Tribo-Characteristics of Self-Lubricating Ball Bearings for the LE-7 Liquid Hydrogen Rocket-Turbopump
The tribo characteristics of self-lubricating 40-mm-bore ball bearings with a retainer of glass cloth-polytetrafluoroelhylene (PTFE) laminate, which has elliptical pockets with a large pocket clearance, were tested under thrust loads at speeds up to 50000 rpm, 2 million DN, in liquid hydrogen (LH 2...
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| Veröffentlicht in: | Tribology transactions 1993, Vol.36 (3), p.432-442 |
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| creator | Nosaka, Masataka Oike, Mamoru Kikuchi, Masataka Kamijo, Kenjiro Tajiri, Masanori |
| description | The tribo characteristics of self-lubricating 40-mm-bore ball bearings with a retainer of glass cloth-polytetrafluoroelhylene (PTFE) laminate, which has elliptical pockets with a large pocket clearance, were tested under thrust loads at speeds up to 50000 rpm, 2 million DN, in liquid hydrogen (LH
2
) and in liquid nitrogen (LN
2
). During testing, the bearing torque, outer-race temperature, and electric resistance between the inner and outer races were monitored to verify the formation and rupture of a PTFE transfer film. Testing showed that the bearings having the elliptical retainer pockets were superior to the conventional bearings with circular pockets. It was determined that at the maximum inner race spinning velocity of about 5 mls a PTFE transfer film could sustain the maximum Hertz stress, up to about 2000 N/mm
2
, in LH
2
, without severe film rupture resulting in bearing seizure. In LN
2
, the critical load capacity of PTFE transfer film with bearing seizure was about 2700 N/mm
2
.
Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in San Diego, California, October 19-21, 1992 |
| doi_str_mv | 10.1080/10402009308983181 |
| format | Article |
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2
) and in liquid nitrogen (LN
2
). During testing, the bearing torque, outer-race temperature, and electric resistance between the inner and outer races were monitored to verify the formation and rupture of a PTFE transfer film. Testing showed that the bearings having the elliptical retainer pockets were superior to the conventional bearings with circular pockets. It was determined that at the maximum inner race spinning velocity of about 5 mls a PTFE transfer film could sustain the maximum Hertz stress, up to about 2000 N/mm
2
, in LH
2
, without severe film rupture resulting in bearing seizure. In LN
2
, the critical load capacity of PTFE transfer film with bearing seizure was about 2700 N/mm
2
.
Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in San Diego, California, October 19-21, 1992</description><identifier>ISSN: 1040-2004</identifier><identifier>EISSN: 1547-397X</identifier><identifier>DOI: 10.1080/10402009308983181</identifier><language>eng</language><publisher>Colchester: Taylor & Francis Group</publisher><subject>320303 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes ; 420200 - Engineering- Facilities, Equipment, & Techniques ; Applied sciences ; BALL BEARINGS ; BEARINGS ; Bearings, bushings, rolling bearings ; Cryogenic ; Drives ; ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ; ENGINEERING ; ENGINES ; Exact sciences and technology ; FLUORINATED ALIPHATIC HYDROCARBONS ; FRICTION FACTOR ; Friction, wear, lubrication ; GLASS ; HALOGENATED ALIPHATIC HYDROCARBONS ; HYDRAULIC TURBINES ; Liquid Hydrogen ; LUBRICANTS ; Machine components ; MACHINERY ; Mechanical engineering. Machine design ; ORGANIC COMPOUNDS ; ORGANIC FLUORINE COMPOUNDS ; ORGANIC HALOGEN COMPOUNDS ; ORGANIC POLYMERS ; POLYETHYLENES ; POLYMERS ; POLYOLEFINS ; POLYTETRAFLUOROETHYLENE ; PTFE ; PUMP TURBINES ; ROCKET ENGINES ; Rocket-Turbopump ; Self-Lubricating Ball Bearing ; TORQUE ; TRIBOLOGY ; TURBINES ; TURBOMACHINERY</subject><ispartof>Tribology transactions, 1993, Vol.36 (3), p.432-442</ispartof><rights>Copyright Taylor & Francis Group, LLC 1993</rights><rights>1994 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c418t-475bd0d91e4df5e6fb95a98ccd540a526db361dbbd5374aad5546b5c22d39b493</citedby><cites>FETCH-LOGICAL-c418t-475bd0d91e4df5e6fb95a98ccd540a526db361dbbd5374aad5546b5c22d39b493</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.tandfonline.com/doi/pdf/10.1080/10402009308983181$$EPDF$$P50$$Ginformaworld$$H</linktopdf><linktohtml>$$Uhttps://www.tandfonline.com/doi/full/10.1080/10402009308983181$$EHTML$$P50$$Ginformaworld$$H</linktohtml><link.rule.ids>230,309,310,314,776,780,785,786,881,4010,4036,4037,23909,23910,25118,27900,27901,27902,59620,60409</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=3808947$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.osti.gov/biblio/5733689$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Nosaka, Masataka</creatorcontrib><creatorcontrib>Oike, Mamoru</creatorcontrib><creatorcontrib>Kikuchi, Masataka</creatorcontrib><creatorcontrib>Kamijo, Kenjiro</creatorcontrib><creatorcontrib>Tajiri, Masanori</creatorcontrib><title>Tribo-Characteristics of Self-Lubricating Ball Bearings for the LE-7 Liquid Hydrogen Rocket-Turbopump</title><title>Tribology transactions</title><description>The tribo characteristics of self-lubricating 40-mm-bore ball bearings with a retainer of glass cloth-polytetrafluoroelhylene (PTFE) laminate, which has elliptical pockets with a large pocket clearance, were tested under thrust loads at speeds up to 50000 rpm, 2 million DN, in liquid hydrogen (LH
2
) and in liquid nitrogen (LN
2
). During testing, the bearing torque, outer-race temperature, and electric resistance between the inner and outer races were monitored to verify the formation and rupture of a PTFE transfer film. Testing showed that the bearings having the elliptical retainer pockets were superior to the conventional bearings with circular pockets. It was determined that at the maximum inner race spinning velocity of about 5 mls a PTFE transfer film could sustain the maximum Hertz stress, up to about 2000 N/mm
2
, in LH
2
, without severe film rupture resulting in bearing seizure. In LN
2
, the critical load capacity of PTFE transfer film with bearing seizure was about 2700 N/mm
2
.
Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in San Diego, California, October 19-21, 1992</description><subject>320303 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes</subject><subject>420200 - Engineering- Facilities, Equipment, & Techniques</subject><subject>Applied sciences</subject><subject>BALL BEARINGS</subject><subject>BEARINGS</subject><subject>Bearings, bushings, rolling bearings</subject><subject>Cryogenic</subject><subject>Drives</subject><subject>ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION</subject><subject>ENGINEERING</subject><subject>ENGINES</subject><subject>Exact sciences and technology</subject><subject>FLUORINATED ALIPHATIC HYDROCARBONS</subject><subject>FRICTION FACTOR</subject><subject>Friction, wear, lubrication</subject><subject>GLASS</subject><subject>HALOGENATED ALIPHATIC HYDROCARBONS</subject><subject>HYDRAULIC TURBINES</subject><subject>Liquid Hydrogen</subject><subject>LUBRICANTS</subject><subject>Machine components</subject><subject>MACHINERY</subject><subject>Mechanical engineering. Machine design</subject><subject>ORGANIC COMPOUNDS</subject><subject>ORGANIC FLUORINE COMPOUNDS</subject><subject>ORGANIC HALOGEN COMPOUNDS</subject><subject>ORGANIC POLYMERS</subject><subject>POLYETHYLENES</subject><subject>POLYMERS</subject><subject>POLYOLEFINS</subject><subject>POLYTETRAFLUOROETHYLENE</subject><subject>PTFE</subject><subject>PUMP TURBINES</subject><subject>ROCKET ENGINES</subject><subject>Rocket-Turbopump</subject><subject>Self-Lubricating Ball Bearing</subject><subject>TORQUE</subject><subject>TRIBOLOGY</subject><subject>TURBINES</subject><subject>TURBOMACHINERY</subject><issn>1040-2004</issn><issn>1547-397X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><recordid>eNp1kE1LAzEQhhdRsFZ_gLcgXqPJJtkP8GJLtcKCoBW8LfnaNrrdrEkW6b83ZdWLeMqEeZ4Z5k2Sc4yuMCrQNUYUpQiVBBVlQXCBD5IJZjSHpMxfD2Md-zAC9Dg58f4NIcwwJpNEr5wRFs433HEZtDM-GOmBbcCzbhtYDcIZyYPp1mDG2xbMNHfx40FjHQgbDaoFzEFlPgajwHKnnF3rDjxZ-a4DXA1O2H7Y9qfJUcNbr8--32nycrdYzZewerx_mN9WUFJcBEhzJhRSJdZUNUxnjSgZLwspFaOIszRTgmRYCaEYySnnijGaCSbTVJFS0JJMk4txro1n1F6aoOVG2q7TMtQsJyQr9hAeIems9043de_MlrtdjVG9D7P-E2Z0Lken517ytnG8k8b_iqSIJM0jdjNipov5bPmnda2qA9-11v045P8tX23nhqU</recordid><startdate>1993</startdate><enddate>1993</enddate><creator>Nosaka, Masataka</creator><creator>Oike, Mamoru</creator><creator>Kikuchi, Masataka</creator><creator>Kamijo, Kenjiro</creator><creator>Tajiri, Masanori</creator><general>Taylor & Francis Group</general><general>Taylor & Francis</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>1993</creationdate><title>Tribo-Characteristics of Self-Lubricating Ball Bearings for the LE-7 Liquid Hydrogen Rocket-Turbopump</title><author>Nosaka, Masataka ; Oike, Mamoru ; Kikuchi, Masataka ; Kamijo, Kenjiro ; Tajiri, Masanori</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c418t-475bd0d91e4df5e6fb95a98ccd540a526db361dbbd5374aad5546b5c22d39b493</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>320303 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes</topic><topic>420200 - Engineering- Facilities, Equipment, & Techniques</topic><topic>Applied sciences</topic><topic>BALL BEARINGS</topic><topic>BEARINGS</topic><topic>Bearings, bushings, rolling bearings</topic><topic>Cryogenic</topic><topic>Drives</topic><topic>ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION</topic><topic>ENGINEERING</topic><topic>ENGINES</topic><topic>Exact sciences and technology</topic><topic>FLUORINATED ALIPHATIC HYDROCARBONS</topic><topic>FRICTION FACTOR</topic><topic>Friction, wear, lubrication</topic><topic>GLASS</topic><topic>HALOGENATED ALIPHATIC HYDROCARBONS</topic><topic>HYDRAULIC TURBINES</topic><topic>Liquid Hydrogen</topic><topic>LUBRICANTS</topic><topic>Machine components</topic><topic>MACHINERY</topic><topic>Mechanical engineering. Machine design</topic><topic>ORGANIC COMPOUNDS</topic><topic>ORGANIC FLUORINE COMPOUNDS</topic><topic>ORGANIC HALOGEN COMPOUNDS</topic><topic>ORGANIC POLYMERS</topic><topic>POLYETHYLENES</topic><topic>POLYMERS</topic><topic>POLYOLEFINS</topic><topic>POLYTETRAFLUOROETHYLENE</topic><topic>PTFE</topic><topic>PUMP TURBINES</topic><topic>ROCKET ENGINES</topic><topic>Rocket-Turbopump</topic><topic>Self-Lubricating Ball Bearing</topic><topic>TORQUE</topic><topic>TRIBOLOGY</topic><topic>TURBINES</topic><topic>TURBOMACHINERY</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nosaka, Masataka</creatorcontrib><creatorcontrib>Oike, Mamoru</creatorcontrib><creatorcontrib>Kikuchi, Masataka</creatorcontrib><creatorcontrib>Kamijo, Kenjiro</creatorcontrib><creatorcontrib>Tajiri, Masanori</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Tribology transactions</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Nosaka, Masataka</au><au>Oike, Mamoru</au><au>Kikuchi, Masataka</au><au>Kamijo, Kenjiro</au><au>Tajiri, Masanori</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Tribo-Characteristics of Self-Lubricating Ball Bearings for the LE-7 Liquid Hydrogen Rocket-Turbopump</atitle><jtitle>Tribology transactions</jtitle><date>1993</date><risdate>1993</risdate><volume>36</volume><issue>3</issue><spage>432</spage><epage>442</epage><pages>432-442</pages><issn>1040-2004</issn><eissn>1547-397X</eissn><abstract>The tribo characteristics of self-lubricating 40-mm-bore ball bearings with a retainer of glass cloth-polytetrafluoroelhylene (PTFE) laminate, which has elliptical pockets with a large pocket clearance, were tested under thrust loads at speeds up to 50000 rpm, 2 million DN, in liquid hydrogen (LH
2
) and in liquid nitrogen (LN
2
). During testing, the bearing torque, outer-race temperature, and electric resistance between the inner and outer races were monitored to verify the formation and rupture of a PTFE transfer film. Testing showed that the bearings having the elliptical retainer pockets were superior to the conventional bearings with circular pockets. It was determined that at the maximum inner race spinning velocity of about 5 mls a PTFE transfer film could sustain the maximum Hertz stress, up to about 2000 N/mm
2
, in LH
2
, without severe film rupture resulting in bearing seizure. In LN
2
, the critical load capacity of PTFE transfer film with bearing seizure was about 2700 N/mm
2
.
Presented as a Society of Tribologists and Lubrication Engineers paper at the ASME/STLE Tribology Conference in San Diego, California, October 19-21, 1992</abstract><cop>Colchester</cop><pub>Taylor & Francis Group</pub><doi>10.1080/10402009308983181</doi><tpages>11</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1040-2004 |
| ispartof | Tribology transactions, 1993, Vol.36 (3), p.432-442 |
| issn | 1040-2004 1547-397X |
| language | eng |
| recordid | cdi_pascalfrancis_primary_3808947 |
| source | Taylor & Francis:Master (3349 titles) |
| subjects | 320303 - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes 420200 - Engineering- Facilities, Equipment, & Techniques Applied sciences BALL BEARINGS BEARINGS Bearings, bushings, rolling bearings Cryogenic Drives ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION ENGINEERING ENGINES Exact sciences and technology FLUORINATED ALIPHATIC HYDROCARBONS FRICTION FACTOR Friction, wear, lubrication GLASS HALOGENATED ALIPHATIC HYDROCARBONS HYDRAULIC TURBINES Liquid Hydrogen LUBRICANTS Machine components MACHINERY Mechanical engineering. Machine design ORGANIC COMPOUNDS ORGANIC FLUORINE COMPOUNDS ORGANIC HALOGEN COMPOUNDS ORGANIC POLYMERS POLYETHYLENES POLYMERS POLYOLEFINS POLYTETRAFLUOROETHYLENE PTFE PUMP TURBINES ROCKET ENGINES Rocket-Turbopump Self-Lubricating Ball Bearing TORQUE TRIBOLOGY TURBINES TURBOMACHINERY |
| title | Tribo-Characteristics of Self-Lubricating Ball Bearings for the LE-7 Liquid Hydrogen Rocket-Turbopump |
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