Analysis of Vibration Caused by Ball Bearing in a HDD Spindle System at Elevated Temperature

This research investigates the vibration caused by ball bearing in a HDD spindle system, specifically non-repeatable runout (NRRO), at elevated temperature by analyzing the characteristics of ball bearing and the natural vibration characteristics of the spindle system due to the effect of elevated temperature. It shows that the elevated temperature results in the decrease of bearing deformation in the spindle system, which reduces the bearing stiffness and the natural frequencies of the spindle system consequently. It has a significant effect on the amplitude and the frequency distribution of NRRO at elevated temperature.

Download Full-text

MC-35 IMPROVEMENT OF DYNAMIC CHARACTERISTICS OF A HDD SPINDLE SYSTEM SUPPORTED BY BALL BEARING DUE TO TEMPERATURE VARIATION

Proceedings of JSME-IIP/ASME-ISPS Joint Conference on Micromechatronics for Information and Precision Equipment IIP/ISPS joint MIPE ◽

10.1299/jsmemipe.2003.217 ◽

2003 ◽

Vol 2003 (0) ◽

pp. 217-218

Author(s):

G. H. JANG ◽

D. K. KIM ◽

C. S. KIM ◽

H. S. LEE

Keyword(s):

Temperature Variation ◽

Dynamic Characteristics ◽

Ball Bearing ◽

Spindle System

Download Full-text

Wear analysis of angular contact ball bearing in multiple-bearing spindle system subjected to uncertain initial angular misalignment

Journal of Tribology ◽

10.1115/1.4049258 ◽

2020 ◽

pp. 1-32

Author(s):

Zhongchi Yang ◽

Yu Zhang ◽

Ke Zhang ◽

Songhua Li

Keyword(s):

Ball Bearing ◽

Spindle Speed ◽

Wear Depth ◽

Ball Bearings ◽

Wear Model ◽

Angular Misalignment ◽

Angular Contact Ball Bearing ◽

Spindle System ◽

Dispersion Degree ◽

Spinning Speed

Abstract The effects of the uncertainty of angular misalignment on the wear of angular contact ball bearings in the spindle system are investigated. The wear model of bearing raceways is derived based on Archard model. The angular misalignment caused by mounting error is assumed to comply with normal distribution, Monte Carlo method is used to extract angular misalignment sample. Based on the spindle system model, the spinning speed, pitch angle and contact force of ball elements in each angular contact ball bearing are calculated. The wear depth of bearing raceways is analyzed. The results show that the uncertainty of the initial angular misalignment leads to significant dispersion of wear depth of ball bearings, but the dispersion degree is related to spindle speed, angular misalignment cases, and bearing mounting position. Increasing the spindle speed increases the wear depth but decreases the wear depth dispersion.

Download Full-text