roller bearing burn
  • The so-called burn damage state of the bearing refers to that the raceway wheel, rolling element and cage of the bearing are heated sharply during rotation until they change color, soften, deposit and damage.
Precautions for fag cylindrical roller bearing burn
  • The second may be excessive load (excessive preloading). Excessive speed. The clearance is too small. Intrusion of water or other foreign matters. If neither of the above two cases is true, the accuracy of the shaft and bearing housing is poor and the deflection of the shaft is large. 
  • Seeing this, I think everyone wants to know the solution. First of all, we should study the lubricant and lubrication method, select the right bearing lubricant and its dosage, and correct the choice of bearing. The clearance and preloading of cylindrical roller bearing should be studied, and the sealing device should be improved. Check the accuracy of the shaft and bearing housing.
  • According to the inspection results, if the cylindrical roller bearing is found to be damaged or abnormal, please find out the causes and formulate countermeasures according to the phenomenon of bearing damage. If some cylindrical bearings have defects, they can’t be replaced with new ones.

Precautions for fag cylindrical roller bearing burn

  • a. Any one of the inner and outer rings, rolling elements and cage has cracks and fragments.
  • b. Any one of the inner and outer rings and rolling elements has peeling.
  • c. The raceway surface, retaining edge and rolling element are significantly jammed.
  • d. The cage is seriously worn or the rivets are loose.Precautions for fag cylindrical roller bearing burn
  • e. The raceway surface and rolling element are rusty and scarred.
  • 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. Overheated and discolored.Precautions for fag cylindrical roller bearing burn
  • i. The seal ring and dust cover of grease sealed bearing are damaged seriously.Precautions for fag cylindrical roller bearing burn
  • In terms of the long duration of rolling bearing rotation, FAG bearing rotation lasts a long time, stops slowly and has good flexibility. On the contrary, if the rotation time is short and the stop is sudden, the flexibility is not good. 
  • It is not easy to measure the radial clearance of the rolling bearing from the aspect of the radial clearance of the fag bearing, because the measuring force will cause the elastic deformation of the ring of the rolling bearing, the rolling body itself and its contact.
  • In terms of the structure and size of fag bearing, due to the different structural types and sizes of rolling bearing, there should be different requirements for its rotation flexibility. For example, single row centripetal ball bearings and single row centripetal thrust ball bearings.
  • These fag bearings are relatively light when rotating due to the small contact area between the rolling element and the ferrule, while double row centripetal spherical bearings and thrust roller bearings, due to the large contact area between the rolling element and the raceway and the small weight of the outer ring, although a certain load is added when checking their rotation flexibility, their lightness is still not as good as that of single row centripetal ball bearings.Precautions for fag cylindrical roller bearing burn
Technical requirements for Timken non-standard bearing