TourTouriso fAILURE mode classification for Roller bearings
Gear Damage
Failure modes of various machine elements are presented in chapter 7
 

Table 7.1: Failure mode classification for bearings (ISO proposal).
1. Fatigue 1.1 Subsurface fatigue  
1.2 Surface initiated fatigue  
2. Wear 2.1 Abrasive wear
2.2 Adhesive wear  
3. Corrosion 3.1 Moisture corrosion  
3.2 Frictional corrosion 3.2.1 Fretting corrosion
3.2.2 False brinelling
4. Electrical erosion 4.1 Excessive voltage
4.2 Current leakage
5. Plastic deformation 5.1 Overload  
5.2 Indentation 5.2.1 Indents from debris
5.2.2 Indentation by handling
6. Fracture 6.1 Forced fracture  
6.2 Fatigue fracture  
6.3 Thermal cracking  

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