Optimal Statistical Feature Subset Selection for Bearing Fault Detection and Severity Estimation

Table 4

Dataset B for fault severity detection.

Class	Fault type	Fault size	No. of train samples	No. of test samples
Normal	—	—	2663	651
IR 007	Inner race	0.007″	1135	292
IR 014	Inner race	0.014″	1139	277
IR 021	Inner race	0.021″	1152	269
IR 028	Inner race	0.028″	373	98
OR 007	Outer race	0.007″	1158	267
OR 014	Outer race	0.014″	1126	296
OR 021	Outer race	0.021″	1134	291
BB 007	Ball bearing	0.007″	1131	288
BB 014	Ball bearing	0.014″	1136	289
BB 021	Ball bearing	0.021″	1125	299
BB 028	Ball bearing	0.028″	376	95
	Total		13648	3412