Lubricant replacement in rolling element bearings for weapon surety devices

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Stronglink switches are a weapon surety device that is critical to the nuclear safety theme in modem nuclear weapons. These stronglink switches use rolling element bearings which contain a lubricant consisting of low molecular weight polytetrafluoroethylene (PTFE) fragments. Ozone-depleting solvents are used in both the manufacture and application of this lubricant. An alternate bearing lubrication for stronglink switches is needed that will provide long-term chemical stability, low migration and consistent performance. Candidates that were evaluated include bearings with sputtered MoS{sub 2} on the races and retainers, bearings with TiC-coated balls, and bearings with Si{sub 3}N{sub 4} balls and steel races. … continued below

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7 p.

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Steinhoff, R.; Dugger, M.T. & Varga, K.S. May 1, 1996.

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This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 40 times. More information about this article can be viewed below.

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  • Allied-Signal Aerospace Company
    Publisher Info: Allied-Signal Aerospace Co., Kansas City, MO (United States). Kansas City Div.
    Place of Publication: Kansas City, Missouri

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Stronglink switches are a weapon surety device that is critical to the nuclear safety theme in modem nuclear weapons. These stronglink switches use rolling element bearings which contain a lubricant consisting of low molecular weight polytetrafluoroethylene (PTFE) fragments. Ozone-depleting solvents are used in both the manufacture and application of this lubricant. An alternate bearing lubrication for stronglink switches is needed that will provide long-term chemical stability, low migration and consistent performance. Candidates that were evaluated include bearings with sputtered MoS{sub 2} on the races and retainers, bearings with TiC-coated balls, and bearings with Si{sub 3}N{sub 4} balls and steel races. These candidates were compared to the lubricants currently used which are bearings lubricated with PTFE fragments of low molecular weight in a fluorocarbon solvent. The candidates were also compared to bearings lubricated with a diester oil which is representative of bearing lubricants used in industrial applications. Evaluation consisted of cycling preloaded bearings and subjecting them to 23 gRMS random vibration. All of the candidates are viable substitutes for low load application where bearing preload is approximately 1 pound. For high load applications where the bearing preload is approximately 10 pounds, bearings with sputtered MoS{sub 2} on the races and retainers appear to be the best substitutes. Bearings with TiC-coated balls also appear to be a viable candidate but these bearings did not perform as well as the sputtered MoS{sub 2}.

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7 p.

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OSTI as DE96011210

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  • 20. compatibility, aging and stockpile stewardship conference, Kansas City, MO (United States), 30 Apr - 2 May 1996

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  • Other: DE96011210
  • Report No.: KCP--613-5771
  • Report No.: CONF-9604125--6
  • Grant Number: AC04-76DP00613
  • Office of Scientific & Technical Information Report Number: 243491
  • Archival Resource Key: ark:/67531/metadc671644

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  • May 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 20, 2017, 3:06 p.m.

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Steinhoff, R.; Dugger, M.T. & Varga, K.S. Lubricant replacement in rolling element bearings for weapon surety devices, article, May 1, 1996; Kansas City, Missouri. (https://digital.library.unt.edu/ark:/67531/metadc671644/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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