Radial Clearance is Key Factor Affecting Roller Bearing Life Prediction in Tri-Cone Bit

Chang Gen Bu

doi:10.4028/www.scientific.net/AMR.44-46.233

Paper Titles

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A Framework to Integration Development Process
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Process Planning Dynamic Model Based on HOOPN for Top-Down Collaborative Assembly Design
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A Novel Methodology to Manage Uncertainty for Multidisciplinary Design and Optimization in Conceptual Design
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Radial Clearance is Key Factor Affecting Roller Bearing Life Prediction in Tri-Cone Bit
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An Aircraft Tooling Cooperative Design Model Based on Neuron-Endocrine-Immunity Working Principle
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Research on Workflow Modeling Methods for Collaborative Product Development
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Research on Tolerance Analysis System Based on 3D Collaborative Design Platform
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The Parameter Selection System of Vehicle Overall Design Based on Cooperation and Specialty
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 44-46Radial Clearance is Key Factor Affecting Roller...

Radial Clearance is Key Factor Affecting Roller Bearing Life Prediction in Tri-Cone Bit

Abstract:

The life of tri-cone bits will directly affect the economic and technical drilling target. In order to control and evaluate bit’s life, the paper builds up the calculating mathematical model, which is suitable for determination of tri-cone bit’s life, to rationally design the radial clearance of non standard bearings. Effect of the radial clearance on the life of roller bearing was systematically deduced. The larger the radial clearance is; the higher the contact stress is; and the shorter the roller bearing life is. It follows from the model that the key factor of the radial clearance should be taken into consideration besides structure data and anti-friction pair’s heat treatment of roller bearing in order to decrease the contact stress of anti-friction pair and prolong the bit’s life.