1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 12924:2010Lubricants, industrial oils andrelated products (Class L) Family X (Greases) SpecificationBS ISO 12924:2010Incorporating corrigendum June 2012BS ISO 12924:2010 B
2、RITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12924:2010.The UK participation in its preparation was entrusted to TechnicalCommittee PTI/7, Lubricants and process fluids.A list of organizations represented on this committee can beobtained on request to its sec
3、retary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011 ISBN 978 0 580 64197 8 ICS 75.100 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publi
4、shed under the authority of theStandards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationDate Text affectedBS ISO 12924:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12924:2010.The UK participation in its preparation was
5、entrusted to TechnicalCommittee PTI/7, Lubricants and process fluids.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplicati
6、on. BSI 2011 ISBN 978 0 580 64197 8ICS 75.100 Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationDate Text affectedBS
7、ISO 12924:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 12924:2010.The UK participation in its preparation was entrusted to TechnicalCommittee PTI/7, Lubricants and process fluids.A list of organizations represen ed on this committee can beobtained on re
8、quest to its secre ary.This publication does not pu po t to include all the necessaryprov sions of a contract. Use s a e responsible for its correctappl cation. BSI 2011 ISBN 978 0 580 64197 8 ICS 75.100 Compliance with a British Standard cannot confer immunity from legal obligations.This British St
9、and r was published und r the authority of theStandards Policy n Strategy Committe on 30 June 2011.Amendments issued since publicationDate Text affectedi I :incorporating corrigendum June 2012.The British Standards Institution 2012. Published by BSIStandards Limited 201279648 7/corrigenda issued sin
10、ce publicationDate Text af ected31 July 2012 Implementation of ISO corrigendum June 2012:Table 3 replacedBS ISO 12924:2010Reference numberISO 12924:2010(E)ISO 2010INTERNATIONAL STANDARD ISO12924First edition2010-05-01Lubricants, industrial oils and related products (Class L) Family X (Greases) Speci
11、fication Lubrifiants, huiles industrielles et produits connexes (classe L) Famille X (Graisses) Spcifications BS ISO 12924:2010ISO 12924:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not b
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14、er bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or b
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16、ail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 12924:2010ISO 12924:2010(E) ISO 2010 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies)
17、. The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non
18、-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part
19、 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting
20、a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 12924 was prepared by Technical Committee ISO/TC 28, Petroleum products and lubricants, S
21、ubcommittee SC 4, Classifications and specifications. BS ISO 12924:2010BS ISO 12924:2010INTERNATIONAL STANDARD ISO 12924:2010(E) ISO 2010 All rights reserved 1Lubricants, industrial oils and related products (Class L) Family X (Greases) Specification 1 Scope This International Standard specifies the
22、 requirements of greases used for the lubrication of equipment, components of machines, vehicles, etc. The purpose of this International Standard is to provide guidance to suppliers and end users of greases and to equipment manufacturers of grease-lubricated equipment. This International Standard is
23、 written in a general form so that its application can accommodate various climatic conditions throughout the world. It also stipulates the requirements for the lubricating grease at the time of the delivery. The classification of family X (greases), which belongs to class L (lubricants, industrial
24、oils and related products), is specified in ISO 6743-9. In this classification, a grease cannot have more than one symbol. This symbol is expected to correspond to the most severe conditions of temperature, water contamination and load in which the grease can be used. NOTE Greases having the same cl
25、assification according to ISO 6743-9 and the same specification according this International Standard are not necessarily compatible with each other. Blending of non-compatible greases can lead to equipment failure. Before changing from one grease to another in an equipment, it is preferable to cons
26、ult the grease suppliers. It is intended that this International Standard be read in conjunction with ISO 6743-9. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated refere
27、nces, the latest edition of the referenced document (including any amendments) applies. ISO 2137:2007, Petroleum products and lubricants Determination of cone penetration of lubricating greases and petrolatum ISO 2176:1995/C1:2001, Petroleum products Lubricating grease Determination of dropping poin
28、t ISO 6299:1998, Petroleum products Determination of dropping point of lubricating greases (wide temperature range) ISO 6743-9:2003, Lubricants, industrial oils and related products (class L) Classification Part 9: Family X (Greases) ISO 6743-99:2002, Lubricants, industrial oils and related products
29、 (class L) Classification Part 99: General ISO 7120:1987, Petroleum products and lubricants Petroleum oils and other fluids Determination of rust-preventing characteristics in the presence of water BS ISO 12924:2010ISO 12924:2010(E) 2 ISO 2010 All rights reservedISO 11007:1997, Petroleum products an
30、d lubricants Determination of rust-prevention characteristics of lubricating greases ISO 11009:2000, Petroleum products and lubricants Determination of water washout characteristics of lubricating greases ISO 13737:2004, Petroleum products and lubricants Determination of low-temperature cone penetra
31、tion of lubricating greases ASTM D1478-07, Standard Test Method for Low-Temperature Torque of Ball Bearing Grease ASTM D2596-97(2008), Standard Test Method for Measurement of Extreme-Pressure Properties of Lubricating Grease (Four-Ball Method) ASTM D4057-06, Standard Practice for Manual Sampling of
32、Petroleum and Petroleum Products DIN 51805:1974, Testing of lubricants; determination of flow pressure of lubricating greases, Kesternich method DIN 51821-1:1988, Testing of lubricants; test using the FAG roller bearing grease testing apparatus FE9 , general working principles DIN 51821-2:1989, Test
33、ing of lubricants ; test using the FAG roller bearing grease testing apparatus FE9, test method A/1500/6000) IP 239/07, Determination of extreme pressure and antiwear properties of lubricating fluids Four ball method (European conditions) IP 396/09, Determination of dropping point of lubricating gre
34、ase Automatic apparatus method NF T60-627:2006, Petroleum products and lubricants Dropping point of lubricating greases Automatic apparatus method NF T60-629:2006, Petroleum products and lubricants Low-temperature torque of ball bearing greases 3 Sampling Unless otherwise specified in commodity spec
35、ifications, samples of lubricants shall be drawn in accordance with ASTM D4057. 4 Requirements for the greases Greases are classified in accordance with the system described in ISO 6743-9, where they are designated in the following manner: ISO - L - X - symbol 1 - symbol 2 - symbol 3 - symbol 4 - NL
36、GI consistency number where symbol 1 is a measurement of the lower operating temperature, symbols A to E; symbol 2 is a measurement of the upper operating temperature, symbols A to G; symbol 3 is a measurement of the water contamination and anti-rust protection, symbols A to I; BS ISO 12924:2010ISO
37、12924:2010(E) ISO 2010 All rights reserved 3 symbol 4 is a measurement of the ability to lubricate under high loads, symbol A or B; the NLGI consistency number is defined in ISO 6743-99 through an evaluation of the penetration in accordance with ISO 2137. Tables 1 to 5 specify test methods and requi
38、rements to establish the compliance with the requirements for each symbol used in the classification system. To establish the requirements for each symbol, limits have been specified based on the test methods considered most relevant. Other test methods may be used to evaluate the characteristics of
39、 the greases if it can be demonstrated that the alternative methods give comparable results. If grease manufacturers want to verify the compliance of their greases with the limits specified for the various symbols of the classification using other test methods, it is their responsibility to establis
40、h the necessary correlations between the specified test methods and the potential alternative methods. 4.1 Symbol 1 Lower operating temperature The lower operating temperature shall be determined by the following three criteria; see Table 1: a) the starting and the running torque, in accordance with
41、 ASTM D1478 (NF T60-629); b) the flow pressure, in accordance with DIN 51805; c) the low-temperature penetrability, in accordance with ISO 13737. Following the criterion selected, the symbol “1” is completed by a suffix letter between brackets: (L) when using the starting/running torque; (F) when us
42、ing the flow pressure; (P) when using the low-temperature penetrability. Table 1 Lower operating temperature Symbol 1 Starting torque mNm Running torque mNm Flow pressure hPa Penetrability 1/10 mm Lower operating temperature C Value Symbol 1 Value Value Symbol 1 Value Symbol 1 0 A (L) A (F) W 140 A
43、(P) 20 B (L) B (F) W 120 B (P) 30 C (L) C (F) W 120 C (P) 40 D (L) D (F) W 100 D (P) 180 G Report F50 100 h at the upper operating temperature Test methods: ISO 2176, ISO 6299, IP 396 or NF T60-627 Test method: DIN 51821-1 and DIN 51821-2; test with the FAG FE 9 grease-testing apparatus, procedure A
44、/1500/6000 4.3 Symbol 3 Water contamination and anti-rust protection Symbol 3 is a combination of the level of water resistance, as evaluated by means of the water washout test in accordance with ISO 11009, and protection against corrosion, as evaluated by the rust-prevention test in accordance with
45、 ISO 11007; see Table 3. The water washout losses shall be determined at 38 C for the greases with a symbol “2” from A to D and at 79 C for the greases with a symbol “2” from E to G. BS ISO 12924:2010ISO 12924:2010(E) ISO 2010 All rights reserved 5Table 3 Water resistance and anti-rust protection Sy
46、mbol 3 Water washout losses Symbol 3 Requirement % (m/m) Temperature C Rust-prevention requirement rating A No requirement 38 No requirement B No requirement 38 1-1 max., distilled water C No requirement 38 2-2 max., salt water ISO 7120 D 30 38 No requirement E 30 79 1-1 max., distilled water F 30 7
47、9 2-2 max., salt water ISO 7120 G 10 79 No requirement H 10 1-1 max., distilled water I 10 2-2 max., salt water ISO 7120 Test method: ISO 11009 Test method: ISO 11007 4.4 Symbol 4 Ability to lubricate under high loads The test to evaluate the ability to lubricate under high load conditions shall be
48、the four-ball test, considering only the weld load and assuming that the response of this test is satisfactory in the presence of extreme-pressure additives; see Table 4. Table 4 Ability of a grease to lubricate under high load conditions Symbol 4 Symbol 4 Four-ball weld load requirement kg Test met
49、hod A None B W 250 ASTM D2596 or IP 239 4.5 NLGI consistency number The NLGI consistency number shall be evaluated by penetration using 60 strokes at 25 C in accordance with ISO 2137. Table 5 shows the correspondence between the NLGI consistency number and the penetration. A gap exists in the penetration numbers between the different NLGI grades. This allows for “unofficial” half grades, e.g. a grease with a penetration of 300 1/10 mm, intermediate betwe
