Research on Rolling Bearing Fault Diagnosis Using Improved Majorization-Minimization-Based Total Variation and Empirical Wavelet Transform

Table 1

Parameters of NUP331E cylindrical roller rolling bearing.

Model	Inside diameter (mm)	Outer diameter (mm)	Rolling element diameter (mm)	The number of rolling element	The contact angle (°)	Pitch diameter (mm)
NUP311E	55	120	16.99	12	0	87.5
NJ311E	55	120	17	13	0	87.5