Distortion Of Speed Changer Housings And Resulting Gear Failures
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Gear case distortion due to thermal effects has caused unique and costly failures at several of Union Carbide's process plants. The unusual nature of these failures has prompted us to make an in-depth logical investigation considering the most obvious as well as the not so obvious reasons for failure. Diagnosis indicates that distortion of the housing due to temperature variations, including changes in ambient and the design of the internal lubrication and gear mesh cooling spray, is more significant than previously suspected. Several examples illustrating the problems and their solutions, including the field mechanical and optical measurement methods, are discussed.
Van Laningham, Fred L. (1976). Distortion Of Speed Changer Housings And Resulting Gear Failures. Texas A&M University. Gas Turbine Laboratories. Available electronically from