Maintenance of tapered roller bearing influence life matters needing attention

Judgment can remove the bearing again, when using the tapered roller bearing inspection after cleaning, carefully check the raceway surface, rolling surface, cooperate with the state, the abrasion of cage, bearing clearance whether to increase, and presence of falling damage, abnormal size precision. Non separation of small ball bearings, etc. , the inner ring with one hand flat end, rotate the outer ring confirm whether smooth. Tapered roller bearing separation type bearing, rolling body, the outer ring raceway surface can be respectively. Large bearing can't rotate with the hand, pay attention to check the rolling element and raceway surface, cage and guard surface appearance, bearing the importance of the higher, the need to be careful to check. Judge bearing can use again, according to the damage degree of bearing, mechanical properties, importance, and operating conditions, the factors related to inspection cycle to decide. But check if found any of the following defects, the bearing can't continue to use, need to replace new bearing. 1, viscosity lubrication condition between the rolling contact surface to form a enough to separate the two surfaces of lubricating film, lubricant at normal operating temperature must keep certain minimum viscosity in order to reduce the bearing friction, high bearing life, the main factors of ring to the average diameter of taper roller bearing and working speed. Work viscosity lubricant in the working temperature of viscosity by working at t4 ℃ temperature and according to viscosity glue according to the temperature curve of viscosity ratio is a markers of oil film forming ability, for its speed has a great influence on bearing life, running state variation ( Temperature rise, speed is reduced, dye content increased) Bearing life may be big pollution, lower amplitude. 2, TIMKEN bearing life calculation and influencing factors analysis correction coefficient of correction coefficient calculation method. Analysis of all kinds of influence the correction coefficient for calculate a foundation coefficient of bearing life, make better lubrication conditions of the bearing, should be greater than or equal to the viscosity ratio and not too large, or the increase of the viscosity may make the work of tapered roller bearing temperature rise. When extreme pressure additive lubricating oil should be adopted in addition the pressure between the moving surface can change the lubricating oil viscosity, the symbolic calculation method are taken into account the operating conditions ( Working temperature speed load reproduced size lubrication conditions affect bearing life.