Old 1st Jun 2016, 21:54
  #1052 (permalink)  
Join Date: Oct 2007
Location: London
Age: 57
Posts: 47
Originally Posted by TylerMonkey View Post
I am curious if this (looks like a) similar crack radiating out from the inner race has ever been discussed since the event.

Don't remember any comments . . . .

I think if you compare the shape of the inner edge,(raceway) you will see that cracked gear you point to is "ovalised" compared to the other example. The location of the crack is where the tensile loads caused by the ovalisation would be very high. I expect the crack to turn out to be as a result of overload. If it was a fatigue crack it would remain 'tight' ( both fracture faces close together) until the remaining material failed in overload. The fact that this crack is "open" also supports the possibility of an overload scenario.
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