Study on Static Characteristics and Parameter Patterns of Spherical Hybrid Sliding Bearings Based on a Roundness Tester_Vol. 4 No. 1 (JIEM 2026)_Journal of Industry and Engineering Management (ISSN: 2959-0612)

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Study on Static Characteristics and Parameter Patterns of Spherical Hybrid Sliding Bearings Based on a Roundness Tester

DOI: https://doi.org/10.62517/jiem.202603101

Author(s)

Siqi Li1, Yawen Fan2,*, Jingfeng Shen1,*

Affiliation(s)

1School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai, China 2School of Engineering and Computing, University of Shanghai for Science and Technology, Shanghai, China *Corresponding Author

Abstract

This paper presents a study on the static characteristics of spherical hybrid sliding bearings, which is a key structural component of a roundness tester. The influence of critical design parameters is analyzed to provide a theoretical basis for optimized design. A lubrication mathematical model based on spherical coordinates was established, and the Reynolds equation applicable to spherical bearings was derived. By incorporating the principle of flow conservation and a small-hole throttle model, the oil film pressure distribution was obtained using a coupled finite difference and relaxation iteration method. Based on the established lubrication model, the influence of oil supply pressure, eccentricity, throttle hole diameter, and oil film clearance on the bearing load-carrying capacity was systematically analyzed, and the corresponding underlying mechanisms were investigated. The analysis results indicate that an increase in oil supply pressure enhances the hydrostatic effect, thereby improving the bearing load-carrying capacity. An increase in eccentricity strengthens the hydrodynamic effect and leads to a significant improvement in load-bearing performance. In addition, the throttle hole diameter exhibits an optimal value that maximizes load-carrying capacity, which essentially reflects the matching relationship between throttling characteristics and return oil flow resistance. The proposed model and computational strategy offer effective support for parameter optimization and preliminary structural design of precision metrology bearings, contributing to improved measurement accuracy and reliability in advanced manufacturing.

Keywords

Spherical Hybrid Sliding Bearings; Orifice Restriction; Flow Continuity; Finite Difference Method; Conformal Transformation

References

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