Not sure what they use now days, but the USS America, and the USS William V Pratt, the two ships I served on, both had babbited bearings on the main shafting. I got to watch the ship yard guys take the first line shaft bearing, behind our main thrust block, and scrap a freshly babbited bearing for it. What was strange about the whole thing was that the shaft was around 24 inches in diameter, but had about a .010 bow in it. As a result they had to scrape the bearing a little out of round to accommodate the misalignment to keep the shaft from being too tight and overheating. It took them several days of bluing it, rolling it in and out, and scraping in between to get it right, but eventually it was back together and rolling great.
There are still a few places out there with the tools and knowledge to rebabbit bearings, but for the most part is seems to be a dying art.
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Today's Featured Article - New Life for an Old Allis - by Tyler Woods. My friend Jon, has an old '39 Allis Chalmers B. He thought it a marginal tractor that had long since served its time. She smoked terribly and never had much power but he couldn't afford another so he was limping along with what he had. Jon's Allis has a small front loader and though it doesn't carry much, it serves his needs. It was the hard starting and low power that made him think it was time to replace the old girl. Jon called me to help him discover why his tractor wouldn't start
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