This paper deals with vibrations and acoustic emissions (AEs) of linear-guideway type recirculating ball bearings with a millimeter-sized artificial defect in the carriage. The vibration and AE of one normal bearing without a defect (Type N), and six defective bearings (Types D1–D6) were measured using a linear velocity of 1 m/s. The defects in the bearings range from 1.87 mm to 6.77 mm in length, 2.45 mm to 3.80 mm in width, and to in depth. The experimental results show that the pulse amplitudes of the vibrations and AE (both the peak-to-peak and RMS values) of the defective bearings have a tendency to be greater than those of the normal bearing. Both the measured vibration and AE components over 30 kHz increased in the carriages with defects. To explain these increases in the defective bearings, a collision model with balls and one defect in the carriage is presented. That collision model shows that the increases in both the vibrations and AE of the defective bearings are caused by increases in the defect angle. A reasonable correlation exists between the presented collision model and the measured vibrations or AE of the defective bearings.
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January 2010
Research Papers
Vibration and Acoustic Emission of Linear-Guideway Type Recirculating Ball Bearings With a Millimeter-Sized Artificial Defect in the Carriage
Hiroyuki Ohta,
Hiroyuki Ohta
Department of Mechanical Engineering,
e-mail: ohta@mech.nagaokaut.ac.jp
Nagaoka University of Technology
, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Kazuya Matsuura,
Kazuya Matsuura
Department of Mechanical Engineering, Graduate School,
Nagaoka University of Technology
, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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Soichiro Kato,
Soichiro Kato
LG Technology Department,
NSK Precision Co. Ltd.
, 78 Toriba, Maebashi, Gunma 371-8527, Japan
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Yutaka Igarashi
Yutaka Igarashi
Research Department,
NSK Precision Co. Ltd.
, 78 Toriba, Maebashi, Gunma 371-8527, Japan
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Hiroyuki Ohta
Department of Mechanical Engineering,
Nagaoka University of Technology
, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japane-mail: ohta@mech.nagaokaut.ac.jp
Kazuya Matsuura
Department of Mechanical Engineering, Graduate School,
Nagaoka University of Technology
, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
Soichiro Kato
LG Technology Department,
NSK Precision Co. Ltd.
, 78 Toriba, Maebashi, Gunma 371-8527, Japan
Yutaka Igarashi
Research Department,
NSK Precision Co. Ltd.
, 78 Toriba, Maebashi, Gunma 371-8527, JapanJ. Tribol. Jan 2010, 132(1): 011101 (6 pages)
Published Online: November 9, 2009
Article history
Received:
November 23, 2008
Revised:
August 31, 2009
Online:
November 9, 2009
Published:
November 9, 2009
Citation
Ohta, H., Matsuura, K., Kato, S., and Igarashi, Y. (November 9, 2009). "Vibration and Acoustic Emission of Linear-Guideway Type Recirculating Ball Bearings With a Millimeter-Sized Artificial Defect in the Carriage." ASME. J. Tribol. January 2010; 132(1): 011101. https://doi.org/10.1115/1.4000271
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