Results 1 to 10 of about 385,083 (311)

Cage stability of ball bearings under variable working conditions

open access: yes工程科学学报, 2019
The momentum wheel is a key device used for orbiting satellite attitude control. Its controlling accuracy is strongly influenced by the cage stability of the ball bearings in momentum wheels.
Zhi-qiang ZHANG   +4 more
doaj   +1 more source

Monitoring of lubricant film failure in a ball bearing using ultrasound [PDF]

open access: yes, 2006
A lubricant-film monitoring system for a conventional deep groove ball bearing (type 6016, shaft diameter 80 mm, ball diameter 12.7 mm) is described. A high-firequency (50 MHz) ultrasonic transducer is mounted on the static outer raceway of the bearing ...
Anderson   +21 more
core   +1 more source

Effect of the Lubrication Parameters on the Ceramic Ball Bearing Vibration in Starved Conditions

open access: yesApplied Sciences, 2020
The thickness of the oil film in ceramic ball bearings varies greatly at starved lubrication conditions, thus leading to non-uniform contact between the balls and raceways in the circumference.
Ke Zhang   +5 more
doaj   +1 more source

Numerical simulation of ball bearing flow field using the moving particle semi-implicit method

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
The distribution of lubricating oil in the bearing cavity is of great significance to bearing lubrication and cooling. A new idea is provided to further study the ball bearings lubrication, to achieve effective lubrication of bearings.
Wei Wu, Chunhui Wei, Shihua Yuan
doaj   +1 more source

Bearing transmits rotary and axial motion [PDF]

open access: yes, 1964
A low friction, two-component bearing comprised of a pair of ball-bearing races for transmitting rotary motion and an inner series of ball bearing assemblies for transmitting axial motion is described and should be useful in mechanisms such as stress ...
Dow, N. F., Peters, R. W.
core   +1 more source

A Study on Wear and Friction of Passenger Vehicles Control Arm Ball Joints

open access: yesEnergies, 2021
The following paper describes research on vehicle suspension elements: the ball joints. The worn surface roughness of selected ball pins and their bearings was compared in terms of vehicle mileage, utilization period, and car model.
Marek Wozniak   +3 more
doaj   +1 more source

Ball bearing versus magnetic bearing reaction and momentum wheels as momentum actuators [PDF]

open access: yes, 1980
Different bearing technologies of momentum actuators for the attitude control of satellites are compared and a guideline for the selection of the suitable momentum actuators or momentum actuator configurations to meet given mission goals with high ...
Auer, W.
core   +1 more source

A Dynamic Analysis of a Flexible Rotor in Ball Bearings with Nonlinear Stiffness Characteristics

open access: yesInternational Journal of Rotating Machinery, 1997
This paper presents an effective analysis approach for a flexible rotor in ball bearings with nonlinear stiffness characteristics to obtain realistic dynamic behavior results.
Dong-Soo Lee, Dong-Hoon Choi
doaj   +1 more source

CHARACTERISTIC STUDY FOR THE HETEROGENEOUS ROLLING BEARING MATCH WAY

open access: yesJixie qiangdu, 2015
When angular contact ball bearings match together,due to high demand of manufacturing and installation precision,only increasing the number of angular contact ball bearings to increase the radial bearing capacity has great limitations.Therefore,it was ...
WU KaiSong, DENG Tao, CAI Can, FENG Yan
doaj  

Thermal–Mechanical Coupling Model of a Double-Piece Inner Ring Ball Bearing Based on ADAMS Secondary Development

open access: yesLubricants
The double-piece inner ring ball bearing is an important part of an aero-engine. An excessive bearing temperature leads to bearing thermal expansion, lubricating oil performance degradation, and other problems that seriously affect the service life and ...
Yujun Xue   +3 more
doaj   +1 more source

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