1、BSI Standards PublicationBS EN ISO 286-2:2010Geometrical productspecifications (GPS) ISO codesystem for tolerances on linearsizesPart 2: Tables of standard tolerance classes and limit deviations for holes and shafts BS EN ISO 286-2:2010Incorporating corrigendum August 2013BS EN ISO 286-2:2010 BRITIS
2、H STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 286-2:2010. It is identical to ISO 286-2:2010, incorporating corrigendum August 2013. It supersedes BS EN 20286-2:1993 which is withdrawn.The start and finish of text introduced or altered by corrigendum is indicated
3、 in the text by tags. Text altered by ISO corrigendum August 2013 is indicated in the text by .The UK participation in its preparation was entrusted to Technical Committee TDW/4, Technical Product Realization.A list of organizations represented on this committee can be obtained on request to its sec
4、retary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2013. Published by BSI Standards Limited 2013ISBN 978 0 580 84036 4ICS 17.040.10Compliance with a British Standard cann
5、ot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2010Amendments/corrigenda issued since publicationDate Text affected31 August 2013 Implementation of ISO corrigendum August 2013EUROPEAN STANDAR
6、D NORME EUROPENNE EUROPISCHE NORM EN ISO 286-2 June 2010 ICS 17.040.10 Supersedes EN 20286-2:1993English Version Geometrical product specifications (GPS) - ISO code system for tolerances on linear sizes - Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts (ISO 286
7、-2:2010) Spcification gomtrique des produits (GPS) - Systme de codification ISO pour les tolrances sur les tailles linaires - Partie 2: Tableaux des classes de tolrance normalises et des carts limites des alsages et des arbres (ISO 286-2:2010) Geometrische Produktspezifikation (GPS) - ISO-Toleranzsy
8、stem fr Lngenmae - Teil 2: Tabellen der Grundtoleranzgrade und Grenzabmae fr Bohrungen und Wellen (ISO 286-2:2010) This European Standard was approved by CEN on 15 May 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europ
9、ean Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (Englis
10、h, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria,
11、Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STAND
12、ARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 286-2:2010: EBS EN ISO 286-2:2010EN ISO 286-2:20
13、10 (E) 3 Foreword This document (EN ISO 286-2:2010) has been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification“ in collaboration with Technical Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” the
14、secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2010, and conflicting national standards shall be withdrawn at the latest by December 2010. Attentio
15、n is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 20286-2:1993. According to the CEN/CENELEC Internal Regulations, t
16、he national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Nethe
17、rlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 286-2:2010 has been approved by CEN as a EN ISO 286-2:2010 without any modification. BS EN ISO 286-2:2010ISO 286-2:2010(E) ISO 2010 All rights reserved
18、 iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references3 3 Standard tolerances3 4 Limit deviations for holes.4 5 Limit deviations for shafts4 6 Presentation of Tables 2 to 32 .4 Annex A (informative) Graphical review of tolerance intervals for holes and shafts 45 Annex B (inform
19、ative) Relationship to the GPS matrix model .50 Bibliography52 BS EN ISO 286-2:2010ISO 286-2:2010(E) ISO 2010 All rights reserved iiiContents Page Foreword iv Introduction.v 1 Scope1 2 Normative references3 3 Standard tolerances3 4 Limit deviations for holes.4 5 Limit deviations for shafts4 6 Presen
20、tation of Tables 2 to 32 .4 ex A (infor ative) Graphical review of tolerance intervals for holes and shafts 45 Annex B (informative) Relationship to the GPS matrix model .50 Bibliography52 ivBS EN ISO 286-2:2010ISO 286-2:2010(E) iv ISO 2010 All rights reservedForeword ISO (the International Organiza
21、tion for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). 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
22、has the right to be represented on that committee. International organizations, governmental and non-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. In
23、ternational Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 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. Publi
24、cation as an International Standard requires 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent r
25、ights. ISO 286-2 was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical product specifications and verification. This second edition cancels and replaces the first edition (ISO 286-2:1988), which has been technically revised. It also incorporates the Technical Corrigendum ISO 28
26、6-2:1988/Cor.1:2006. ISO 286 consists of the following parts, under the general title Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes: Part 1: Basis of tolerances, deviations and fits Part 2: Tables of standard tolerance classes and limit deviations for holes
27、and shafts BS EN ISO 286-2:2010ISO 286-2:2010(E) ISO 2010 All rights reserved vIntroduction This part of ISO 286 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISO/TR 14638). It influences chain links 1 and 2 of the chain of standards on si
28、ze in the general GPS matrix. For more detailed information on the relationship of this part of ISO 286 to the GPS matrix model, see Annex B. The need for limits and fits for machined workpieces was brought about mainly by the requirement for interchangeability between mass-produced parts and the in
29、herent inaccuracy of manufacturing methods, coupled with the fact that “exactness” of size was found to be unnecessary for most workpiece features. In order that the fit function could be satisfied, it was found sufficient to manufacture a given workpiece so that its size lay within two permissible
30、limits, i.e. a tolerance, this being the variation in size acceptable in manufacture while ensuring the functional fit requirements of the product. Similarly, where a specific fit condition is required between mating features of two different workpieces, it is necessary to ascribe an allowance, eith
31、er positive or negative, to the nominal size to achieve the required clearance or interference. ISO 286 gives the internationally accepted code system for tolerances on linear izes. It provides a system of tolerances and deviations suitable for two types of feature: “cylinder” and “two parallel oppo
32、site surfaces”. The main intention of this code system is the fulfilment of the function fit. The terms “hole”, “shaft” and “diameter” are used to designate the types of feature of cylinders (e.g. for the tolerancing of the diameter of a hole or shaft). For simplicity, they are also used for two par
33、allel opposite surfaces (e.g. for the tolerancing of the thickness of a key or the width of a slot). The pre-condition for the application of the ISO code system for tolerances on linear sizes for the features forming a fit is that the nominal sizes of the hole and the shaft are identical. The previ
34、ous edition of ISO 286-2 (published in 1988) had the envelope criterion as the default association criterion for the size of a feature; however, ISO 14405-1 changes this default association criterion to the two-point size criterion. This means that form is no longer controlled by the default specifi
35、cation of size. In many cases, the diameter tolerances specified in this part of ISO 286 are not sufficient for effective control of the intended function of the fit. The envelope criterion specified in ISO 14405-1 may be required. In addition, the use of geometrical form tolerances and surface text
36、ure requirements may improve the control of the intended function. A general graphical representation of the relationship between the respective tolerance classes and their deviations is given in Annex A. BS EN ISO 286-2:2010INTERNATIONAL STANDARD ISO 286-2:2010(E) ISO 2010 All rights reserved 1Geom
37、etrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 2: Tables of standard tolerance classes and limit deviations for holes and shafts 1 Scope This part of ISO 286 gives values of the limit deviations for commonly used tolerance classes for holes and shafts calcul
38、ated from the tables given in ISO 286-1. This part of ISO 286 covers values for the upper limit deviations ES (for holes) and es (for shafts), and the lower limit deviations EI (for holes) and ei (for shafts) (see Figures 1 and 2). NOTE In the tables of limit deviations, the values of the upper limi
39、t deviation ES or es are shown above the values of the lower limit deviation EI or ei except for tolerance classes JS and js which are symmetrical about the zero line. The ISO system for tolerances on linear size provides a system of tolerances and deviations suitable for features of the following t
40、ypes: a) cylinders; b) two parallel opposite surfaces. For simplicity, and also because of the importance of cylindrical workpieces of circular section, only these are referred to explicitly. It should be clearly understood, however, that the tolerances and deviations given in this part of ISO 286 e
41、qually apply to workpieces of other than circular sections. In particular, the term “hole” or “shaft” is used to designate features of the cylinder type (e.g. for the tolerancing of the diameter of a hole or shaft) and, for simplicity, these terms are also used for two parallel opposite surfaces (e.
42、g. for the tolerancing of the thickness of a key or the width of a slot). For further information on terminology, symbols, the basis of the system, etc., see ISO 286-1. BS EN ISO 286-2:2010ISO 286-2:2010(E) 2 ISO 2010 All rights reservedITEIESEIESESEIA to G H JS J K M N P to ZCES EI= + IT ES =0 + IT
43、ES =+ IT/2ES 0 ES ES 0 EI =0 EI =- IT/2EI ES=-ITIT see Table 1Limit deviations0+_Key 1 K1 to K3, and also K4 to K8 for sizes for which 0 ES ES 0 EI =0 EI =- IT/2EI ES=-ITIT see Table 1Limit deviations0+_Key 1 K1 to K3, and also K4 to K8 for sizes for which 0 (see Table 2) ES (see Table 2 and 3) ES 0
44、 (see Table 2) EI = 0 EI = - IT/2 EI = ES - IT NOTE 1 IT, see Table 1. NOTE 2 The represented tolerance intervals correspond approximately to a nominal size range of above 10 mm up to and including 18 mm. Key 1 K1 to K3, and also K4 to K8, for nominal size 3 mm 2 K4 to K8, for sizes for which 3 mm 5
45、00 mm 4 M1 to M6 5 M9 to M18, and also M7 to M8 for nominal size 500 mm 6 N1 to N8 and also N9 to N18 for sizes for which 1 mm 500 mm 7 N9 to N18 for sizes for which 3 mm 0 ei = 0+_Key 1 j5, j6 2 k1 to k3, and k4 to k7 for sizes for which 0 ei = 0+_Key 1 j5, j6 2 k1 to k3, and k4 to k7 for sizes for
46、 which 0 (see Table 5) ei 0 (see Table 5) NOTE 1 IT, see Table 1. NOTE 2 The represented tolerance intervals correspond approximately to a nominal size range of above 10 mm up to and including 18 mm. Key 1 j5, j6 2 k1 to k3, and also k4 to k7 for nominal size 3 mm 3 k4 to k7 for sizes where 3 mm 500
47、 mm Page 8, Table 2 In Table 2, replace 60 by 660 as the value for the lower limit deviation, EI, for tolerance class A9 for the nominal size above 180 mm up to and including 200 mm. Page 12, Table 6 In Table 6, replace 25 by 26 as the value for the upper limit deviation, ES, for tolerance class H1
48、for the nominal size above 2 500 mm up to and including 3 150 mm. BS EN ISO 286-2:2010ISO 286-2:2010(E) 4 ISO 2010 All rights reserved4 Limit deviations for holes A synoptic representation of the tolerance classes for holes, as given in this part of ISO 286, is shown in Figures 3 and 4. Attention is
49、 drawn to the fact that the tolerance classes shown in Figures 3 and 4, and their limit deviations given in Tables 2 to 16, are not intended to give detailed directives on the selection of tolerance classes for any purpose. Recommendations for the selection of tolerance classes are given in ISO 286-1:2010, Subclause 4.4 and Clause 5. NOTE Some tolerance classes are only provided for a restricted number of nominal size ranges. For further information, see 6.1. 5 Limit deviations for shafts A synoptic representation
