scholarly journals Spalling Localization on the Outer Ring of Hybrid Ceramic Ball Bearings Based on the Sound Signals

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 134621-134634 ◽  
Author(s):  
H. T. Shi ◽  
X. T. Bai ◽  
K. Zhang ◽  
Z. N. Wang ◽  
Z. M. Liu
Keyword(s):  
Outer Ring ◽  
Ball Bearings ◽  
Ceramic Ball ◽  
Hybrid Ceramic

Vibrations of the All-Ceramic Ball Bearing

2002 ◽  
Vol 124 (3) ◽  
pp. 448-460 ◽  
Author(s):  
Hiroyuki Ohta ◽  
Shinya Satake
Keyword(s):  
Natural Vibration ◽  
Ball Bearing ◽  
Axial Direction ◽  
Outer Ring ◽  
Ball Bearings ◽  
Ceramic Ball ◽  
Vibration Spectra ◽  
All Ceramic ◽  
Hybrid Ceramic ◽  
Mass Type

All-ceramic ball bearings with silicone nitride balls and silicone nitride rings were tested and the vibration characteristics were compared with those of hybrid ceramic ball bearings and conventional steel ball bearings. The vibration measurement results showed that the overall vibratory velocity levels of the all-ceramic ball bearings are influenced by rotational velocities, and do not change with axial loads. Under a given axial load and rotational velocity, the overall vibratory velocity level of the all-ceramic ball bearing is the lowest, and the hybrid ball bearing the highest. The frequencies of main peaks in the measured vibration spectra of the all-ceramic ball bearing are higher than the frequencies of the corresponding main peaks for the hybrid ceramic ball bearing and the steel ball bearing. To explain the main peaks, modal analysis was done and the relationship between peak and natural vibration was analyzed. The results of the analyses showed that the main peaks are caused by: (1) the mass-type natural vibration of the outer ring in the vertical direction, (2) the bending natural vibration of the outer ring in the radial direction, (3) the moment of inertia-type natural vibration of the outer ring in the angular direction, (4) the mass-type natural vibration of the outer ring in the axial direction, and (5) the bending natural vibration of the outer ring in the axial direction. We also discuss the generating mechanism of the vibration and present the calculation method of the vibration spectra. As a result, it is clear that the vibration spectra of the all-ceramic ball bearing are determined by the amplitude of the waviness of the raceways and ball surface, the mobility, and the non-linear spring constant associated with the contact between the raceways and balls.

scholarly journals Improvement of Durability of Hybrid Ceramic Ball Bearings in Liquid Hydrogen at 3 Million DN (120,000 rpm)

2010 ◽  
Vol 5 (1) ◽  
pp. 60-70 ◽  
Author(s):  
Masataka Nosaka ◽  
Satoshi Takada ◽  
Makoto Yoshida ◽  
Masataka Kikuchi ◽  
Takayuki Sudo ◽  
...  
Keyword(s):  
Liquid Hydrogen ◽  
Ball Bearings ◽  
Ceramic Ball ◽  
Hybrid Ceramic

Fatigue Behavior of Hybrid Ceramic Ball Bearings in Liquid Nitrogen

2003 ◽  
Vol 46 (4) ◽  
pp. 494-498 ◽  
Author(s):  
L. Gu ◽  
L. Wang ◽  
Y. Jin ◽  
X. Li
Keyword(s):  
Liquid Nitrogen ◽  
Fatigue Behavior ◽  
Ball Bearings ◽  
Ceramic Ball ◽  
Hybrid Ceramic

scholarly journals A Theoretical Model with the Effect of Cracks in the Local Spalling of Full Ceramic Ball Bearings

2019 ◽  
Vol 9 (19) ◽  
pp. 4142 ◽  
Author(s):  
Huaitao Shi ◽  
Zimeng Liu ◽  
Xiaotian Bai ◽  
Yupeng Li ◽  
Yuhou Wu
Keyword(s):  
Theoretical Model ◽  
Theoretical Basis ◽  
Vibration Amplitude ◽  
Strain Energy ◽  
Outer Ring ◽  
Ball Bearings ◽  
State Monitoring ◽  
Ceramic Ball ◽  
Ceramic Bearing ◽  
Bearing Stiffness

For full ceramic ball bearings, cracks occur frequently in the spalling on the rings, which leads to impacts on the bearing dynamic characteristics. In this paper, the spalling is set on the outer ring, and the dynamic model considering the effect of crack is proposed. The crack is considered to be related to the strain energy, and the effect on the stiffness of the outer ring is also analyzed. Results show that the appearance of cracks leads to the reduction of the full ceramic bearing stiffness, and the vibration amplitude of bearing increases. The effect of a crack depends on its size, and the vibration of the bearing with cracks of different widths and depths vary greatly. This study provides theoretical basis for the calculation of full ceramic bearing and is of great significance for the state monitoring and fault diagnosis.

Tribo-Characteristics of Cryogenic Hybrid Ceramic Ball Bearings for Rocket Turbopumps: Self-Lubricating Performance©

1997 ◽  
Vol 40 (1) ◽  
pp. 21-30 ◽  
Author(s):  
Masataka Nosaka ◽  
Mamoru Oike ◽  
Masataka Kikuchi ◽  
Tohru Mayumi
Keyword(s):  
Ball Bearings ◽  
Ceramic Ball ◽  
Hybrid Ceramic

Hybrid Ceramic Ball Bearings for Turbochargers

2000 ◽  
Author(s):  
Kiyoshi Tanimoto ◽  
Kazuhisa Kajihara ◽  
Kunio Yanai
Keyword(s):  
Ball Bearings ◽  
Ceramic Ball ◽  
Hybrid Ceramic

Tribo-Characteristics of Cryogenic Hybrid Ceramic Ball Bearings for Rocket Turbopumps: Bearing Wear and Transfer Film©

1999 ◽  
Vol 42 (1) ◽  
pp. 106-115 ◽  
Author(s):  
Masataka Nosaka ◽  
Masataka Kikuchi ◽  
Mamoru Oike ◽  
Nobuyuki Kawai
Keyword(s):  
Transfer Film ◽  
Ball Bearings ◽  
Ceramic Ball ◽  
Hybrid Ceramic
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