Automatic Bearing Fault Feature Extraction Method via PFDIC and DBAS

Table 2

Bearing fault characteristic frequencies.

	Balls: 12	Contact angle: 0	Ball diameter: 18 mm
	Pitch diameter: 87.5 mm		RPM: 100
	Fault characteristic frequency
Outer race fault	7.94 Hz
Inner race fault	12.06 Hz
Roller fault	7.76 Hz