1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 12297:2012Rolling bearings Steel cylindrical rollers Dimensions and tolerancesBS ISO 12297:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementa
2、tion of ISO 12297:2012. The UK participation in its preparation was entrusted to T e c h n i c a l Committee MCE/7, Rolling bearings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provis
3、ions of a contract. Users are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 69169 0 ICS 21.100.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was publishe
4、d under the authority of the Standards Policy and Strategy Committee on 30 April 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 12297:2012 ISO 2012Rolling bearings Steel cylindrical rollers Dimensions and tolerancesRoulements Rouleaux cylindriques en acier Dimensions et t
5、olrancesINTERNATIONAL STANDARDISO12297First edition2012-03-15Reference numberISO 12297:2012(E)BS ISO 12297:2012ISO 12297:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utiliz
6、ed in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 2
7、2 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 12297:2012ISO 12297:2012(E) ISO 2012 All rights reserved iiiContents PageForeword iv1 Scope 12 Normative references . 13 Terms and definitions . 14 Symbols . 45 Dimensions . 66 Tolerances .107 Hardness 10Annex A (informa
8、tive) Roller diameter gauges and sorting principles 11Annex B (informative) Roller length tolerances, gauges and sorting principles 12Annex C (informative) Method for assessment of deviation from circular form of roller outside diameter surface 13Bibliography .14BS ISO 12297:2012ISO 12297:2012(E)For
9、ewordISO (the International Organization 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 techn
10、ical committee has been established 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
11、electrotechnical standardization.International 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 t
12、he member bodies for voting. Publication 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 ide
13、ntifying any or all such patent rights.ISO 12297 was prepared by Technical Committee ISO/TC 4, Rolling bearings, Subcommittee SC 5, Needle, cylindrical and spherical roller bearings.iv ISO 2012 All rights reservedBS ISO 12297:2012INTERNATIONAL STANDARD ISO 12297:2012(E)Rolling bearings Steel cylindr
14、ical rollers Dimensions and tolerances1 ScopeThis International Standard specifies requirements for finished steel cylindrical rollers for rolling bearings. The maximum roller diameter is 40 mm.2 Normative referencesThe following referenced documents are indispensable for the application of this doc
15、ument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1132-1:2000, Rolling bearings Tolerances Part 1: Terms and definitionsISO 5593:1997, Rolling bearings VocabularyISO 15241, Rolling
16、 bearings Symbols for quantities3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 1132-1 and ISO 5593 and the following apply.3.1roller diameterDwdiameter value used for the general identification of roller diameterISO 5593:1997, definition 05.05.013.2s
17、ingle roller diameterDwsdistance between two tangents to the actual surface of a roller parallel to each other and in a radial planeNOTE Adapted from ISO 5593:1997, definition 05.05.02.3.3mean roller diameter in a single planeDwmparithmetical mean of the largest and the smallest of the single roller
18、 diameters in a single radial planeISO 5593:1997, definition 05.05.033.4variation of mean roller diameterVDwmpdifference between the largest and the smallest of the mean roller diameters measured in two radial planes in the cylindrical part of the roller arranged symmetrically to the middle of the r
19、oller ISO 2012 All rights reserved 1BS ISO 12297:2012ISO 12297:2012(E)3.5variation of roller diameter in a single planeVDwspdifference between the largest and the smallest of the single roller diameters in a single radial planeISO 5593:1997, definition 05.05.043.6roller lengthLwlength value used for
20、 the general identification of roller lengthNOTE Adapted from ISO 5593:1997, definition 05.05.05.3.7chamfer dimensionrroller chamfer dimension value used for reference purposes3.8single chamfer dimensionrsradial distance, in a single axial plane, between the imaginary sharp corner of a roller and th
21、e intersection of a chamfer surface and the roller end faceNOTE Adapted from ISO 1132-1:2000, definition 5.4.2.3.9single chamfer dimensionrsaxial distance, in a single axial plane, between the imaginary sharp corner of a roller and the intersection of a chamfer surface and the roller outside diamete
22、r surfaceNOTE Adapted from ISO 1132-1:2000, definition 5.4.2.3.10smallest single chamfer dimensionrs minminimum limit smallest permissible radial and axial single chamfer dimensions of a rollerNOTE Adapted from ISO 1132-1:2000, definition 5.4.3.3.11largest single chamfer dimensionrs maxmaximum limit
23、 largest permissible radial and axial single chamfer dimensions of a rollerNOTE Adapted from ISO 1132-1:2000, definition 5.4.4.3.12axial runout of roller end face with respect to the roller axisSDwdifference between the largest and the smallest of the axial distances of the end surface at a certain
24、radial distance from the roller axis3.13deviation from circular form of roller outside diameter surfaceRwradial distance between the smallest circumscribed circle and the greatest inscribed circle, with their centres common to the least squares circle centre2 ISO 2012 All rights reservedBS ISO 12297
25、:2012ISO 12297:2012(E)3.14surface roughnesssurface irregularities with relatively small spacing, which usually include irregularities resulting from the method of manufacture being used and/or other influencesNOTE These irregularities are considered within the limits that are conventionally defined,
26、 e.g. within the limits of the sampling length.3.15roller diameter gaugeamount by which the mean diameter of a roller diameter gauge lot should differ from the nominal roller diameter, this amount being one of an established seriesNOTE 1 Each roller diameter gauge is a whole multiple of the roller d
27、iameter gauge interval established for the roller grade in question.NOTE 2 A roller diameter gauge, in combination with the roller grade and nominal roller diameter, should be considered as the most exact roller size specification to be used by a customer for ordering purpose.3.16interval of roller
28、diameter gaugeIGDwamount by which the permitted mean diameter of roller diameter gauge lot is divided3.17roller length gaugeamount by which the mean length of a roller length gauge lot should differ from the nominal roller length, this amount being one of an established seriesNOTE Each roller length
29、 gauge is a whole multiple of the roller length gauge interval established for a certain nominal roller length.3.18interval of roller length gaugeIGLwamount by which the permitted mean length of roller length gauge lot is divided3.19roller diameter gauge lotquantity of rollers of the same roller gra
30、de and nominal dimensions, all having the mean roller diameter in a single plane within the same roller diameter gauge3.20mean diameter of roller diameter gauge lotDwmLarithmetical mean of the mean diameter of the largest roller and the smallest roller in a roller diameter gauge lot3.21roller length
31、 gauge lotquantity of rollers, all having the mean roller length within the same roller length gauge3.22mean length of roller length gauge lotLwmLarithmetical mean of the mean length of the longest roller and the shortest roller length in a roller length gauge lot3.23variation of roller diameter gau
32、ge lot diameterVDwLdifference between the mean diameter in a single plane of the roller having the largest such diameter and that of the roller having the smallest such diameter in a roller diameter gauge lot ISO 2012 All rights reserved 3BS ISO 12297:2012ISO 12297:2012(E)3.24variation of roller len
33、gth gauge lot lengthVLwLdifference between the mean length of the roller having the largest such length and that of the roller having the smallest such length in a roller length gauge lot3.25roller gradeGspecific combination of dimensional, form, surface roughness and sorting tolerances for rollersI
34、SO 5593:1997 definition 05.05.103.26hardnessmeasure of resistance to penetration as determined by a specific method, such as Rockwell hardness test3.27roller outside diameter surfacesurface generated by the available roller length when rotating around the roller axisNOTE The available roller length
35、is given by La= Lw 2r.4 SymbolsFor the purposes of this document, the symbols given in ISO 15241 and the following apply.The symbols (except those for tolerances) shown in Figure 1 and the values given in Table 1 denote nominal dimensions, unless specified otherwise.Dwroller diameterDwmLmean diamete
36、r of roller diameter gauge lotG roller gradeIGDwinterval of roller diameter gaugeIGLwinterval of roller length gaugeLaavailable roller length, La= Lw 2rLwroller lengthLwmLmean length of roller length gauge lotr chamfer dimensionrssingle chamfer dimensionrs minsmallest single chamfer dimensionrs maxl
37、argest single chamfer dimensionSDwaxial runout of roller end face with respect to the roller axisVDwLvariation of roller diameter gauge lot diameterVDwmpvariation of mean roller diameterVDwspvariation of roller diameter in a single plane4 ISO 2012 All rights reservedBS ISO 12297:2012ISO 12297:2012(E
38、)VLwLvariation of roller length gauge lot lengthRwdeviation from circular form of roller outside diameter surfaceFigure 1 Cylindrical roller ISO 2012 All rights reserved 5BS ISO 12297:2012ISO 12297:2012(E)5 DimensionsThe dimensions of the cylindrical rollers are given in Table 1.Table 1 Dimensions f
39、or cylindrical rollersDimensions in millimetresDwLwrs minars max3 3 0,1 0,73 4 0,1 0,73 5 0,1 0,73,5 5 0,1 0,74 4 0,2 0,74 6 0,2 0,74 8 0,2 0,74,5 4,5 0,2 0,74,5 6 0,2 0,75 5 0,2 0,75 8 0,2 0,75 10 0,2 0,75,5 5,5 0,2 0,75,5 8 0,2 0,76 6 0,2 0,76 8 0,2 0,76 9 0,2 0,76 10 0,2 0,76 12 0,2 0,76,5 6,5 0,
40、2 0,86,5 8 0,2 0,86,5 9 0,2 0,87 7 0,2 0,87 10 0,2 0,87 14 0,2 0,87,5 7,5 0,2 0,87,5 9 0,2 0,87,5 10 0,2 0,87,5 11 0,2 0,88 8 0,3 0,88 10 0,3 0,88 12 0,3 0,88 14 0,3 0,86 ISO 2012 All rights reservedBS ISO 12297:2012ISO 12297:2012(E)DwLwrs minars max8 16 0,3 0,88 20 0,3 0,89 9 0,3 1,09 10 0,3 1,09 1
41、2 0,3 1,09 13 0,3 1,09 14 0,3 1,010 10 0,3 1,010 11 0,3 1,010 14 0,3 1,010 15 0,3 1,010 16 0,3 1,010 17 0,3 1,010 25 0,3 1,011 11 0,3 1,011 12 0,3 1,011 13 0,3 1,011 15 0,3 1,011 20 0,3 1,012 12 0,3 1,012 14 0,3 1,012 16 0,3 1,012 17 0,3 1,012 18 0,3 1,012 21 0,3 1,012 22 0,3 1,013 13 0,3 1,213 18 0
42、,3 1,213 20 0,3 1,214 14 0,3 1,214 15 0,3 1,214 20 0,3 1,214 22 0,3 1,215 15 0,4 1,215 16 0,4 1,215 17 0,4 1,215 22 0,4 1,2Table 1 (continued) ISO 2012 All rights reserved 7BS ISO 12297:2012ISO 12297:2012(E)DwLwrs minars max15 24 0,4 1,216 16 0,4 1,216 17 0,4 1,216 18 0,4 1,216 24 0,4 1,216 27 0,4 1
43、,217 17 0,4 1,217 24 0,4 1,218 18 0,4 1,218 19 0,4 1,218 26 0,4 1,218 30 0,4 1,219 19 0,4 1,519 20 0,4 1,519 21 0,4 1,519 28 0,4 1,519 32 0,4 1,520 20 0,4 1,520 30 0,4 1,521 21 0,5 1,521 22 0,5 1,521 30 0,5 1,521 32 0,5 1,522 22 0,5 1,522 24 0,5 1,522 34 0,5 1,523 23 0,5 1,523 34 0,5 1,524 24 0,5 1,
44、524 26 0,5 1,524 36 0,5 1,524 38 0,5 1,525 25 0,5 1,725 27 0,5 1,725 33,5 0,5 1,725 36 0,5 1,7Table 1 (continued)8 ISO 2012 All rights reservedBS ISO 12297:2012ISO 12297:2012(E)DwLwrs minars max25 40 0,5 1,726 26 0,5 1,726 28 0,5 1,726 40 0,5 1,726 48 0,5 1,728 28 0,6 1,728 30 0,6 1,728 36 0,6 1,728
45、 44 0,6 1,728 46 0,6 1,730 30 0,6 1,730 42 0,6 1,730 48 0,6 1,730 52 0,6 1,732 32 0,6 2,232 46 0,6 2,232 52 0,6 2,234 34 0,6 2,234 55 0,6 2,234 66 0,6 2,236 36 0,7 2,236 58 0,7 2,238 38 0,7 2,238 52 0,7 2,238 62 0,7 2,240 40 0,7 2,240 65 0,7 2,2aNo roller material is allowed to project beyond an ima
46、ginary circular arc, which has a radius rs minin an axial plane and is tangential to the roller face and to the outside surface of the roller.Table 1 (continued) ISO 2012 All rights reserved 9BS ISO 12297:2012ISO 12297:2012(E)6 TolerancesTable 2 gives the tolerances for: deviation from circular form
47、, Rw variation of roller gauge lot diameter, VDwL variation of mean roller diameter, VDwmp surface roughness of the roller outside diameter surface, Ra axial runout with respect to the roller axis, SDwTable 2 Diameter tolerances, roller outside diameter surface roughness and axial runoutTolerance va
48、lues in micrometresGrade RwaVDwLaVDwmpa bSurface roughnessaRaSDwlGDwand roller diameter gaugemax. max. max. max. max. G1 0,5 1,5 0,8 0,1 6The interval of roller diameter gauge and diameter gauge shall be defined subject to agreement between the customer and the supplier.G1A 0,8 2 1,2 0,16 6G2 1 2 1,
49、5 0,16 6G2A 1,3 3 2 0,2 6G3 1,5 3 3 0,3 10G5 2,5 5 4 0,4 15aThe values apply to the cylindrical part of the roller outside diameter surface.bThe values apply to two single planes which are arranged symmetrically to the middle of the roller.7 HardnessThe hardness of cylindrical rollers is given in Table 3.Table 3 Hardness for cylindrical rollerHRC HV58 to 67 (653 to 900)aaValues in parentheses indicate the converted values for informative reference.The hardness shall be the plane hardne
