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79183

ENHANCING THE TRIBOLOGICAL PROPERTIES OF BEARINGS IN MANIPULATORS

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Last updated: 25 Dec 2024

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Abstract

The present work aims to enhance the friction and wear resistance of the bearings and joints in manipulator. The effect of dispersing lubricating oil by silica nanoparticles as well as graphene oxide nanoplatelets as antiwear and friction modifiers was discussed. The performance of the proposed additives was compared to that observed by the conventional ones such as zinc dialkyldithiophosphate (ZDDP), molybdenum disulphide (MoS2), graphite (C) and detergent additive (calcium sulphonate).
 
The bearings of the manipulators are suffering from high friction coefficient due to the high load and the low surface velocity. In that condition, the contact between asperities is dominating so that friction and wear increase. It is necessary to separate the two surfaces and changes the lubrication regime into full-film lubrication.
 
The effect of dispersing lubricating oil by the tested additives to decrease friction coefficient and wear is experimentally investigated. It was found that oil free of additives displayed the lowest friction values followed by detergent additives due to the high polarity of their molecules. ZDDP, MoS2 and C displayed higher friction values.Graphene oxide nanoplatelets and silica nanoparticles were able to separate the sliding surface and consequently they decreased both friction coefficient and wear.It is recommended to disperse lubricating oil of bearing in manipulators by graphene oxide nanoplatelets and silica nanoparticles to reduce friction and wear.

DOI

10.21608/jest.2020.79183

Keywords

lubrication, bearings, Manipulators, Silica nanoparticles, graphene oxide

Authors

First Name

A. S.

Last Name

Ali

MiddleName

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Affiliation

Mechanical Power Engineering Dept., Faculty of Engineering, Suez Canal University, EGYPT.

Email

eng_ahmed_yossef@hotmail.com

City

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Orcid

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First Name

W. Y.

Last Name

Ali

MiddleName

-

Affiliation

Department of Production engineering and Mechanical Design, Faculty of Engineering, Minia University, El-Minia, EGYPT.

Email

-

City

-

Orcid

-

First Name

R. A.

Last Name

Ibrahem

MiddleName

-

Affiliation

Mechanical Engineering Dept., Faculty of Engineering, Beni-Suef University, Beni-Suef, EGYPT.

Email

-

City

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Orcid

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Volume

17

Article Issue

1

Related Issue

11782

Issue Date

2020-01-01

Receive Date

2019-10-12

Publish Date

2020-01-01

Page Start

62

Page End

72

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 17_Issue 1_Pages 62-72.pdf

PDF . 557.5kB

Link

https://jest.journals.ekb.eg/article_79183.html

Detail API

https://jest.journals.ekb.eg/service?article_code=79183

Order

7

Type

Original Article

Type Code

1,211

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Tribology

Publication Link

https://jest.journals.ekb.eg/

MainTitle

ENHANCING THE TRIBOLOGICAL PROPERTIES OF BEARINGS IN MANIPULATORS

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Article

Created At

22 Jan 2023