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in 1943 that was first displayed at the 1948 Chicago Rail Fair. It was a rolling advertisement for a new way of reducing friction - roller bearings (made by the Timken Roller
Bearing Company). The car's trucks lacked the then common axle journal boxes, with the bearings mounted on the ends of the
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was fitted with Timken roller bearings, and they were also retrofitted to some of the
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British steam locomotives also used roller bearings. The
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railroads for demonstration runs, and was purchased by the
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The Santa Fe was the first company to have roller bearing
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