Results 21 to 30 of about 222,963 (124)

Effects of Surface Roughness and Supply Inertia on Steady Performance of Hydrostatic Thrust Bearings Lubricated with Non-Newtonian Fluids

open access: yesJournal of Mechanical Engineering, 2021
The objective of present theoretical analysis is to study the combined effects of surface roughness and fluid inertia (including the inertia of the fluid in the supply region) on the steady performance of stepped circular hydrostatic thrust bearings ...
Singh Udaya P.
doaj   +1 more source

Kugel ball nature: hydrodynamics-mathematics-design

open access: yesApplications in Engineering Science, 2022
The Kugel fountain, where a sphere sits in a fitted socket fed by a thin film of pressurized water flowing between the sphere and the socket, was treated as a bearing without referring to any mathematical or practical evidence that can support this idea.
Ahmad W.Y. Elescandarany
doaj   +1 more source

Design and Optimization of the Surface Texture at the Hydrostatic Bearing and the Spindle for High Precision Machining

open access: yesMachines, 2022
Hydrostatic bearing spindles are widely applied in high precision grinding and turning machines due to their good dynamic stability and rotational accuracy.
Youyun Shang   +3 more
doaj   +1 more source

A Comparison of Design Methodologies for Journal Bearings under Pulsatile Loads [PDF]

open access: yes, 2011
The paper expands the work by Kinnear and Weston[1] on squeeze film bearing design to the general case and compares the revised methodology with classical bearing design[2,3,4] and hybrid bearing design[5].
Weston, W, Herapath, Colin, Barrans, S M
core   +5 more sources

UNIVERSAL STAND FOR STUDYING SEALING AND BEARING UNITS OF COMPRESSOR MACHINES [PDF]

open access: yesAvtomobilʹnyj Transport (Harʹkov), 2018
The proposed stand is designed to test sealing and bearing units of various types, because these units, regardless of their type, require almost the same auxiliary stand systems, as well as practically the same measurement system.
Pogrebnyak A.   +2 more
doaj   +1 more source

The Structural Optimum of Hydrostatic Thrust Bearings to Avoid Cavitation

open access: yesLubricants
Cavitation of oil film is harmful for all kinds of hydrostatic bearings, so the method to avoid cavitation in hydrostatic thrust bearings by optimizing the structure of bearings is proposed in this study. Based on the pressure distribution expressions of
Huaiqing Lu   +3 more
doaj   +1 more source

Development of rotary table grinding machine for large diameter Si wafers (2nd report: Performance investigation of wheel spindle designed to govern infeed motion)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Si wafer diameter tends to be increased from 300 mm to 450 mm in order to increase semiconductor device productivity. To this end, the authors developed a rotary grinding machine with high stiffness, equipped with water hydrostatic bearings.
Jumpei KUSUYAMA   +7 more
doaj   +1 more source

Influence of Bernoulli′s Speed-reduced Oil Cavities on the Friction Characteristics of Hydrostatic Bearings

open access: yesJournal of Harbin University of Science and Technology
In order to solve the problem of insufficient bearing capacity of hydrostatic thrust bearings at high speed, a pendulum shaped oil lifting structure is added in the double rectangular oil cavity and this paper takes the slope-shaped and the ordinary ...
YANG Xiaodong   +3 more
doaj   +1 more source

Experimental equipment for measuring physical properties of the annular hydrostatic thrust bearing

open access: yesEPJ Web of Conferences, 2014
The hydraulic circuit, through which the mineral oil is brought, is an important part of hydrostatic bearings. The annular hydrostatic thrust bearing consists of two sliding plates divided by a layer of mineral oil.
Kozdera Michal   +2 more
doaj   +1 more source

Multi-physics coupling effect on morphology evolution and lubrication characteristics of oil film in hydrostatic thrust bearing [PDF]

open access: yesAIP Advances
To address the issues of oil film morphology deviation from theoretical design models and lubrication failure in hydrostatic thrust bearings under high-speed and heavy-load conditions caused by temperature rise and structural deformation, this study ...
Xiaodong Yang   +5 more
doaj   +1 more source

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