Condition | Characteristic |
---|---|
NO | The bearing is brand new and in perfect condition |
NW | The bearing is in service for some time but in good condition |
IR | Inner race fault. This fault is created by cutting a small groove in the raceway of the inner race |
OR | Outer race fault. This fault is created by cutting a small groove in the raceway of the outer race |
RE | Roller element fault. This fault was created by using electrical etcher to mark the surface of the balls, simulating corrosion |
CA | Cage fault. This fault is created by removing the plastic cage from one of the bearings, cutting away a section of the cage so that two of the balls were not held at a regular space and free to move |