Bearings are explored during maintenance
Bearings are explored during maintenance
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The basic rated life and basic dynamic load rating
by：Waxing
2020-09-06
Under a certain load bearing life, bearing running any rolling body or roll ring road appear fatigue pitting, two ring relative operation to the total number of turns (
Laps)
The number of hours or work, called the bearing life.
It also means a new bearing operation to appear fatigue pitting can no longer in use.
Like predict a person's life, for a specific bearing, we do not know the exact life.
But with the aid of related information, such as population survey can predict the life of a group of people.
Similarly, the introduction of the following about basic rated life.
Basic rating life of a group of the same bearing, in the same stress, revolutions, such as running under routine conditions, 10% of the bearing fatigue pitting failure (
90% of the bearing not appeared pitting damage)
When a bearing the total turn turned (
Circle)
Number or work hours is called the basic rating life of bearing.
Use symbols (L
106 r)
Or Lh (
h）
Said.
To be sure: (1) the bearing running condition is different, such as mechanical size is different, is the basic rating life value is not the same;
(2) a bearing can reach or exceed the life value is 90%, the possibility of the reliability of the possibility of less than the value of life is destroyed at a rate of 10%.
Basic dynamic load rating of basic dynamic load rating is refers to the basic rating life of L = 106 r, bearing can withstand maximum load, represented by the letter 'C'.
The greater the basic dynamic load rating, its carrying capacity.
The different type of basic dynamic load rating of bearing C value can check bearing sample or design manuals and other materials.
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