Vestas V90-3MW Wind Turbine Gearbox Health Assessment Using a Vibration-Based Condition Monitoring System

Table 2

Specifications of the test’s rig bearings.

MB ER12K bearing Rexnord
Outer diameter (mm)	47
Inner diameter (mm)	19
Pitch diameter (mm)	33.5
Ball diameter (mm)	7.9
Outer ring width (mm)	15.8
Number of ball	8
Contact angle (°)	0