1、BRITISH STANDARD BS 6413-6: 1991 ISO 6743-6: 1990 Lubricants, industrial oils and related products (class L) Part 6: Classification for family C (Gears)BS6413-6:1991 This British Standard, having been prepared under the directionof the Petroleum Standards Policy Committee, waspublished under the aut
2、horityof the Standards Boardand comes into effect on 29March1991 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference PTC/7 Draft for comment 89/52344 DC ISBN 0 580 19505 8 Committees responsible for this British Standard The preparation of this British S
3、tandard was entrusted by the Petroleum Standards Policy Committee (PTC/-) to Technical Committee PTC/7, upon which the following bodies were represented: Advanced Manufacturing Technology Research Institute Ball and Roller Bearing Manufacturers Association British Coal Corporation British Fluid Powe
4、r Association British Gear Association British Lubricants Federation Limited British Railways Board British Steel plc Department of Transport Electricity Supply Industry in the United Kingdom Engineering Equipment and Materials Users Association Institute of Petroleum London Regional Transport Minis
5、try of Defence Amendments issued since publication Amd. No. Date CommentsBS6413-6:1991 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii 1 Scope 1 2 Normative references 1 3 Explanation of symbols used 1 4 Detailed classification 2 Annex A (informative) Main
6、parameters governing lubricant selection 4 Table 1 Classification of lubricants for gears 2 Table A.1 Stabilized temperature of the oil or ambient temperature 4 Table A.2 Examples of tooth operating conditions 4 Publication(s) referred to Inside back coverBS6413-6:1991 ii BSI 08-1999 National forewo
7、rd This Part of BS6413 has been prepared under the direction of the Petroleum Standards Policy Committee in order to provide a classification scheme for lubricants, industrial oils and related products. It is identical with ISO6743-6:1990 “Lubricants, industrial oils and related products (Class L) C
8、lassification Part6: Family C (Gears)”, published by the International Organization for Standardization (ISO). ISO6743-6 was prepared as a result of discussions in Sub-committee4 “Classifications and specifications” of Technical Committee28 “Petroleum products and lubricants”, in which the United Ki
9、ngdom has participated. A general classification of petroleum products prepared inISO/TC28 has allocated classL to lubricants. BS6413-0 details the subdivision of classL into families of products, to each of which a code letter is allocated. This Part provides a detailed classification within family
10、C of classL. Further Parts of the International Standard will provide a detailed classification within other families of classL and will be published as further Parts of BS6413. A classification of machine tool lubricants has been separately published as BS5063:1982 “Classification for a rationalize
11、d range of lubricants for machine tool applications”, and covers grades drawn from ISO3498:1979 “Lubricants for machine tools Classification”, but does not include all the grades in ISO3498. A British Standard does not purport to include all the necessary provisions of a contract. Users of British S
12、tandards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-references International Standard Corresponding British Standard ISO 3448:1975 BS 4231:1982 Classification for viscosity grades of industrial li
13、quid lubricants (Identical) BS 6413 Lubricants, industrial oils and related products (class L) ISO 6743-0:1981 Part 0:1983 Classification (general) (Identical) ISO 6743-1:1981 Part 1:1983 Classification for family A (total loss systems) (Identical) ISO 6743-9:1987 Part 9:1988 Classification for fami
14、ly X (greases) (Identical) Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the a
15、mendment table on the inside front cover.BS6413-6:1991 BSI 08-1999 1 1 Scope This part of ISO6743 establishes the detailed classification of familyC (gears) which belongs to classL (Lubricants, industrial oils and related products). It should be read in conjunction with ISO6743-0. This part of ISO67
16、43 is concerned only with lubricants for industrial gears. Lubricants for motor vehicle gears may be included in a future edition. To establish this classification, two essential series of parameters have been taken into account, one including the environment and the other considering the tooth oper
17、ating conditions. These parameters are explained inAnnex A. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO6743. At the time of publication, the editions indicated were valid. All standards are subject
18、 to revision, and parties to agreements based on this part of ISO6743 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 3448:1975, Industrial l
19、iquid lubricants ISOviscosity classification. ISO 6743-0:1981, Lubricants, industrial oils and related products (class L) Classification Part 0: General. ISO 6743-1:1981, Lubricants, industrial oils and related products (class L) Classification Part 1: Family A (Total loss systems). ISO 6743-9:1987,
20、 Lubricants, industrial oils and related products (class L) Classification Part 9: Family X (Greases). 3 Explanation of symbols used 3.1 The detailed classification of familyC has been established by defining the categories of products required for the primary applications of gears. 3.2 Each categor
21、y is designated by a symbol consisting of a group of three letters, which together constitute a code. NOTE 1The first letter of the code (C) identifies the family of the product considered, but the second and third letters, taken separately, have no significance of their own. In order to prevent con
22、fusion with the API diesel engine oil code, the letter K is included as the second of the ISO category symbols. The designation of each category shall be supplemented by the addition of viscosity grades according to ISO3448. 3.3 In the present classification system, products are designated in a unif
23、orm manner. For example, a particular product may be designated in the complete form, i.e.ISO-L-CKS, or in an abbreviated form, i.e.L-CKS.BS6413-6:1991 2 BSI 08-1999 4 Detailed classification The detailed classification is shown inTable 1. Table 1 Classification of lubricants for gears Code letter G
24、eneral application Particular application More specific application Composition and properties Symbol ISO-L Typical applications Remarks C Gears Enclosed gears Continuous lubrication by splash circulation or spray Refined mineral oils with oxidation stability, anti-corrosion (ferrous and non-ferrous
25、 metal) and anti-foam properties CKB Gears operating under light load Oils of CKB type with enhanced extreme-pressure and anti-wear properties CKC Gears operating at a stabilized temperature of oil that remains normal or medium and under high load See Annex A Oils of CKC type with enhanced thermal/o
26、xidative stability that permits use at a higher temperature CKD Gears operating at a high stabilized temperature of the oil and under high load Oils of CKB type ensuring low coefficient of friction CKE Gears operating under high friction (e.g. worm gears) Lubricants with oxidation stability, anti-fr
27、iction and anti-corrosion (ferrous and non-ferrous) properties usable under extreme temperature conditions (low and high) CKS Gears operating at a very low, low or very high stabilized temperature of the fluid and under light load 1) See Annex A 2) Categories of products that require high performanc
28、e may be synthetic or contain synthetic bases that risk to pose the problem of compatibility with some equipment regularly used with mineral oils Lubricants of type CKS usable under extreme temperature conditions (low and high) and under high load CKT Gears operating at a very low, low or very high
29、stabilized temperature of the fluid and under high load Continuous splash lubrication Greases with extreme pressure and anti-wear properties CKG a Gears operation under light load See Annex ABS6413-6:1991 BSI 08-1999 3 Table 1 Classification of lubricants for gears Code letter General application Pa
30、rticular application More specific application Composition and properties Symbol ISO-L Typical applications Remarks Open gears may be fitted with safety guards Intermittent or dip or mechanical application Products usually of bituminous type with anti-corrosion properties CKH Cylindrical or bevel ge
31、ars operating at medium ambient temperatures and generally under light load 1) See Annex A 2) AB oils as defined in ISO 6743-1 may be used for the same applications as CKJ lubricants 3) These products can be used with a volatile diluent for ease of application (in this case, they shall be designated
32、 as follows: CKH-DIL or CKJ-DIL Products of CKH type with enhanced extreme-pressure and anti-wear properties CKJ Greases with improved extreme-pressure, anti-wear and anti-corrosion properties and improved thermal stability CKL a Cylindrical or bevel gears operating at high or very high ambient temp
33、eratures and under high load See Annex A Intermittent application Products with improved anti-seizing properties that permit use under extreme load conditions, and products with anti-corrosion properties CKM Gears operating occasionally under exceptionally high loads Products that cannot be sprayed
34、a These applications may concern several greases. The grease designation according to ISO 6743-9 shall be indicated by the supplier.BS6413-6:1991 4 BSI 08-1999 Annex A (informative) Main parameters governing lubricant selection To establish this classification, two essential series of parameters hav
35、e been taken into account: the environment; the tooth operating conditions (load level and sliding velocity). These parameters are not the only ones to be considered when a lubricant has to be selected. Nevertheless, due to their importance and for clarification purposes, these parameters have been
36、quantified. The values given inTable A.1 andTable A.2 below have been shown to assist in making a choice. They should be considered only as guides, however. Table A.1 Stabilized temperature of the oilor ambient temperature Table A.2 Examples of tooth operating conditions Very low +120 C Light load D
37、efinition Load level usually encountered in so-called “lightly loaded” gears with a contact stress generally below 500 MPa (500 N/mm 2 ) and with a maximum sliding velocity (v g ) on the tooth surface generally lower than one-third of the pitch line velocity on the working pitch cylinder (v) High lo
38、ad Load level usually encountered in so-called “heavily loaded” gears with a contact stress generally above 500 MPa (500 N/mm 2 ) and with a maximum sliding velocity (v g ) possibly higher than one-third of the pitch line velocity on the working pitch cylinder (v)BS6413-6:1991 BSI 08-1999 Publicatio
39、n(s) referred to See national foreword.BS 6413-6: 1991 ISO 6743-6: 1990 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international lev
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