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Digital Twin

Matlab

Simulink

Bearing frequencies

Ball Pass Frequency Outer Race (BPFO) :

$\frac{n}{2} \times \left(1 + \frac{B_d}{P_d} \cos(\beta)\right) \times \text{RPM} $

Ball Pass Frequency Inner Race (BPFI) :

$\frac{n}{2} \times \left(1 - \frac{B_d}{P_d} \cos(\beta)\right) \times \text{RPM} $

Fundamental Train Frequency (FTF) :

$\frac{1}{2} \times \left(1 - \frac{B_d}{P_d} \cos(\beta)\right) \times \text{RPM} $

Ball Spin Frequency (BSF) :

$\frac{P_d}{2 B_d} \left(1 - \left(\frac{B_d}{P_d} \cos(\beta)\right)^2\right) \times \text{RPM} $