Radial Clearance is key factor Affecting Roller Bearing Life Predictionin Tri-cone Bit

摘要：

The life of tri-cone bits will directly affect the economic and technical drilling target.Inorder to control and evaluate bits life,the paper builds up the calculating mathematical model,whichis suitable for determination of tri-cone bits life,to rationally design the radial clearance of nonstandard bearings.Effect of the radial clearance on the life of roller bearing was systematicallydeduced.The larger the radial clearance is; the higher the contact stress is; and the shorter the rollerbearing life is.It follows from the model that the key factor of the radial clearance should be taken intoconsideration besides structure data and anti-friction pairs heat treatment of roller bearing in order todecrease the contact stress of anti-friction pair and prolong the bits life.

关键词： Tri-cone bit Radial clearance Contact stress Roller bearing Life Prediction

作者: C.G.Bu

作者单位: China University of Geo-sciences Beijing 100083 China

会议类型: 国际会议

会议名称: 2008 International Conference on Advances in Product Development and Reliability(2008年产品开发与可靠性进展国际会议)

会议地点: 成都

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）