Roller bearing reconditioning is a common practice in the railroad industry, with 90% of the bearings in revenue service having been through the reconditioning process. Transportation Technology Center, Inc. (TTCI) is collecting test data on the performance and service life of bearings following reconditioning repairs. The testing for this research project consisted of two phases. Phase 1, now complete, focused on bearing performance. The second, currently under way, concentrates on service life. In Phase 1, the performance of repaired bearings was assessed by examining the operational characteristics of the bearings both before and after the repairs. In Phase 2, service life research will explore how long repairs could be expected to last and any repair features that may extend service life.
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