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This work explains and tests the relationship between tribological test conditions, grease rheology and the performance of grease lubricated tapered bearings. These conditions were simulated in a KRL thrust bearing rig, through six test sequences, which targeted the lubrication regimes depicted by the Stribeck-Hersey curve. Sequence completion, severity, grease type and loading determined bearing performance. The starved flow model together with grease rheology explained performance and matched a lubrication regime to each sequence. Grease type and loading are application dependent and are critical to meet performance and cost requirements.Copyright © 2005 by ASME |