Results 1 to 10 of about 590 (236)

Static Load Characteristics of Hydrostatic Journal Bearings: Measurements and Predictions [PDF]

Sensors, 2022
Hydrostatic bearings for liquid rocket engine turbopumps provide distinctive advantages, including high load capacity even with low viscosity cryogenic fluid and extending life span by minimizing friction and wear between rotor and bearing surfaces ...
Howon Yi, Hyunsung Jung, Kyuman Kim, Keun Ryu   +3 more
doaj   +4 more sources

The effect of recess number and conical shape on hydrostatic bearing power losses [PDF]

Scientific Reports
Axial loads on machinery are commonly carried by hydrostatic thrust bearings. To ensure sustained performance, designers need to balance the requirement for efficient pumping power with the high load-carrying capacity.
Marwa M. El-Sayed, Masoud Ibrahim, Ahmed. S. A. Abou Taleb   +2 more
doaj   +2 more sources

Evaluation and correction methods for geometric errors of hydrostatic thrust bearings [PDF]

Scientific Reports
The value and direction angle of the perpendicularity error of the thrust surface and bearing bush in hydrostatic thrust bearings directly affect the motion accuracy. In this paper, a rapid onsite measurement method and evaluation model for the value and
Zhiwei Wang, Bingqing Yang, Cong Xu, Penghao Fu, Yanhao Jia, Aiqin Sun, Lijun Zhang, Liang Yuan   +7 more
doaj   +2 more sources

CFD-Based Investigation on Effects of Orifice Length–Diameter Ratio for the Design of Hydrostatic Thrust Bearings

Applied Sciences, 2021
Orifice-restricted hydrostatic thrust bearings are broadly employed in ultra-precision machine tools, aerospace industries, and so forth. The orifice length–diameter ratio (OLDR) is one of the significant geometrical parameters of the orifice-restricted ...
Siyu Gao, Youyun Shang, Qiang Gao, Lihua Lu, Min Zhu, Yan Sun, Weifeng Yu   +6 more
doaj   +3 more sources

Analysis of the operation of a hydrostatic bearing in transition modes

Авіаційно-космічна техніка та технологія, 2022
The design of reliable rotor supports for modern high-speed machines is associated with the solution of many complex problems, both theoretical and experimental.
Volodymyr Nazin
doaj   +1 more source

Reliability of a Hydrostatic Bearing [PDF]

Journal of Tribology, 2013
This paper presents a methodology for evaluating the failure probability of fluid bearings, which are sensitive components for the design of machine rotors, mechatronic systems, and high precision metrology. The static and dynamic behavior of a fluid bearing depends on several parameters, such as external load, bearing dimensions, supply pressure ...
Charki, Abderafi, Diop, Khadim, Champmartin, Stéphane, Ambari, Abdelhak   +3 more
openaire   +3 more sources

Viscous Oil Film Thermal Modeling of Hydrostatic Bearings With a Rectangular Microgroove Surface

Frontiers in Energy Research, 2022
The thermal effect of the viscous oil film of hydrostatic bearings is the key factor causing bearing errors, and the hydrostatic bearing working surface with microgroove structures can potentially inhibit the thermal effect and effectively ensure the ...
Teng Liu, Teng Liu, Chentao Li, Runze Duan, Huiru Qu, Faze Chen, Zhenlin Zhou, Jianjun Zhang, Zhanqun Shi   +8 more
doaj   +1 more source

Investigation of the Static Performance of Hydrostatic Thrust Bearings Considering Non-Gaussian Surface Topography

Lubricants, 2023
The dynamic and static characteristics of hydrostatic thrust bearings are significantly affected by the bearing surface topography. Previous studies on hydrostatic thrust bearings have focused on Gaussian distribution models of bearing surface topography.
Huaiqing Lu, Zhuxin Tian
doaj   +1 more source

Design of a Hydrostatic Spindle and Its Simulation Analysis with the Application to a High Precision Internal Grinding Machine

Machines, 2022
Hydrostatic thrust bearings are the core part of the hydrostatic spindle, which is widely used in high precision grinding machines. In this paper, the viscosity-temperature (v-t) characteristics of hydrostatic oil are systematically investigated, which ...
Youyun Shang, Kai Cheng, Hui Ding, Shijin Chen   +3 more
doaj   +1 more source

Model-Based Design Approach to Improve Performance Characteristics of Hydrostatic Bearing Using Multivariable Optimization

Mathematics, 2021
Research in the field of tribo-mechatronics has been gaining popularity in recent decades. The objective of the current research is to improve static/dynamics characteristics of hydrostatic bearings.
Waheed Ur Rehman, Xinhua Wang, Yiqi Cheng, Yingchun Chen, Hasan Shahzad, Hui Chai, Kamil Abbas, Zia Ullah, Marya Kanwal   +8 more
doaj   +1 more source