Page 257 - Intro Predictive Maintenance
P. 257

248       An Introduction to Predictive Maintenance


























                                Figure 10–4 Pattern caused by corrosive attack on
                                gear teeth.



























                                Figure 10–5 Pitting caused by gear overloading.



         Overloading
         The wear patterns generated by excessive gear loading vary, but all share similar com-
         ponents. Figure 10–5 illustrates pitting caused by excessive torsional loading. The pits
         are created by the implosion of lubricating oil. Other wear patterns, such as spalling
         and burning, can also help identify specific forcing functions or root-causes of gear
         failure.
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