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1、 Reference number ISO 1224-1:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 1224-1 First edition 2007-06-15 Rolling bearings Instrument precision bearings Part 1: Boundary dimensions, tolerances and characteristics of metric series bearings Roulements Roulements de prcision pour instruments Partie 1: D
2、imensions dencombrement, tolrances et caractristiques, sries mtriques Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted w
3、ithout license from IHS -,-,- ISO 1224-1:2007(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 be edited unless the typefaces which are embedded are licensed to and installed on the computer p
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6、al Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission
7、in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reserved Co
8、pyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1224-1:2007(E) ISO 2007 All rights res
9、erved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Symbols. 2 5 Characteristics 4 6 Bearing types 4 7 Boundary dimensions 5 8 Tolerances. 7 8.1 Tolerance class 5A . 7 8.2 Tolerance class 4A . 8 9 Radial internal clearance . 9 10 Bore and outside di
10、ameter classification 9 11 Torque test conditions. 9 11.1 General. 9 11.2 Test conditions . 9 11.3 Correlation of test results on different types of test equipment . 10 12 Limitations of bearing yield rates . 10 Copyright International Organization for Standardization Provided by IHS under license w
11、ith ISO Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1224-1:2007(E) iv ISO 2007 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldw
12、ide 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 has the right to be represented on th
13、at 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. International Standards are drafted in
14、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. Publication as an International Standard r
15、equires 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 rights. ISO 1224-1 was prepared by Tec
16、hnical Committee ISO/TC 4, Rolling bearings. This first edition of ISO 1224-1, together with ISO 1224-2, cancels and replaces ISO 1224:1984, which has been technically revised. ISO 1224 consists of the following parts, under the general title Rolling bearings Instrument precision bearings: Part 1: B
17、oundary dimensions, tolerances and characteristics of metric series bearings Part 2: Boundary dimensions, tolerances and characteristics of inch series bearings Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=DAW
18、SON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 1224-1:2007(E) ISO 2007 All rights reserved 1 Rolling bearings Instrument precision bearings Part 1: Boundary dimensions, tolerances and characteristics
19、 of metric series bearings 1 Scope This part of ISO 1224 specifies the characteristics that define instrument precision rolling bearings, metric series, their types, boundary dimensions, tolerances and internal clearance, classifications used for selective assembly, torque definitions and test condi
20、tion, and limitations of bearing yield rates. 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 references, the latest edition of the referenced document (including any a
21、mendments) applies. ISO 15, Rolling bearings Radial bearings Boundary dimensions, general plan ISO 582, Rolling bearings Chamfer dimensions Maximum values ISO 1132-1, Rolling bearings Tolerances Part 1: Terms and definitions ISO 5593:1997, Rolling bearings Vocabulary ISO 15241, Rolling bearings Symb
22、ols for quantities 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 1132-1, ISO 5593 and the following apply. 3.1 perpendicularity of inner ring bore with respect to the face basically cylindrical surface total variation of the relative position, in a
23、 radial direction parallel with the plane tangential to the reference face of the inner ring, of points on the same generatrix of the bore at a distance from the side faces of the ring equal to 1,2 times the largest axial single chamfer dimension 3.2 axial runout of outer ring flange back face of as
24、sembled bearing radial groove ball bearing difference between the largest and the smallest of the axial distances between the back face of the outer ring flange, in different angular positions of this ring, at a radial distance from the outer ring axis equal to half the mean diameter of the flange b
25、ack face, and a point in a fixed position relative to the inner ring NOTE For a measurement to be valid, the inner and outer ring raceways shall be in contact with all the balls. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/11
26、11111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1224-1:2007(E) 2 ISO 2007 All rights reserved 3.3 torque quality torque quality of an instrument ball bearing is a function of average and maximum torques NO
27、TE Maximum torque is most frequently specified for slow speed (near zero) applications and for limited arcs of travel. Where considerable rotation is involved, average torque may be the criterion. 3.4 maximum torque maximum value of torque recorded during any test cycle 3.5 average torque arithmetic
28、 mean value of the torque readings obtained during the test cycle 3.6 test load specified axial load coincident with the axis of rotation of the bearing 4 Symbols For the purposes of this document, the symbols given in ISO 15241 and the following apply. The symbols (except those for tolerances) show
29、n in Figure 1 and the values given in the Tables 1 to 6 denote nominal dimensions unless specified otherwise. B inner ring width C outer ring width C1 outer ring flange width D outside diameter of bearing D1 outside diameter of outer ring flange d bore diameter Kea radial runout of outer ring of ass
30、embled bearing Kia radial runout of inner ring of assembled bearing r chamfer dimension (except where r1 is applicable) rs min smallest single chamfer dimension of r rs max largest single chamfer dimension of r r1 chamfer dimension of front face of angular contact ball bearing inner and outer rings
31、r1s min smallest single chamfer dimension of r1 SD perpendicularity of outer ring outside surface with respect to the face1) Sd perpendicularity of inner ring face with respect to the bore1) Sdr perpendicularity of inner ring bore with respect to the face1) Copyright International Organization for S
32、tandardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1224-1:2007(E) ISO 2007 All rights reserved 3 Sea axial runout of outer ring o
33、f assembled bearing1) Sea1 axial runout of outer ring flange back face of assembled bearing1) Sia axial runout of inner ring of assembled bearing1) VBs variation of inner ring width VCs variation of outer ring width VC1s variation of outer ring flange width VDmp variation of mean outside diameter VD
34、sp variation of outside diameter in a single plane Vdmp variation of mean bore diameter Vdsp variation of bore diameter in a single plane Bs deviation of a single inner ring width Cs deviation of a single outer ring width C1s deviation of a single outer ring flange width Dmp deviation of mean outsid
35、e diameter in a single plane Ds deviation of a single outside diameter D1s deviation of a single outside diameter of outer-ring flange dmp deviation of mean bore diameter in a single plane ds deviation of a single bore diameter 1) For angular contact ball bearings, the back face is the reference fac
36、e. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1224-1:2007(E) 4 ISO 2007 All rig
37、hts reserved a) Single-row deep groove ball bearings b) Angular contact ball bearings a Broken corner. Figure 1 Instrument precision bearing 5 Characteristics Satisfactory performance of instrument precision bearings necessitates that they be produced to special tolerances, as given in Clause 8. In
38、addition, these bearings shall be particularly free from foreign matter and meet one or more specific requirements in the following categories: a) low or uniform torque or both, either at starting or in rotation (this requirement does not apply to bearings with seals); b) smooth running or vibration
39、 limitations; c) limitations of bearing yield rates. Due to the many specialized requirements that exist in instrument applications, specification of these categories should be established only after full agreement between the manufacturer and the customer. 6 Bearing types Single-row deep groove bal
40、l bearings meet the majority of the requirements and may be open or capped, with or without a flanged outer ring. However, for specific applications, angular contact ball bearings, non- separable or with separable inner ring, may be required. Copyright International Organization for Standardization
41、Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 1224-1:2007(E) ISO 2007 All rights reserved 5 7 Boundary dimensions Boundary dimensions for m
42、etric series instrument precision bearings are given in Table 1. Table 1 Metric series bearings Dimensions in millimetres Flanged bearings d D B and C rs mina r1s mina D1 C1 Applicable types of bearing Dimension seriesb 0,6 2 0,8 0,05 0,05 open 17 1 2,5 1 0,05 0,05 open 17 1 3 1 0,05 0,05 3,8 0,3 op
43、en 18 1 3 1,5 0,05 0,05 3,8 0,45 capped 38 1 4 1,6 0,1 0,05 5 0,5 open 19 1 4 2,3 0,1 0,05 5 0,6 capped 39 1,5 3 1 0,05 0,05 open 17 1,5 4 1,2 0,05 0,05 5 0,4 open 18 1,5 4 2 0,05 0,05 5 0,6 capped 38 1,5 5 2 0,15 0,08 6,5 0,6 open 19 1,5 5 2,6 0,15 0,08 6,5 0,8 capped 39 2 4 1,2 0,05 0,05 open 17 2
44、 5 1,5 0,08 0,05 6,1 0,5 open 18 2 5 2,3 0,08 0,05 6,1 0,6 capped 38 2 6 2,3 0,15 0,08 7,5 0,6 open, capped 19 2 6 3 0,15 0,08 7,5 0,8 capped 39 2,5 5 1,5 0,08 0,05 open 17 2,5 6 1,8 0,08 0,05 7,1 0,5 open 18 2,5 6 2,6 0,08 0,05 7,1 0,8 capped 38 2,5 7 2,5 0,15 0,08 8,5 0,7 open, capped 19 2,5 7 3,5
45、 0,15 0,08 8,5 0,9 capped 39 3 6 2 0,08 0,05 open 17 3 7 2 0,1 0,05 8,1 0,5 open 18 3 7 3 0,1 0,05 8,1 0,8 capped 38 3 8 3 0,15 0,08 9,5 0,7 open, capped 19 3 8 4 0,15 0,08 9,5 0,9 capped 39 3 10 4 0,15 0,08 11,5 1 open, capped 02 4 7 2 0,08 0,05 open 17 4 9 2,5 0,1 0,05 10,3 0,6 open 18 4 9 4 0,1 0
46、,05 10,3 1 capped 38 4 11 4 0,15 0,08 12,5 1 open, capped 19 4 13 5 0,2 0,1 15 1 open, capped 0,2 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=DAWSON, DAVIS Not for Resale, 07/03/2007 01:51:29 MDTNo reproducti
47、on or networking permitted without license from IHS -,-,- ISO 1224-1:2007(E) 6 ISO 2007 All rights reserved Table 1 (continued) Dimensions in millimetres d D B and C rs mina r1s mina Flanged bearings Applicable types of bearing Dimension seriesb 4 16 5 0,3 0,15 open, capped 03 5 8 2 0,08 0,05 open 1
48、7 5 11 3 0,15 0,08 12,5 0,8 open 18 5 11 5 0,15 0,08 12,5 1 capped 38 5 13 4 0,2 0,1 15 1 open, capped 19 5 16 5 0,3 0,15 18 1 open, capped 02 5 19 6 0,3 0,15 22 1,5 open, capped 03 6 10 2,5 0,1 0,05 open 17 6 13 3,5 0,15 0,08 15 1 open 18 6 13 5 0,15 0,08 15 1,1 capped 28 6 15 5 0,2 0,1 17 1,2 open, capped 19 6 19 6 0,3 0,15 22 1,5 open, capped 02 7 11 2,5 0,1 0,05 ope