Bill, under the right conditions a soft metal or even plastic bushing will wear wear steel more rapidly than a steel bushing. What happens is that the brass, bronze or plastic will pick up particles of abrasive material such as silica sand which can become firmly enough imbedded in the soft metal that it will wear the steel. I had this happen on a piece of equipment that I used to service many of for customers. The manufacturer replaced a bronze bushing with a plastic one hoping to increase the life of thrust washer. What happened was that under most conditions the plastic would load with hard particles and wear into the Thrust washer way faster than the bronze had. There is usually no shortage of dust in your hayfields when baling.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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