Impact of grease churning on grease leakage, oil bleeding and grease rheology

K.R. Sathwik Chatra; Jude A. Osara; Piet M. Lugt

doi:10.1016/j.triboint.2022.107926

Impact of grease churning on grease leakage, oil bleeding and grease rheology

K.R. Sathwik Chatra^*, Jude A. Osara, Piet M. Lugt

^*Corresponding author for this work

Surface Technology and Tribology

Research output: Contribution to journal › Article › Academic › peer-review

20 Citations (Scopus)

189 Downloads (Pure)

Abstract

Grease performance is strongly determined by the properties and quantity of the grease after the churning phase in which grease reservoirs are formed. During this churning phase, macroscopic flow takes place, leading to drag forces dissipating energy in the grease, generating heat and causing thermo-mechanical degradation. The impact of grease churning on grease properties such as oil bleed, leakage and rheology was studied using bearing experiments and a roll stability tester. Grease leakage increased whereas oil bleeding capacity and tackiness decreased with increased churning intensity, measured as temperature-corrected energy density.

Original language	English
Article number	107926
Journal	Tribology international
Volume	176
DOIs	https://doi.org/10.1016/j.triboint.2022.107926
Publication status	Published - Dec 2022

Keywords

Churning
Grease leakage
Oil bleeding
Rheology
Rolling element bearing
UT-Hybrid-D

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.triboint.2022.107926Licence: CC BY

ArticleFinal published version, 3.12 MBLicence: CC BY

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title = "Impact of grease churning on grease leakage, oil bleeding and grease rheology",

abstract = "Grease performance is strongly determined by the properties and quantity of the grease after the churning phase in which grease reservoirs are formed. During this churning phase, macroscopic flow takes place, leading to drag forces dissipating energy in the grease, generating heat and causing thermo-mechanical degradation. The impact of grease churning on grease properties such as oil bleed, leakage and rheology was studied using bearing experiments and a roll stability tester. Grease leakage increased whereas oil bleeding capacity and tackiness decreased with increased churning intensity, measured as temperature-corrected energy density.",

keywords = "Churning, Grease leakage, Oil bleeding, Rheology, Rolling element bearing, UT-Hybrid-D",

author = "Chatra, {K.R. Sathwik} and Osara, {Jude A.} and Lugt, {Piet M.}",

note = "Funding Information: This research was executed at SKF Research and Technology Development, Houten, The Netherlands and at the SKF University Technology Centre for Grease Lubrication at the University of Twente, The Netherlands. July, 6th, 2022. As corresponding author, I Sathwik Chatra Kalsanka Ramakrishna, hereby confirm on behalf of all authors that:, 1) The paper has not been published previously, that it is not under consideration for publication elsewhere, and that if accepted it will not be published elsewhere in the same form, in English or in any other language, without the written consent of the publisher. 2) The paper does not contain material which has been published previously, by the current authors or by others, of which the source is not explicitly cited in the paper. Yours Sincerely, Sathwik Chatra Kalsanka Ramakrishna. Publisher Copyright: {\textcopyright} 2022 The Authors",

year = "2022",

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doi = "10.1016/j.triboint.2022.107926",

language = "English",

volume = "176",

journal = "Tribology international",

issn = "0301-679X",

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TY - JOUR

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AU - Chatra, K.R. Sathwik

AU - Osara, Jude A.

AU - Lugt, Piet M.

N1 - Funding Information: This research was executed at SKF Research and Technology Development, Houten, The Netherlands and at the SKF University Technology Centre for Grease Lubrication at the University of Twente, The Netherlands. July, 6th, 2022. As corresponding author, I Sathwik Chatra Kalsanka Ramakrishna, hereby confirm on behalf of all authors that:, 1) The paper has not been published previously, that it is not under consideration for publication elsewhere, and that if accepted it will not be published elsewhere in the same form, in English or in any other language, without the written consent of the publisher. 2) The paper does not contain material which has been published previously, by the current authors or by others, of which the source is not explicitly cited in the paper. Yours Sincerely, Sathwik Chatra Kalsanka Ramakrishna. Publisher Copyright: © 2022 The Authors

PY - 2022/12

Y1 - 2022/12

N2 - Grease performance is strongly determined by the properties and quantity of the grease after the churning phase in which grease reservoirs are formed. During this churning phase, macroscopic flow takes place, leading to drag forces dissipating energy in the grease, generating heat and causing thermo-mechanical degradation. The impact of grease churning on grease properties such as oil bleed, leakage and rheology was studied using bearing experiments and a roll stability tester. Grease leakage increased whereas oil bleeding capacity and tackiness decreased with increased churning intensity, measured as temperature-corrected energy density.

AB - Grease performance is strongly determined by the properties and quantity of the grease after the churning phase in which grease reservoirs are formed. During this churning phase, macroscopic flow takes place, leading to drag forces dissipating energy in the grease, generating heat and causing thermo-mechanical degradation. The impact of grease churning on grease properties such as oil bleed, leakage and rheology was studied using bearing experiments and a roll stability tester. Grease leakage increased whereas oil bleeding capacity and tackiness decreased with increased churning intensity, measured as temperature-corrected energy density.

KW - Churning

KW - Grease leakage

KW - Oil bleeding

KW - Rheology

KW - Rolling element bearing

KW - UT-Hybrid-D

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VL - 176

JO - Tribology international

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ER -

Impact of grease churning on grease leakage, oil bleeding and grease rheology

Abstract

Keywords

UN SDGs

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