Studies on the Vibration and Sound of Defective Rolling Bearings : Second Report : Sound of Ball Bearings with One Defect

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概要

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• An investigation was undertaken with a view to establishing a procedure for diagnosing defects in rolling bearings from their vibration and sound. In the present investigation the sound of a rolling bearing with one dent in the race surface of the inner or outer ring or in the ball surface was studied. When the inner ring was rotated at a constant speed under a given thrust load applied to the outer ring, the sound occurring in three directions, i.e., radial, 45° and frontal was measured by a condenser microphone. Using the output so obtained, sound waveforms were observed, real time frequency analysis of the sound was done using Fast Fourier Transform analyzer, and the microphone position effects on the sound, etc. were examined. As a result, the fundamental characteristics of the sound of ball bearings having one dent were clarified, and a method by which to locate the defect and determine its size was established.

• 一般社団法人日本機械学会の論文

著者

• Igarashi Teruo

  Technological University Of Nagaoka

• YABE Shiroji

  Nippon Seiko K.K.

関連論文

• Studies on the Sound and Vibration of a Gearbox : 1st Report, Effect of Gear Errors on Sound
• Studies on Impact Sound : First Report, The Sound Generated by a Ball Colliding with a Plate
• Studies on Impact Sound : Second Report, Mechanism of Sound Generation
• Studies on the Vibration and Sound of Defective Rolling Bearings : Second Report : Sound of Ball Bearings with One Defect
• Studies on Vibration and Sound of Defective Rolling Bearings : Third Report, Vibration of Ball Bearing with Multiple Defects
• Studies on the Vibration and Sound of Defective Rolling Bearings : First Report : Vibration of Ball Bearings with One Defect

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