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An evaluation of grease type ball bearing lubricants operating in various environmentsGrease type lubricants in bearings were evaluated in five different adverse environments for a one year period. Four repetitions of each test were made to provide statistical samples. These tests were then used to select four lubricants for five year tests in selected environments with five repetitions of each test for statistical samples. Three five year tests were started in (1) continuous operation; (2) start-stop operation, with both in vacuum at ambient temperatures; and (3) continuous operation at 93.3 C. To date, in the one year tests, the best results in all environments were obtained with a high viscosity index perfluoroalkylpolyether grease.
Document ID
19790019344
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Mcmurtrey, E. L. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 3, 2013
Publication Date
July 1, 1979
Subject Category
Mechanical Engineering
Report/Patent Number
SR-4
NASA-TM-78232
Accession Number
79N27515
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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