Damage of the outer spherical bearing common considerations for analysis

Timken bearing if get good lubrication, and cut off the right moisture and debris, said oil seal should not wear. However, when open the bearing box, best to check outer spherical bearing and periodically check the oil seal. Check of the condition of the near the bearing oil seal, in order to ensure that they are enough to prevent hot liquid along the axis of infiltration or corrosive liquid or gas bearing, oil seal if already wear should be replaced as soon as possible. High temperature often said bearing is in abnormal situation. High temperature also harmful to within the bearing lubricant. Sometimes bearing overheating can be attributed to the timken bearing lubricant. If the bearing in more than 125 degrees Celsius temperature operation for a long time, will reduce the bearing life. The causes of high temperature bearing include: insufficient lubrication or excessive lubrication, lubricants containing magazine, heavy load, outside the spherical bearing damage, clearance, and the oil seal of high temperature and friction and so on. Bearing roller and the inner and outer ring raceway surface under the role of the periodic pulse load, resulting in a periodic change of contact stress. When stress cycles after reaching a certain value, the rolling element bearings, their work within or surface produce fatigue spalling. If the bearing load is too big, can make the fatigue. In addition, the 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. Burn the outer spherical bearing the heat tint of raceway and rolling body. Burns is usually the cause of insufficient lubrication, lubricating oil quality does not conform to the requirements or metamorphism, and bearing assembly too tight. Bearing raceway and roller contact surface appear uneven pits, bearing produce 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 the bearing. Retainers metal adhesion on the rolling body possible reason is that roller was stuck in a cage or insufficient lubrication. Cause crack of the bearing race may be bearing fit tight, outside the spherical bearing loose foreign or inner ring, bearing deformation, inclusive of installation of bearing surface processing etc. Timken bearing cage fracture reason is the insufficient bearing lubrication, rolling body, seat skew, etc. 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.