Investigation of film thickness of grease-lubricated thrust bearing: From ball-on-disc to bearing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU134738" target="_blank" >RIV/00216305:26210/19:PU134738 - isvavai.cz</a>

Výsledek na webu

<a href="https://pesjournal.net/paper.php?id=72" target="_blank" >https://pesjournal.net/paper.php?id=72</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.24874/PES01.01.072" target="_blank" >10.24874/PES01.01.072</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Investigation of film thickness of grease-lubricated thrust bearing: From ball-on-disc to bearing

Popis výsledku v původním jazyce

Rolling element bearings lubricated by greases represent the most used mechanical components in industry, thus the total volume of energy required to overcome their friction is enormous. Even small improvements can provide considerable savings. To reach these improvements, it is necessary to understand all the processes in the bearing, and especially those that take place in contacts of rolling elements. So far, most of the research was done on tribometers employing a ball-on-disc configuration. Tests on such devices are easy to perform but differ from conditions of actual bearings in some important aspects such as a contact geometry, presence of cage, number of contacts, spin motion of rolling elements, or action of centrifugal and capillary forces. The aim of this experimental study is to refer about film thickness during the initial running phase of simulated thrust rolling bearing and to reveal some patterns of lubricant behaviour for different conditions and greases. Measurements were carried out on unique apparatus of simulated thrust rolling bearing using optical methods with high speed camera. Results showed that the ball-on-disc configuration does not completely correspond to behaviour of actual bearings, mostly in terms of starvation and replenishment of grease. Multiple contacts in succession of simulated bearing do not tend to starve so rapidly and seriously during experiments as is presented in literature for ball-on-disc configuration under similar conditions.

Název v anglickém jazyce

Investigation of film thickness of grease-lubricated thrust bearing: From ball-on-disc to bearing

Popis výsledku anglicky

Rolling element bearings lubricated by greases represent the most used mechanical components in industry, thus the total volume of energy required to overcome their friction is enormous. Even small improvements can provide considerable savings. To reach these improvements, it is necessary to understand all the processes in the bearing, and especially those that take place in contacts of rolling elements. So far, most of the research was done on tribometers employing a ball-on-disc configuration. Tests on such devices are easy to perform but differ from conditions of actual bearings in some important aspects such as a contact geometry, presence of cage, number of contacts, spin motion of rolling elements, or action of centrifugal and capillary forces. The aim of this experimental study is to refer about film thickness during the initial running phase of simulated thrust rolling bearing and to reveal some patterns of lubricant behaviour for different conditions and greases. Measurements were carried out on unique apparatus of simulated thrust rolling bearing using optical methods with high speed camera. Results showed that the ball-on-disc configuration does not completely correspond to behaviour of actual bearings, mostly in terms of starvation and replenishment of grease. Multiple contacts in succession of simulated bearing do not tend to starve so rapidly and seriously during experiments as is presented in literature for ball-on-disc configuration under similar conditions.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings on Engineering Sciences

ISBN

—

ISSN

2620-2832

e-ISSN

—

Počet stran výsledku

5

Strana od-do

550-554

Název nakladatele

University of Kragujevac, Faculty of Engineering

Místo vydání

Kragujevac, Serbia

Místo konání akce

Kragujevac

Datum konání akce

15. 5. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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