Cage vibration behaviors of high-speed cylindrical roller bearings

ZHANG Wenhu1,HU Yusheng2,DENG Sier1,XU Jia2,HU Yongle1

Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (22) : 85-94.

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PDF(3091 KB)
Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (22) : 85-94.

Cage vibration behaviors of high-speed cylindrical roller bearings

  • ZHANG Wenhu1,HU Yusheng2,DENG Sier1,XU Jia2,HU Yongle1
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Abstract

Based on the dynamic theory of rolling bearings, the dynamic differential equations of high-speed cylindrical roller bearings were established and solved by the Gear stiff(GSTIFF) integral algorithm with variable step. Then, the impact of structural parameters and operating conditions on cage’s vibration behaviors was focused. The results show that: the cage’s vibration acceleration in radial plane decreases with the increase of radial load. The amplitudes of fc, 2fc, 3fc components in vibration spectrum decrease with the increase of radial load, and the amplitudes of 5fc and higher frequency components significantly reduce or even disappear. The effect of radial load on the amplitude of 4fc component is more complicated. With the increase of rotation speed, the cage’s vibration in radial plane increases. With the increase of radial clearance, the cage’s vibration in radial plane increases rapidly and then slowly increases. Too large or too small guide land clearance or pocket circumference clearance will raise the cage’s vibration and there is an optimal range for guide land clearance and pocket circumference clearance to reduce the cage’s vibration effectively.

Key words

 High speed cylindrical roller bearing / Dynamics / Cage / Vibration behavior / Vibration acceleration

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ZHANG Wenhu1,HU Yusheng2,DENG Sier1,XU Jia2,HU Yongle1. Cage vibration behaviors of high-speed cylindrical roller bearings[J]. Journal of Vibration and Shock, 2019, 38(22): 85-94

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