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Bearing life and problems
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1. The number of exhausted life: the raw material of the primary moving parts of the bearing reaches the limit; the cumulative time before the bearing fails.
1) Additional dynamic load: the life is 10,000 rpm; the bearing can accept the load.
2) Equivalent dynamic load: refers to the assumed load of the bearing's practical load converted according to the working conditions of the dynamic load.
2, wear life: bearing due to normal wear; clearance increased to the limit of the working hours before the limit. As far as the current bearing industry level; should wear life; but in practice traction motor is the opposite.
3, the number of illnesses: bearing problems; the cumulative working hours before the loss of working capacity.
4, the use of the number of life: is the above three kinds of life refers to the general reference; in theory it refers to the fatigue life of the bearing; in normal operating conditions, the bearing wear life; in the condition is not normal; production no shortcomings ; represents the number of illnesses.
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