Posted by Eagle Beagle on November 27, 2018 at 10:02:14 from (47.222.117.191):
In Reply to: Re: gears posted by Mike(NEOhio) on November 27, 2018 at 09:39:11:
The center of the tooth contact is a good indicator of wear and the presence of spalling and contamination, but the very bottom of the tooth is where small pitting ( hard line contact wear ) and chipping of the outer edge comes into guesstimating the number of hours of operation are left in a gearset.
My good friend had a job for more than thirty years estimating the life expectancy of gearbox's and open tooth gear trains on the 100 yard and bigger draglines in southern open pit coal mines. Most electric producers knew almost to within a week when to expect a failure.
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