Effects of Grease Characteristics on Sound and Vibration of a Linear-Guideway Type Recirculating Ball Bearing

Hiroyuki Ohta; Tatsuya Tsuruoka; Yukitoshi Fujinami; Soichiro Kato

doi:10.1115/1.4031437

Journal of Tribology | Volume 138 | Issue 2 | research-article

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Research Papers: Applications

Effects of Grease Characteristics on Sound and Vibration of a Linear-Guideway Type Recirculating Ball Bearing

Hiroyuki Ohta, Tatsuya Tsuruoka, Yukitoshi Fujinami and Soichiro Kato

[+] Author and Article Information

Hiroyuki Ohta

Department of Mechanical Engineering,
Nagaoka University of Technology,
Graduate School of Engineering,
1603-1 Kamitomioka,
Nagaoka, Niigata 940-2188, Japan
e-mail: ohta@mech.nagaokaut.ac.jp

Tatsuya Tsuruoka

Department of Mechanical Engineering,
Graduate School of Engineering,
Nagaoka University of Technology,
1603-1 Kamitomioka,
Nagaoka, Niigata 940-2188, Japan

Yukitoshi Fujinami

Lubricants Research Laboratory,
Idemitsu Kosan Co., Ltd.,
24-4 Anesakikaigan,
Ichihara, Chiba 299-0107, Japan

Soichiro Kato

LG Technology Department,
Linear Technology Center,
NSK Ltd.,
12 Kirihara,
Fujisawa, Kanagawa 252-0811, Japan

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received May 31, 2015; final manuscript received August 20, 2015; published online October 15, 2015. Assoc. Editor: Ning Ren.

J. Tribol 138(2), 021101 (Oct 15, 2015) (8 pages) Paper No: TRIB-15-1176; doi: 10.1115/1.4031437 History: Received May 31, 2015; Revised August 20, 2015

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Abstract

This paper deals with the effects of grease characteristics on sound and vibration of a linear-guideway type ball bearing. First, sound, vibration, and temperature of a linear-guideway type ball bearing were measured by changing 16 types of greases. Next, in order to explain the effects of grease characteristics (absolute viscosity η₀ of the base oil in the grease at atmospheric pressure, pressure–viscosity coefficient ξ of the base oil, and penetration P of grease) and linear velocity V on the sound pressure p and vibratory acceleration a of the linear bearing, dimensional analyses were carried out. The dimensional analyses derived dimensionless products Pp/(η₀V) and η₀ξV/P for the sound, and dimensionless products Pa/V² and η₀ξV/P for the vibration. The plot of the measured data using dimensionless products showed that both sound pressure p and vibratory acceleration a (under a certain linear velocity) decreased as the absolute viscosity η₀ of the base oil in the grease at atmospheric pressure or the pressure–viscosity coefficient ξ increased. Whereas the sound pressure p decreased as the penetration P decreased, the vibratory acceleration a decreased as P increased.

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Fig. 1

Test bearing

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Fig. 2

Drive unit

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Fig. 3

Measurement apparatus

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Fig. 4

Measured L_p and L_a versus η₀

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Fig. 5

Sound and vibration time waveforms (V = 1.0 m/s)

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Fig. 6

Sound and vibration spectra (V = 1.0 m/s)

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Fig. 7

Plot of dimensionless products (Pp/η₀V) and (η₀ξV/P)

Plot of dimensionless products (Pp/η0 V) and (η0ξV/P)

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Fig. 8

Plot of dimensionless products (Pa/V²) and (η₀ξV/P)

Plot of dimensionless products (Pa/V2) and (η0ξV/P)

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Ohta H, Tsuruoka T, Fujinami Y, Kato S. Effects of Grease Characteristics on Sound and Vibration of a Linear-Guideway Type Recirculating Ball Bearing. ASME. J. Tribol. 2015;138(2):021101-021101-8. doi:10.1115/1.4031437.

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Effects of Grease Characteristics on Sound and Vibration of a Linear-Guideway Type Recirculating Ball Bearing

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