SANS 12128-2006 Plain bearings - Lubrication holes grooves and pockets - Dimensions types designation and their application to bearing bushes《滑动轴承 润滑孔、润滑槽和润滑衬套 轴承套的尺寸、类型、标识以及应用》.pdf

1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA

2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any

3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ICS 21.100.10; 21.260 ISBN 0-626-17467-8 SANS 12128:2006Edition 1ISO 12128:2001Edition 2 SOUTH AFRICAN NATIONAL STANDARD Plain bearings Lubrication holes

4、, grooves and pockets Dimensions, types, designation and their application to bearing bushes This national standard is the identical implementation of ISO 12128:2001 and is adopted with the permission of the International Organization for Standardization. Published by Standards South Africa 1 dr lat

5、egan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www.stansa.co.za Standards South Africa SANS 12128:2006 Edition 1 ISO 12128:2001 Edition 2 Table of changes Change No. Date Scope Abstract Specifies dimensions for lubrication holes, gr

6、ooves and pockets for bearing bushes. In addition, it enables the user to assign the different types of lubricant feed and distribution to plain bearing bushes made of copper alloys, thermosetting plastics, thermoplastics or of artificial carbon. Keywords bearing bushes, copper alloys, designation,

7、dimensions, lubrication, plain bearings, thermoplastics, thermosetting polymers. National foreword This South African standard was approved by National Committee StanSA TC 5120.02, Bearings, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement.

8、 INTERNATIONALSTANDARDISO12128Second edition2001-09-15Reference numberISO 12128:2001(E) ISO 2001Plain bearings Lubrication holes,grooves and pockets Dimensions, types,designation and their application to bearingbushesPaliers lisses Trous, rainures et poches de graissage Dimensions,types, dsignation

9、et leurs applications dans les baguesISO 12128:2001(E)ii ISO 2001 All rights reservedPDF disclaimerThis PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not beedited unless the typefaces which are embedded are licensed

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12、ound, please inform the Central Secretariat at the address given below. ISO 2001All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, elec-tronic or mechanical, including photocopying and microfilm, without permission

13、in writing from either ISO at the address below or ISOs mem-ber body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.chWeb www.iso.chPrinted in SwitzerlandISO 12128:2001(E) ISO 2001 All rights reserve

14、d iiiForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISOmember bodies). The work of preparing International Standards is normally carried out through ISO technicalcommittees. Each member body interested in a subject for which a

15、 technical committee has been established hasthe right to be represented on that committee. International organizations, governmental and non-governmental, inliaison with ISO, also take part in the work. ISO collaborates closely with the International ElectrotechnicalCommission (IEC) on all matters

16、of electrotechnical standardization.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.Publication as an International Standard requi

17、res approval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this International Standard may be the subject ofpatent rights. ISO shall not be held responsible for identifying any or all such patent rights.International Standard

18、ISO 12128 was prepared by Technical Committee ISO/TC 123, Plain bearings,Subcommittee SC 3, Dimensions, tolerances and construction details.This second edition cancels and replaces the first edition (ISO 12128:1995), which has been technically revised.INTERNATIONAL STANDARD ISO 12128:2001(E) ISO 200

19、1 All rights reserved 1Plain bearings Lubrication holes, grooves and pockets Dimensions, types, designation and their application to bearingbushes1 ScopeThis International Standard specifies dimensions for lubrication holes, grooves and pockets for bearing bushes.These dimensions can be entered, e.g

20、. on drawings, using the designation examples. Their use depends inparticular on the specific operating conditions.In addition, it enables the user to assign the different types of lubricant feed and distribution to plain bearing bushesmade of copper alloys, thermosetting plastics, thermoplastics or

21、 of artificial carbon.NOTE Different types of lubricant feed and distribution for plain bearing bushes made of sintered metals have not been specifieddue to the fact that these bushes are soaked with lubricant. Plain bearing bushes made of artificial carbon are not lubricated withoil or grease.2 Nor

22、mative referencesThe following normative documents contain provisions which, through reference in this text, constitute provisions ofthis International Standard. For dated references, subsequent amendments to, or revisions of, any of thesepublications do not apply. However, parties to agreements bas

23、ed on this International Standard are encouraged toinvestigate the possibility of applying the most recent editions of the normative documents indicated below. Forundated references, the latest edition of the normative document referred to applies. Members of ISO and IECmaintain registers of current

24、ly valid International Standards.ISO 2768-1:1989, General tolerances Part 1: Tolerances for linear and angular dimensions without individual tol-erance indications.ISO 4379:1993, Plain bearings Copper alloy bushes.3 Dimensions, types and designation3.1 GeneralThe dimensions of the lubrication holes,

25、 grooves and pockets are related to the bearing wall thickness . The givendiameter shall only serve as an auxiliary dimension.All dimensions are given in millimetres.sd1ISO 12128:2001(E)2 ISO 2001 All rights reserved3.2 Lubrication holes3.2.1 Dimensions and typesSee Figure 1 and Table 1.Lubrication

26、holes may be provided in conjunction with lubrication grooves and pockets, or, if the requirement to bemet by a lubrication point is less stringent, even without these.3.2.2 DesignationEXAMPLE A lubrication hole of type A with before diameter , is designated as follows:Lubrication hole ISO 12128 - A

27、3Figure 1 Lubrication holesTable 1 Dimensions of the lubrication holes2,5 3 4 5 6 8 10 1211,522,53456Type A 4,5 6 8 10 12 16 20 24Type B 6 8,2 10,8 13,6 16,2 21,8 27,2 32,6 2 2.5 3 4 5 7,5 1022,53 4 57,510nom.d2t1d3s6d1d16 30 30 6 100 d1 100d2= 3mmISO 12128:2001(E) ISO 2001 All rights reserved 33.3

28、Lubrication grooves3.3.1 Dimensions and typesSee Figures 2 and 3 and Tables 2 and 3.Lubrication grooves are mainly provided on plain bearings. Types C, D and E are also used in conjunction with type H(circumferential groove), predominantly on plain bearings made of non-ferrous metal, steel, cast iro

29、n or plastics,types F and G predominantly on plain bearings made from artificial carbon.Type J is a narrow blended groove principally for use with grease lubrication. In order to facilitate machining andavoid burrs, all sharp corners may have a small break edge or radius.NOTE In order to facilitate

30、manufacture, the dimension of the bearing thickness remaining at the base of the groove may bespecified on the drawing as the control dimension.Figure 2 Lubrication groovesISO 12128:2001(E)4 ISO 2001 All rights reserved3.3.2 DesignationEXAMPLE A lubrication groove of type D with groove depth , is de

31、signated as follows:Lubrication groove ISO 12128 - D0,8Table 2 Dimensions of lubrication groovesType Type Type Type Type Type Type TypeCtoJ D,E J G H C D F J C J J J CtoH J0,4 3 31,231,51,51 11,511,5 1 160,6 4 4 1,6 3 1,5 1,5 1 1,5 2 1,5 2,1 1 1,5 200,8 5 5 1,8 3 1,5 2,5 1 1,5 3 1,5 2,2 1,5 2 301 8

32、62 4 2 41,524,522,8 2 2,5 401,210,562,552,5622622,6 2,53 401,6 14 7 3,5 6 3 8 3 2,5 9 2,5 3 3 4 502 19 8 4,5 8 4 12 4 2,5 12 2,5 26 4 5 602,5 28 8 7,5 10 5 20 5 3 15 3 2,8 5 7,5 703,2 38 11 12 7 28 7 21 7,5 10 4 49141593592710 aRoundedFigure 3 Lubrication grooves with closed endsTable 3 Dimensions f

33、or distancenom.34610t2e1e2r1r2y s d1 628d16 3025252222d16 100202020d1 100ab 15 6 b 6 30 30 100at2= 0,8 mmISO 12128:2001(E) ISO 2001 All rights reserved 53.4 Lubrication pockets3.4.1 Dimensions and typesSee Figure 4 and Table 4.Lubrication pockets shall in general be provided in cases where larger lu

34、brication spaces are required. Type K shallpredominantly be used for plain slideways with a to-and-fro movement in a straight line.3.4.2 DesignationEXAMPLE A lubrication pocket of type K with pocket depth , is designated as follows:Lubrication pocket ISO 12128 - K2,53.5 DesignPermissible deviations

35、without tolerance indications shall be in accordance with tolerance class “c” specified inISO 2768-1. The edges shall be chamfered to or rounded. Sharp-edged transitions to the sliding surfaceshall be avoided.Lubrication holes, grooves and pockets should not be arranged in the stressed zone of the p

36、lain bearing. With theexception of plain bearings made from artificial carbon, lubrication grooves and pockets shall in general not be madeover the whole length of the bearing. The shape of the groove or pocket runout shall be left to the manufacturersdiscretion.NOTE When producing lubrication groov

37、es and pockets in plain bearings from tough and hard materials, chatter marks mayoccur on the bottom of the groove, which do not impair the operation of the plain bearing. Lubrication holes, grooves and pocketsare not provided on plain bearings made from sintered metal, since these are soaked with l

38、ubricant.Figure 4 Lubrication pocketTable 4 Dimensions of the lubrication pockets1,6 6 8 1,8 6,52,5 8 15 2,8 14410244,52061235633t2d2e1e2r2t2= 2,5 mm0,5 max.ISO 12128:2001(E)6 ISO 2001 All rights reserved4 Lubrication holes, grooves and pockets on bearing bushes (see Table 5)The dimensions and types

39、 of the lubrication holes, grooves and pockets on bearing bushes in accordance with thisInternational Standard are given in 3.2 to 3.4.Examples for the designation of bearing bushes without lubrication holes, grooves and pockets are to be taken fromthe relevant standards on dimensions.The symbol rep

40、resents, in the ISO designation, the required distance from the insert side, unless ; thesymbol represents the required dimension for the groove pitch, which is from up to .If two lubrication holes and grooves are provided, they shall be located at to each other, if there are three atand four at to

41、each other.Only one type and one bush form are illustrated and designated, each with freely chosen values for the dimensionsand .5 Examples of the designation of bushes with lubrication holes and/or groovesBush made of CuSn8P accordance with ISO 4379, with two lubrication holes of type L (2L) corre-

42、sponding to bush A of this International Standard, off-centre, with distance is designated as follows.BushISO4379-C20x24x20Y-A2L6-CuSn8PSame bush but with two longitudinal grooves of type D (2D) corresponding to bush type C of this InternationalStandard is designated as follows.Bush ISO 4379 - C 20

43、x 24 x 20 Y - A2L62D - CuSn8PBush made of CuSn8P accordance with ISO 4379, with three longitudinal grooves of type D (3D)corresponding to bush type C of this International Standard, in conjunction with one circumferential groove of type H(1H) corresponding to bush of type E of this International Sta

44、ndard, off-centre, with distance is designatedas follows.BushISO4379-C20x24x20Y-C3DE1H6-CuSn8Px x = b=2h 0,1b 1b18012090xhC20 24 20 Yx = 6mmC20 24 20 Yx = 6mmISO 12128:2001(E) ISO 2001 All rights reserved 7Table 5 Types of bearing bushLubrication holes and groovesBush typeTypeaccordancewith clause 3

45、Type and application Bearing bush materialAABLLubrication hole, in-centreor off-centreCopper alloysThermosetting plasticsThermoplasticsCCDEJLongitudinal groove closedat both endsCopper alloysThermosetting plasticsThermoplasticsEGHCircumferential groove,in-centre or off-centreCopper alloysThermosetti

46、ng plasticsThermoplasticsArtificial carbonGCDEJLongitudinalgrooveopenatthe end opposite the insertsideCopper alloysThermosetting plasticsThermoplasticsHCDEJLongitudinalgrooveopenatthe end towards the insertsideCopper alloysThermosetting plasticsThermoplasticsISO 12128:2001(E)8 ISO 2001 All rights re

47、servedJCDEFJLongitudinalgrooveopenatboth endsCopper alloysArtificial carbonKCFJHelical groove, right-handthreadCopper alloysArtificial carbonLCFJHelical groove, left-handthreadCopper alloysArtificial carbonMCJOctagonal grooveCopper alloysThermosetting plasticsThermoplasticsNCJOval grooveCopper alloy

48、sThermosetting plasticsThermoplasticsTable 5 Types of bearing bush (continued)Lubrication holes and groovesBush typeTypeaccordancewith clause 3Type and application Bearing bush material Standards South AfricaThis s tandard may only be used and printed by approved subscription and freemailing clients of the SABS .