A Novel Fault Diagnosis Model for Bearing of Railway Vehicles Using Vibration Signals Based on Symmetric Alpha-Stable Distribution Feature Extraction

Table 1

Geometrical parameters of the bearings.

Axle box bearing	Outside diameter; (mm)	Inside diameter; (mm)	Pitch diameter; (mm)	Thickness (mm)	Ball diameter (mm)	Ball thickness (mm)
NJ(P)3226X1	250	130	190	80	32	52