Experimental and Numerical Research Studies on Multifield Coupling Rotordynamic Behaviors of Motor

Table 2

Specification of ball bearing.

Bearing parameter	Value
Number of balls	9
Ball diameter	7.938 mm
Pitch diameter	38.5 mm
Inner race curvature radius	4.09 mm
Outer race curvature radius	4.17 mm
Inner race clearance	0.0025 mm
Outer race clearance	0.0025 mm