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Oil Bath lubricated bearings
Yes, tractor-trailers are lubricated by Oil Bath Bearings. They
use
the oil bath system because they don't heat-up and cause bearing failure. If you look at it, like, a tractor-trailer traveling up and down the highway at 65mph with a gross weight of lets say 80,000lbs, for approx.10hrs.at a time, those bearings can get pretty hot.
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