Experimental Study of the Effect of Thickener on the Film Thickness in the Contacts of a Grease-Lubricated Ball Bearing at Low Speed

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU154896" target="_blank" >RIV/00216305:26210/24:PU154896 - isvavai.cz</a>

Result on the web

<a href="https://www.tandfonline.com/journals/utrb20/about-this-journal#advertising-information" target="_blank" >https://www.tandfonline.com/journals/utrb20/about-this-journal#advertising-information</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/10402004.2024.2431523" target="_blank" >10.1080/10402004.2024.2431523</a>

Result language

angličtina

Original language name

Experimental Study of the Effect of Thickener on the Film Thickness in the Contacts of a Grease-Lubricated Ball Bearing at Low Speed

Original language description

The level of starvation in axially loaded grease lubricated ball bearings can be well described by the product of the base oil viscosity, the half contact width and the rotational speed (gbu). This paper highlights the effect of the thickener as another parameter for estimating the film thickness in a ball bearing. Film thickness measurements were done with an optical simulator of the ballon- disc configuration and a real ball bearing using the capacitance method. Three greases with the same base oil but different thickener types were selected for the experiments. Two greases followed the gbu model but the grease with alicyclic di-urea thickener produced a higher thickness than the model prediction, which is most likely caused by the formation of residual layers on the contact surfaces. The layer formation occurs in the first few hours of operation reaching a thickness of about 500–550 nm. Other greases also form layers, but they are comparable to prior observations, and they follow the model. The evolution of the normalized film thickness versus gbu in the case of alicyclic-di urea grease shows the same trend as the other grease types but with overall higher values.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20301 - Mechanical engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

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

Name of the periodical

Tribology Transactions

ISSN

0569-8197

e-ISSN

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Volume of the periodical

neuveden

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

1-11

UT code for WoS article

001376574600001

EID of the result in the Scopus database

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