Early Fault Detection Method of Rolling Bearing Based on MCNN and GRU Network with an Attention Mechanism

Table 1

Rolling bearing failure test data.

Fault Location	Fault diameter (mm)	Number of points
Normal	0	120000
Outer ring failure (ORF)	0.2	120000
Rolling element failure (REF)	0.2	120000
Inner ring failure (IRF)	0.2	120000