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Article

Performance Investigation of the Micro-Hole High-Speed Aerostatic Thrust Bearing Based on the Finite Element Method

by
Siyu Gao
1,2,
Tianle Jiang
1,
Zhuang Li
1,
Hongbin Yang
1,
Min Zhu
3,*,
Youyun Shang
1,
Laiyun Song
4,*,
Lihua Lu
1,
Qiang Gao
1 and
Hanqian Zhang
5
1
School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
2
Chongqing Research Institute of HIT, Chongqing 401121, China
3
School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China
4
Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
5
Guangzhou Haozhi Industrial Co., Ltd., Guangzhou 511356, China
*
Authors to whom correspondence should be addressed.
Machines 2025, 13(6), 477; https://doi.org/10.3390/machines13060477
Submission received: 26 April 2025 / Revised: 28 May 2025 / Accepted: 30 May 2025 / Published: 1 June 2025
(This article belongs to the Special Issue Design and Analysis of Air Bearings with Applications in the Design of High-Precision Machines)
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Abstract

Micro-hole aerostatic bearings have emerged as critical components in ultra-precision machining systems, offering a superior load capacity, stiffness, and stability compared to traditional orifice-based designs. These enhancements are primarily attributed to the high-density configurations of micro-holes and the reduction in hole diameter. However, research on the design and analysis of micro-hole aerostatic bearings for high-rotational-speed applications remains limited. In this study, the finite element method (FEM) was employed to solve the Reynolds equation, thereby conducting a systematic evaluation of the static and high-speed performance characteristics of micro-hole aerostatic thrust bearings. The effects of restrictor types, micro-hole layouts, structural parameters, and centrifugal deformation under high-rotational-speed conditions on bearing performance have been comprehensively examined. The objective of this study is to provide a basis for the design of micro-hole high-speed aerostatic spindles.
Keywords: aerostatic bearing; high rotational speed; micro-hole restrictor; pneumatic resistance; centrifugal expansion aerostatic bearing; high rotational speed; micro-hole restrictor; pneumatic resistance; centrifugal expansion

Share and Cite

MDPI and ACS Style

Gao, S.; Jiang, T.; Li, Z.; Yang, H.; Zhu, M.; Shang, Y.; Song, L.; Lu, L.; Gao, Q.; Zhang, H. Performance Investigation of the Micro-Hole High-Speed Aerostatic Thrust Bearing Based on the Finite Element Method. Machines 2025, 13, 477. https://doi.org/10.3390/machines13060477

AMA Style

Gao S, Jiang T, Li Z, Yang H, Zhu M, Shang Y, Song L, Lu L, Gao Q, Zhang H. Performance Investigation of the Micro-Hole High-Speed Aerostatic Thrust Bearing Based on the Finite Element Method. Machines. 2025; 13(6):477. https://doi.org/10.3390/machines13060477

Chicago/Turabian Style

Gao, Siyu, Tianle Jiang, Zhuang Li, Hongbin Yang, Min Zhu, Youyun Shang, Laiyun Song, Lihua Lu, Qiang Gao, and Hanqian Zhang. 2025. "Performance Investigation of the Micro-Hole High-Speed Aerostatic Thrust Bearing Based on the Finite Element Method" Machines 13, no. 6: 477. https://doi.org/10.3390/machines13060477

APA Style

Gao, S., Jiang, T., Li, Z., Yang, H., Zhu, M., Shang, Y., Song, L., Lu, L., Gao, Q., & Zhang, H. (2025). Performance Investigation of the Micro-Hole High-Speed Aerostatic Thrust Bearing Based on the Finite Element Method. Machines, 13(6), 477. https://doi.org/10.3390/machines13060477

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