1、b - MIL-G-25537C 91 7777906 0105501 4 = MIL-G-25537C 29 June 1984 SUPERSEDING, MIL-G-25537B 1 O Oc tober 1 972 MILITARY SPECIFICATION GREASE, AIRCRAFT, HELICOPTER OSCILLATING BEARING, NATO CODE NUMBER G-366, METRIC This Specification is approved for use by all Departments and Agencies of the Departm
2、ent of Defense. % 1. SCOPE 1.1 Scope. This specification covers the requirements for one grade of L grease for use in aircraft bearings having oscillatory motion of small amplitude. This grease is identified by NATO symbol G-366 (see 6.5). 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Spec
3、ifications, standards, and handbooks. Unless otherwise specified, the fol lowing specifications, standards, and handbooks of the issue listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) specified in the solicitation form a part of this specification to t
4、he extent specified herein. STAN DARDS FEDERAL o FED-STD-313 - Material Safety Data Sheets Preparation and Sub- FED-STD-7 9 1 - Lubricants, Liquid Fuels and Related Products, mission of. Methods of Testing. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may
5、be of use in improving this document should be addressed to: 931, Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. Engineering Specifications and Standards D
6、epartment (Code FSC 9150 THIS DOCUMENT CONTAINS -o- PAGES Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MI L-G-25537C STANDARDS (con t i nued 1 MI LI TARY MI L-STD- 105 MI L-STD-290 - Packaging, Packing and Marking of Petroleum and I Sampl ing Proc
7、edures and Tables for Inspection by Attributes. Related Products. 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publ ications for a part of this specification to the extent specified herein. PUB L I CAT I O NS CODE OF FEDERAL RE
8、GULATIONS 49 CFR - Transportation - Hazardous Materials. (Application for copies should be addressed to the Superint Documents, Government Pr i n ti ng Off i ce, Washi ngton , DC 20402. ) ndent of (Copies of specifications, standards, handbooks, drawings, and publ ications required by manufacturers
9、in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) 22 Other publications. The following documents form a part of this specification to the extent specified herein. The issues of the documents which are indica
10、ted as DoD adopted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) ANSI 2129.1 - American National Standard for the Precautionary Labeling of Hazardous Industrial Chemical s. (Application for copies should be add
11、ressed to the American National Standards Institute, 1430 Broadway, New York, NY 10018.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 217 - Cone Penetration of Lubricating Grease. ASTM D 942 - Oxidation Stability of Lubricating Greases by the Oxygen Bomb Method. ASTM D 1478 - Low-Tempera
12、ture Torque of Ball Bearing Greases. ASTM O 1743 - Corrosion Preventive Properties of Lubricating Greases. ASTM D 2265 - Dropping Point of Lubricating Grease Over Wide Temperature Range. ASTM D 2595 - Evaporation Loss of Lubricating Greases Over Wide Temperature Range. 2 4 c Provided by IHSNot for R
13、esaleNo reproduction or networking permitted without license from IHS-,-,- - .-.-a=.-. MIL-G-25537C 71 7777706 0305503 MIL-G-25537C AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) (continued) ASTM D 4048 - Detection of Copper Corrosion from Lubricating Grease by the Copper Strip Tarnish Test. ASTM
14、 D 4057 - Manual Sampling of Petroleum and Petroleum Products ASTM D 4177 - Automatic Sampling of Petroleum and Petroleum Products (Application for copies should be addressed to the American Society for (Industry association specifications and standards are generally available Testing and Materials,
15、 1916 Race Street, Philadelphia, PA 19103.) for reference from libraries. groups and using Federal agencies.) They are also distributed among technical 2.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specifi
16、cation shall take precedence. 3. REQUIREMENTS 3.1 Qualification. The grease furnished under this specification shall be products which are qualified for listing on the applicable qualified products list at the time set for opening of bids (see 4.3 and 6.3). 3.2 Material. The grease shall consist ess
17、entially of a low temperature liquid lubricant and a suitable gelling agent. subject greases of new or unusual composition, submitted for qualification, to such additional tests as are considered necessary to assure the serviceabi 1 i ty of the materials with military equipment. The right is reserve
18、d to 3.3 Physical properties. Physical properties of the grease shall be in accordance with Table I. 3.4 Material safety data sheets. Material safety data sheets shall be prepared and submitted in accordance with FED-STD-313. Material safety data sheets shall also be forwarded as specified in 4.3.2.
19、 The grease shall have no adverse effect on the health of personnel when used for its intended purpose. Questions pertinent to this effect shall be referred by the contracting activity to the appropriate departmental medical service who wi 11 act as an advisor to the contracting agency (see 4.3.2 an
20、d 6.2.le). 3.5 Workmanship. The grease shall be a homogeneous mixture, uniform in appearance, free from lumps, abrasive material or otherwise undesirable fillers or impurities. glass surface shall show no non-uniformity and shall, when spread with a straight edge, have a smooth surface. The grease,
21、while being worked with a spatula on a 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified
22、in the contract or purchase order, the contractor may use his own Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-25537C or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by
23、 the Government. Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure suppl ies and servi ces conform to prescribed requirements. The 4.2 Classification of inspection. The inspection requirements specifie
24、d herein are classified as follows: a. Qualification inspection (see 4.3). b. Quality conformance inspection (see 4.4). 4.3 Qualification inspection. Qualification inspection shall consist of a review of the manufacturers test report (see 4.3.2) to determine that the qualification inspection sample
25、(see 4.3.1) complies with all the requirements for the physical properties specified in Table I when tested in accordance with the inspection methods specified in Table II. 4.3.1 Qualification inspection sample. The qualification inspection sample shall consist of 5 kiloarams (10 Dounds) of qrease.
26、The sample shall be forwarded to the Aircraft aid Crew Syitems Technlogy Di rectorate Code 60612, Naval Air Development Center, Warminster, PA 18974. The sample shall be plainly identified by a securely attached durable tag or label marked with the following information: Sample for qualification ins
27、pection. GREASE, AIRCRAFT; HELICOPTER OSCILLATING BEARING, NATO CODE NUMBER Name of manufacturer. Product code number. Batch number, Date of manufacture. Submitted by (name) (date) for qualification inspection in accordance with MIL-G-25537C under authorization of (reference authorizing letter) (see
28、 6.3). G-366. 4.3.2 Test reports. Two copies of the manufacturers test report, containing complete test data showing that material submitted for qualification conforms to the requirements of this specification, shall be submitted with the qualification sample. which produced the sample tested shall
29、also be supplied. Material safety data sheets on toxicity shall be prepared as specified in 3.4 and shall be submitted to the qualifying laboratory (see 4.3.1). Location and identity of the plant 4.3.3 Retention of qualification. In order to retain qualification of a product approved for listing on
30、the Qualified Products List (QPL), the manufacturer shall verify by certification to the qualifying activity, that the manufacturers product complies with the requirements of this specification. two-year intervals from the date of original qualification. The Government reserves the right to re-exami
31、 ne the qual if i ed product whenever deemed necessary to determine that the product continues to meet any or all of the speci f i cat i on requ i remen ts . The time of periodic verification by certification shall be in Provided by IHSNot for ResaleNo reproduction or networking permitted without li
32、cense from IHS-,-,- - - MIL-G-25537C 91 m 9947906 0305505 II W MI L-G-25537C 4.4 Quality conformance inspection. The quality conformance inspection of the grease shall consist of tests of samples from 4.4.2.2 in accordance with table III and an examination of samplesfrom 4.4.2.1 for conformance with
33、 4.6.1. Samples shall be labeled completely with the information identifying the purpose of the sample, name of product, specification number, lot and batch number, date of sampling and contract number. 4.4.1 Lot formation. A lot shall consist of all the grease produced by one manufacturer, at one p
34、lant, from the same materials and under essentially the same conditions, provided the operation is continuous and does not exceed a 24 hour period. In the event the process is a batch operation, each batch shall constitute a lot (see 6.4). 4.4.2 Sampling. * 4.4.2.1 For examination of filled containe
35、rs. containers, fully DreDared for delivery, shall be random sample of filled grease in accordance with MIL-STD-105,“ inspection level II with an acceptable quality level (AQL) of 2.5 percent defective. 4.4.2.2 For tests. The sample for tests shall consist of two 2 kilogram obtain grease in large co
36、ntainers, two 2 kilogram in accordance with ASTM D 4057 or ASTM D 4177. The lot f either sample fails to comply with any of the tests -. . 1 cted from each lot of * at random from filled containers from each lot of samples of grease take grease. For users who samples shall be taken shall be unaccept
37、able specified in 4.6.2. 4.5 Inspection conditions. 4.5.1 Test conditions. Test conditions shal and the physical values specified in Table I am determinatins made on the sample. shall be conducted on unworked grease. Unless otherw 4.6 Methods of examinations and tests. A be in accordance with 4.6 y
38、to the average of se specified, all tests 4.6.1 Examinations. Each of the filled containers, selected in accordance with 4.4.2.1, shall be examined for defects of the container and closure, for evidence of leakage and for unsatisfactory markings to determine conformance with 5.1. determine the amoun
39、t of contents. If the number of defective containers exceeds the acceptance number of the sampling plan specified in 4,4.2.1, the lot shall be rejected. Each sample container shall also be weighed to 4.6.2 Tests. Tests shall be performed in accordance with Table II to determine conformance with the
40、requirements specified in 3.3. 5. PACKAGING 5.1 Packaging, packing and marking. The grease shall be packaged, packed and marked in accordance with MIL-STD-290. The type and size of the containers and the level of packaging and packing shall be asspecified by the acquiring activity (see 6.2.1). 5 Pro
41、vided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-25537C 5.1.1 Marking. All unit, intermediate and shipping containers shall marked in accordance with MIL-STD-290 and Title 49 of the Code of Federal be Regulations and any other additional special ma
42、rkings specified by the acquiring activity (see 6.2.lf). All unit and intermediate packs of to i and hazardous chemicals and materials shall also be labeled in accordance w th the applicable laws, statutes, regulations or ordinances, including Federal State, and Municipal requirements. In addition,
43、unit and intermediate containers, including unit containers that serve as shipping containers as pails and drums, shall be marked with the applicable precautionary information detailed in ANSI 1129.1. such 6. NOTES 6.1 Intended use. The grease is intended for use in bearings having oscillatory motio
44、n of small amplitude over the temperature range of 71C to -54OC* 6.2 Ordering data. 6.2.1 Acquisition requirements. Acquisition documents should specify the fol lowing: a. b. C. d. e, f. Title, number and date of this specification. Quantity desired. Size and type of container for grease (see 5.1).
45、Applicable levels of packaging and packing and other options (see 5.1). Specify DAR Clauses 7-104.98 and 1-323.2. Any special markings required (see 5.1.1). aw bi 6.3 Qualification. With respect to products requiring qualification, ds may be made only for products which are, at the time set for open
46、in , qualified for inclusion in Qualified Products List (QPL-25537) whether f or not such products have actually been so listed by that date. The attention of the contractors is called to these requirements, and manufacturers are urged to arrange to have the products that they propose to offer to th
47、e Federal Government tested for qualification in order that they may be eligible to be awarded contracts or purchase orders for the products covered by this specification. Commander, Naval Air Systems Command, Attn: AIR-5304C1, Washi ngton, DC 20361; however information pertaining to qualification o
48、f products and letter of authorization for submittal of sample may be obtained from the Aircraft and Crew Systems Technology Directorate, Code 60612, Naval Air Development Center, Warmi ns ter, PA 18974. The activity responsible for the Qualified Products List is 6.3.1 Qualification information. It
49、is understood that the grease furnished under this specification subsequent to final approval should be of the same composition and shall be equal to products upon which approval was originally granted. In the event that the grease furnished under contract is found to deviate from the composition of the approved product, or that the 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-G-2553
