Automatic Condition Monitoring of Industrial Rolling-Element Bearings Using Motor’s Vibration and Current Analysis

Table 4

Calculated s within [0, 310 Hz], 20 Hz motor input, free load condition, and axial vibration measurements.

CF (Hz ± 1.5%)	No fault (%)	Inner (%)	Outer (%)
: 40.67	18.75	8.33	9.52
: 61.39	18.12	11.11	80.95
: 81.34	100.63	30.56	20.24
: 98.60	87.50	44.44	23.81
: 122.01/122.78	23.75	15.28	66.67
: 162.68	5.10	6.94	7.14
: 184.17	1.20	9.72	35.71
: 197.20	−1.15	36.11	11.90
: 203.35	1.16	10.56	7.11
: 244.02/245.56	37.5	17.22	45.24
: 295.80	18.75	20.83	16.67
: 306.95	4.60	9.12	51.01