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Innovative axle refurbishing method restores bearing geometry and enhances durability, suggesting significant resource savings.
Many bearings are removed from service every year due to conditions of the bearings that could contribute to a bearing failure. Loss of radial or longitudinal clamp load is a major contributing factor in the initiation of bearing burn off. AAR specification M - 967 is designed to restore geometry between the axle and the bearing. The benefits of M - 967 go beyond the restoration of the geometry. Increase in hardness, and resistance to corrosion are benefits which make the process more attractive to users, which results in resource conservation and economic savings.
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George H. Barker (1995) studied this question.
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