Intelligent Roller Bearing Fault Diagnosis in Industrial Internet of Things

Table 4

Experimental data of the roller bearings.

Fault category	Fault tolerance (mm)	Motor speed (rpm)	Number of samples	The fault severity
NR	0	1785	51	Normal
IRF	0.1778	1785	51	Slight
BF	0.1778	1785	51	Slight
ORF	0.1778	1785	51	Slight