The vendor is proposing to grind the teeth to ensure good contact along with MPT inspection of all gears, so it sounds like we're going down the right path. They also mentioned that the meshing of the gears, hardness of the gears, and lubrication were all more important aspects, so that checks...
This was the result of bearing failure. We sent it off to be inspected and rebuilt, but discovered the crack in the bull gear. The other components have been visually inspected and MPI tested and confirmed to be in good condition.
We're currently exploring an option we might have of sending a...
I've got a very old large gearbox (50+ years old) in which the bull gear (~26") has a massive crack. The gear company that is working the rebuild effort is suggesting a new forged gear out of a different metal to replace it. They've stated that it will have a similar gear hardness to the...
