INA self-aligning roller bearing common damage performance analysis

Self-aligning roller bearing damage for many reasons, such as: ( 1) Than previously estimated load; ( 2) The effective seal; ( 3) Tight fit too small, as a result of bearing clearance, and so on. Any of these factors factors there is its special damage forms and will leave a special signs of deterioration. Examine the damaged bearing, therefore, in most cases can be found its possible reasons. Self-aligning roller bearing removing check, according to the damage judgment of INA bearings bearing fault and damage. 1. Metal flake bearing raceway surface and inner and outer ring raceway surface under the role of the periodic pulse load, resulting in a periodic change of the contact stress. When the stress cycles after reaching a certain value, the bearing on the working plane or inner and outer ring raceway fatigue spalling. If the bearing load is too big, can make the fatigue. In addition, INA bearing installation is not straight, shaft bending, also can produce roll flaking off. Bearing raceway fatigue spalling can reduce the running accuracy of shaft vibration and noise in the organization. 2. Bearing burn burn bearing heat tint on the raceway, bearing. Burns is usually the cause of insufficient lubrication, lubricating oil quality does not conform to the requirements or metamorphism, and bearing assembly too tight. 3. Plastic deformation of bearing raceway and roller contact surface appear uneven pits, spherical roller raw plastic deformation. The reason is bearing under static load or shock loading, local stress exceeds the yield limit of material on the surface of the work, this kind of situation usually happened in the low-speed rotation of INA bearings. 4. Bearing race crack cause crack of the bearing race may be bearing fit tight, loose foreign or bearing inner ring, bearing deformation, inclusive of installation of bearing surface processing etc. 5. Cage fracture, its reason is the insufficient lubrication bearing, seat skew, etc. 6. Retainers metal adhesion on the bearing possibility is bearing was stuck in a cage or insufficient lubrication. 7. Seat ring raceway serious wear and tear may be fall into the object in seat, lack of lubricating oil or lubricant brand is not appropriate. Generally speaking, a third of the spherical roller bearing damage is the result of fatigue damage, a third of the other is the result of bad lubrication, results from the third part of the other pollutants enter bearing improper handling or installation. However, the damage form is also related to the industrial difference. Pulp and paper industry, for example, mostly due to bad lubrication bearing damage or contamination is not due to material fatigue; General bearing used in the manufacturing enterprises are caused by fatigue. Is not only a precious self-aligning roller bearings need maintenance, common INA bearings is also need maintenance, after all, a small screw is affect the global, if you think you can use longer bearing, please always pay attention to these aspects.