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Can determine bearing under removal before use, to check in the tapered roller bearings after cleaning, carefully check the raceway surface, rolling surface, with the surface state, cage wear, bearing clearance is increased and injury without affecting the precision drop size, abnormal. Non separation of small ball bearings, plain end with single hand ring, rotate the outer ring to confirm whether smooth.
Tapered roller bearings are separable bearings, can check the raceway surface, rolling body of the outer ring.
Judgment bearing will use again, according to the bearing damage, mechanical properties, the importance, operating conditions, inspection cycle related factors to decide.
But when the examination if found to have the following defects, bearings are not in use, the need to replace the new bearing. 1, the viscosity of lubricating conditions to form an adequate lubrication membrane to separate the two surface between the rolling contact surface, lubricant at normal operating temperature must be kept to the minimum to reduce the viscosity of the bearing friction, high bearing life, the main factors affecting the tapered roller Zhou Chengping diameter and speed work viscosity lubricant viscosity effects. At the operating temperature of known viscosity by working temperature is T4 ℃ by viscosity temperature curve and determine the viscosity ratio is a representation of the oil film forming ability index, with its speed and other factors on the bearing life has a great influence, running state variation (temperature, speed is reduced, the dye to increase bearing life possible) high pollution, decrease.
1, the viscosity of lubricating conditions to form an adequate lubrication membrane to separate the two surface between the rolling contact surface, lubricant at normal operating temperature must be kept to the minimum to reduce the viscosity of the bearing friction, high bearing life, the main factors affecting the tapered roller Zhou Chengping diameter and speed work viscosity lubricant viscosity effects. At the operating temperature of known viscosity by working temperature is T4 ℃ by viscosity temperature curve and determine the viscosity ratio is a representation of the oil film forming ability index, with its speed and other factors on the bearing life has a great influence, running state variation (temperature, speed is reduced, the dye to increase bearing life possible) high pollution, decrease.
Calculation method of calculation and influential factors of 2, Edabearing life factor analysis. Analysis of influence of correction coefficient correction coefficient by a foundation coefficient calculated bearing life, bearing lubrication condition good, should be greater than or equal to but the viscosity ratio can not be too large, otherwise the increase of viscosity may make the tapered roller bearing working temperature increases. When should be used with extreme pressure additives of lubricating oil in addition dynamic surface pressure will also change the lubricating oil viscosity, symbol calculation method are considered operating conditions (temperature speed load size effect reproduced lubrication condition on bearing life.