Abstract

In this paper, the radial movements of the pressed cages of deep groove single row radial ball bearings were examined by the optical locus of cage center, and the relations between the amplitude of the movements of center and the various conditions with some lubricants were derived.Then the following conclusions were drawn : (1) Under the usual lubricating conditions, the forces acted impulsively between the balls and the cage with the rise in revolution. Therefore, the recorded figure became of ruggedness. Especially it has been observed that the movements of cages were influenced by the vibration of balls in the direction of cage rotation on the shaft speed of 40005000 rpm.(2) The viscosity of lubricants, or their temperature characteristics, affected very much to the amplitude of cage center.(3) Under the thrust load, the radial movements of the cage center were very small.

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