Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance

We newly developed the prototype calcium complex grease (Cx-S) which delivered a better temperature performance than traditional calcium complex greases and could keep its structure even over 200°C. This was achieved by combining the common calcium complex thickener technology with a new con...

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Autores principales:	Kazuya Watanabe, Keiji Tanaka
Formato:	article
Lenguaje:	EN
Publicado:	Japanese Society of Tribologists 2016
Materias:	calcium complex grease heat resistance oxidation stability leakage bearing life behenic acid Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/35927fa236cf4ffc9f0fb059edc6751e
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spelling	oai:doaj.org-article:35927fa236cf4ffc9f0fb059edc6751e2021-11-05T09:21:12ZStudy into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance1881-219810.2474/trol.11.639https://doaj.org/article/35927fa236cf4ffc9f0fb059edc6751e2016-09-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/trol/11/5/11_639/_pdf/-char/enhttps://doaj.org/toc/1881-2198We newly developed the prototype calcium complex grease (Cx-S) which delivered a better temperature performance than traditional calcium complex greases and could keep its structure even over 200°C. This was achieved by combining the common calcium complex thickener technology with a new concept. In this report, the bearing life of several grease types was evaluated by ASTM D 1741. It was demonstrated that the bearing life of Cx-S wasn’t as long as urea grease, although it had excellent anti-oxidation performance. Additionally, leakage rate was calculated by the amounts of leaked grease from bearings during the test. Therefore, it was suggested that a physical factor such as shear stability of the grease is likely to cause shorter bearing life. Then, by using behenic acid instead of stearic acid - to improve shear stability of Cx-S - it was found that behenic type calcium complex grease (Cx-B) forms much thicker and stronger fiber micelles than stearic type (Cx-S). As a result, the shear stability of Cx-B was strongly improved and bearing life was extended by 50% compared to Cx-S.Kazuya WatanabeKeiji TanakaJapanese Society of Tribologistsarticlecalcium complex greaseheat resistanceoxidation stabilityleakagebearing lifebehenic acidPhysicsQC1-999Engineering (General). Civil engineering (General)TA1-2040Mechanical engineering and machineryTJ1-1570ChemistryQD1-999ENTribology Online, Vol 11, Iss 5, Pp 639-645 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	calcium complex grease heat resistance oxidation stability leakage bearing life behenic acid Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999
spellingShingle	calcium complex grease heat resistance oxidation stability leakage bearing life behenic acid Physics QC1-999 Engineering (General). Civil engineering (General) TA1-2040 Mechanical engineering and machinery TJ1-1570 Chemistry QD1-999 Kazuya Watanabe Keiji Tanaka Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance
description	We newly developed the prototype calcium complex grease (Cx-S) which delivered a better temperature performance than traditional calcium complex greases and could keep its structure even over 200°C. This was achieved by combining the common calcium complex thickener technology with a new concept. In this report, the bearing life of several grease types was evaluated by ASTM D 1741. It was demonstrated that the bearing life of Cx-S wasn’t as long as urea grease, although it had excellent anti-oxidation performance. Additionally, leakage rate was calculated by the amounts of leaked grease from bearings during the test. Therefore, it was suggested that a physical factor such as shear stability of the grease is likely to cause shorter bearing life. Then, by using behenic acid instead of stearic acid - to improve shear stability of Cx-S - it was found that behenic type calcium complex grease (Cx-B) forms much thicker and stronger fiber micelles than stearic type (Cx-S). As a result, the shear stability of Cx-B was strongly improved and bearing life was extended by 50% compared to Cx-S.
format	article
author	Kazuya Watanabe Keiji Tanaka
author_facet	Kazuya Watanabe Keiji Tanaka
author_sort	Kazuya Watanabe
title	Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance
title_short	Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance
title_full	Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance
title_fullStr	Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance
title_full_unstemmed	Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance
title_sort	study into structural impact of novel calcium complex grease delivering high temperature performance
publisher	Japanese Society of Tribologists
publishDate	2016
url	https://doaj.org/article/35927fa236cf4ffc9f0fb059edc6751e
work_keys_str_mv	AT kazuyawatanabe studyintostructuralimpactofnovelcalciumcomplexgreasedeliveringhightemperatureperformance AT keijitanaka studyintostructuralimpactofnovelcalciumcomplexgreasedeliveringhightemperatureperformance
_version_	1718444401828560896

Study into Structural Impact of Novel Calcium Complex Grease Delivering High Temperature Performance

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