BearingLife:

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   Equivalent bearing load and bearing life.
   Select bearing category.
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   Form:
   [ bLoad, bLife ] = BearingLife( d )
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   ------
   Inputs
   ------
   d          (1,1)  Data structure
                     .x          (1,1)  Radial Load Factor (lbs)
                     .fRadial    (1,1)  Radial Load
                     .y          (1,1)  Axial Load Factor
                     .fAxial     (1,1)  Axial Load (lbs)
                     .c          (1,1)  Dynamic Load Rating (lbs)
                     .rpm        (1,1)  Rotational Speed (rpm)

   -------
   Outputs
   -------
   bLoad         (1,1)  Equivalent Bearing Load (lbs)
   bLife         (1,1)  Bearing Life (hrs)

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   Reference: ISO Standards

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