01020304050601e-40.0010.010.11spacing = 3.58 orders = 88 Hz-> outer-race defectorder (multiples of shaft rate, 24.6 Hz)velocity amplitude (mm/s rms)The fault is 60 dB down: a linear axis would not show it at allshaft harmonics (normal)gear mesh (31 teeth)sidebands at 3.58x (bearing outer race)