Load Rating and Bearing Life (continued) __________________________________________________________________
Based on the previous discussion, the following
steps should be taken to calculate estimated real-world bearing life
in revolutions x 106:
BEARING LIFE
CALCULATION |
1. |
Obtain C and Co Load
ratings for chosen bearing individual
tables |
2. |
Radial play gives αo initial
contact angle from formula or chart |
3. |
Input actual loads Fr,
Fa into nomographs to determine equivalent
loads Pr, Pa. |
4. |
Use P = Pr + Pa in basic L10 formula, derating C for high
temperature, if necessary |
5. |
Apply general correction factors
according to material and operating
environment |
|
Important
Note: This result is an estimate. No representations are made
concerning the performance of bearings in any given application.
Good engineering practice dictates that if the required bearing life
is close to the calculated limit, then a larger bearing size should
be selected. |
|
