針状ころ軸受の回転特性

概要

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Skewing of needle rollers and it's influences on rotating characteristics of the needle bearing are investigated theoretically and experimentally, and the results obtained are summarized as follows. (1) There are two states of skew angle θ. For θ<θ_1,rollers can rotate normally, and θ of each roller is not allways constant. When θ exceeds θ_1,θ increases rapidly up to θ_2,and the pressure between rollers and friction moment increases extreamely. As the inner-race contacts nearer the roller-end, θ becomes to this state more easily. (2) Circumferential clearance C.C. and diametrical clearance D.C. have not any direct relations to θ for θ<θ_1. But, to extend operating condition free from extreme temperature rise and failure of the bearing, it is profitable to make C.C. small and θ_<D.C.max> larger than θ_<C.C.max.> Where, θ_<D.C.max> and θ_<C.C.max> are max. skew angles calculated for D.C. and C.C. respectively. (3) It is presumed that rollers having long effective length and large end diameter are profitable. (4) The thrust force is induced by skewing of rollers and linearly proportional to the bearing load.
一般社団法人日本機械学会の論文
1959-10-25