Multiple-Fault Detection Methodology Based on Vibration and Current Analysis Applied to Bearings in Induction Motors and Gearboxes on the Kinematic Chain

Table 6

Amplitude at the frequencies of interest for each gear condition without bearing defect and VFD set to 50 Hz.

Condition	Amplitude (×10^−3 m/s^2)
	Healthy	26.73	2.491	5.538	8.179
25%	31.67	1.551	1.721	8.298
50%	40.92	1.659	4.265	17.15
75%	19.69	2.628	3.474	12.49