What are the characteristics of deep groove ball thin wall bearings?
What are the characteristics of deep groove ball thin wall bearings?
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How to calculate the basic rating life
by：Waxing
2020-11-20
For the requirements of the bearing life according to use environment of different and have very big difference, this is due to the imported bearings of different requirements, so estimate the surprise of life is also very different.
Consider setting appropriate USES and working conditions, therefore, the use of life is very important.
Specified life, rated life calculation: 'the library refers to a set of identical bearing under the condition of the same operation, 90% of the bearing before the material damage due to rotating fatigue can rotate, the total number of revolution.
'That is to say, rated life are extracted from a batch of the sample group of any number of bearings, rotate under certain conditions, to 90% of this bearing before produce material peeling off, still can rotate, the total number of revolution.
: specified life can use the following formula to calculate the bearing at a certain speed, when using bearing fatigue life, time is more convenient.
Cars, vehicles and other general with walking mileage.
Such as the basic rating life of bearing in time, said the life calculation formula is: type: L10h -
-
-
-
-
Basic rated life (
h）
;
n -
-
-
-
-
-
Speed,
r / min)
。
1)
The centripetal ball bearings basic rated life 2)
Thrust ball bearing the basic rating life 3)
The centripetal roller bearing the basic rating life of 4)
Rated thrust roller bearing the basic life style: Cr -
-
-
-
-
The radial basic dynamic load rating (
N)
Ca -
-
-
-
-
The axial basic dynamic load rating (
N)
Pr -
-
-
-
-
Radial equivalent dynamic load (
N)
Pa -
-
-
- - - - - -
-
The axial equivalent dynamic load (
N)
。
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