Fault Diagnosis of Bearings with Adjusted Vibration Spectrum Images

Table 4

Description of bearing datasets for multifault severity detection.

Dataset	Training data	Testing data	The number of samples	Fault type and severity	Classification label
G1/G2/G3/G4/G5	Load 0/Load 1/Load 2/Load 3/Load 0-3	Load 0–3	50/50/50/50/200	Normal	1
			50/50/50/50/200	0.007 in	2
			50/50/50/50/200	0.014 in	3
			50/50/50/50/200	0.021 in	4
			50/50/50/50/200	0.007 ball	5
			50/50/50/50/200	0.014 ball	6
			50/50/50/50/200	0.021 ball	7
			50/50/50/50/200	0.007 out	8
			50/50/50/50/200	0.014 out	9
			50/50/50/50/200	0.021 out	10

Normal means the testing bearing is normal. 0.007 in means inner-race fault diameter of 0.007 inches; 0.007 ball means ball fault diameter of 0.007 inches; and 0.007 out means outer-race fault diameter of 0.007 inches, etc.