NOT MEASUREMENT
SENSITIVE
MIL-DTL-53131A
16 November 1998
SUPERSEDING
MIL-L-53131
10 February 1993
DETAIL SPECIFICATION
LUBRICATING OIL, PRECISION ROLLING ELEMENT BEARING,
POLYALPHAOLEFIN BASED
This specification is approved for use by all Departments and Agencies of the Department of Defense.
1. SCOPE
1.1 Scope. This detail specification covers the requirements for five grades of a synthetic hydrocarbon
lubricating oil for use in the precision bearings of internal guidance gyros, accelerometers and other
suitable instrument bearing applications (see 6.1).
1.2 Classification. The lubricating oils are of the following grades as specified (see 6.2).
Grade 4
Grade 6
Grade 9
Grade 14
Grade 40
2. APPLICABLE DOCUMENTS
2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification.
This section does not include documents cited in other sections of this specification or recommended for
additional information or as examples. While every effort has been made to ensure the completeness of
this list, document users are cautioned that they must meet all specified requirements documents cited in
section 3 and 4 of this specification, whether or not they are listed.
Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use
in improving this document should be addressed to: U.S. Tank-Automotive and Armaments Command,
ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-500, by using the Standardization Document
Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
AMSC N/A
FSC 9150
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.
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