1、 Rolling bearings Balls Part 2: Ceramic balls ANSI/ABMA/ISO 3290-2:2014 Sponsor American Bearing Manufacturers Association ANSI/ABMA/ISO 3290-2:2014 (Identical Adoption of ISO 3290-2:2008) Copyright American Bearing Manufacturers Association, Inc. Neither part of the printed publication, nor any par
2、t of the electronic tile may be reproduced or transmitted in any form, including transmittal by e-mail, by file transfer protocol (FTP), or by being made part of a network-accessible system, without the prior written permission of the copyright owner. ABMA FOREWORD (This foreword is not part of ANSI
3、/ABMA/ISO 3290-2:2014.) IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of developing International Standards is carried out through IS0 technical committees. Every member body interested in a subject for w
4、hich a technical committee has been authorized 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. The text is approved as an International Standard if a two-thirds majority of the P (part
5、icipating)-members of the TC/SC are in favor and not more than one-quarter of the total number of votes cast are negative. International Standard 3290-2:2008 was prepared by Technical Committee ISO/TC 4, Rolling Bearings. This standard was processed and approved for submittal to ANSI for national ad
6、option by Accredited Standards Committee B3. Committee approval of the national adoption of this standard does not necessarily mean that all committee members voted for its adoption. Suggestions for the improvement of this standard gained through experience with its use will be welcomed. These sugge
7、stions should be sent to: ASC B3 Secretariat American Bearing Manufacturers Association 2025 M Street, N.W., Suite 800 Washington, DC 20036 Reference numberISO 3290-2:2008(E)ISO 2008INTERNATIONAL STANDARD ISO3290-2First edition2008-12-15Rolling bearings Balls Part 2: Ceramic balls Roulements Billes
8、Partie 2: Billes de roulement en cramique Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional sale or distribution.ISO 3290-2:2008(E) PDF disclaimer This P
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12、T ISO 2008 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 in writing from either ISO at the address below or ISOs member body in
13、 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 2008 All rights reservedCopyright by ISO. Reproduced by ANSI with permission of and under license
14、 from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional sale or distribution.ISO 3290-2:2008(E) ISO 2008 All rights reserved iiiContents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 Symbols .
15、4 5 Requirements 4 5.1 Ball size 4 5.2 Quality of geometry and surface. 4 5.3 Sorting accuracy and ball gauges 5 6 Material 5 7 Dimensions and tolerances . 5 Annex A (normative) Method for assessment of deviation from spherical form 8 Annex B (normative) Illustration of ball gauges and sorting princ
16、iples 9 Annex C (informative) Examples of defect types and methods of inspection. 11 Bibliography . 12 Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional
17、sale or distribution.ISO 3290-2:2008(E) iv ISO 2008 All rights reservedForeword ISO (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 techn
18、ical committees. Each member body interested in a subject for which a technical 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
19、with the International Electrotechnical Commission (IEC) on all matters of 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 In
20、ternational Standards adopted by the technical committees are circulated to the 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
21、may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 3290-2 was prepared by Technical Committee ISO/TC 4, Rolling bearings. ISO 3290 consists of the following parts, under the general title Rolling bearings Balls: Part 1: Steel bal
22、ls Part 2: Ceramic balls Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional sale or distribution.INTERNATIONAL STANDARD ISO 3290-2:2008(E) ISO 2008 All ri
23、ghts reserved 1Rolling bearings Balls Part 2: Ceramic balls 1 Scope This part of ISO 3290 specifies requirements for finished silicon nitride balls for rolling bearings. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refere
24、nces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1132-1, Rolling bearings Tolerances Part 1: Terms and definitions ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method Rul
25、es and procedures for the assessment of surface texture ISO 5593, Rolling bearings Vocabulary ISO/TS 12181-1, Geometrical Product Specifications (GPS) Roundness Part 1: Vocabulary and parameters of roundness ISO 15241, Rolling bearings Symbols for quantities ISO 26602:1)Fine ceramics (advanced ceram
26、ics, advanced technical ceramics) Silicon nitride materials for rolling bearing balls 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 nominal ball diameter diameter value which is used for the general ide
27、ntification of a ball size ISO 5593:1997, 05.04.01 1) To be published. Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional sale or distribution.ISO 3290-2:
28、2008(E) 2 ISO 2008 All rights reserved3.2 single ball diameter distance between two parallel planes tangential to the actual surface of a ball ISO 5593:1997, 05.04.02 3.3 mean ball diameter arithmetical mean of the largest and the smallest of the single diameters of a ball ISO 5593:1997, 05.04.03 3.
29、4 variation of ball diameter difference between the largest and the smallest of the single diameters of a ball ISO 5593:1997, 05.04.04 3.5 deviation from spherical ball surface various types of deviation from the perfect spherical ball surface, uniformly or non-uniformly distributed and repeated aro
30、und the ball surface NOTE The deviations to which limits can be attributed are: deviation from spherical form; waviness; surface roughness; surface defect. 3.5.1 deviation from spherical form radial distance between the smallest circumscribed sphere and the greatest inscribed sphere, with their cent
31、res common to the least squares sphere centre NOTE This definition supersedes ISO 5593:1997, 05.06.03. 3.5.2 waviness surface irregularities of random or periodical deviation from the ideal spherical form NOTE 1 Waviness can be evaluated as velocity amplitude by default. NOTE 2 In practice, the wavi
32、ness components are separated from the real surface by a waviness analyser (filters). 3.5.3 surface roughness surface irregularities with relatively small spacings, which usually include irregularities resulting from the method of manufacture being used and/or other influences NOTE These irregularit
33、ies are considered within the limits that are conventionally defined, e.g., within the limits of the sampling length. 3.5.4 surface defect element, irregularity or group of elements and irregularities of the real surface, unintentionally or accidentally caused during manufacture, storage, handling o
34、r use of the surface Copyright by ISO. Reproduced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional sale or distribution.ISO 3290-2:2008(E) ISO 2008 All rights reserved 3NOTE 1 These
35、 types of element or irregularity differ considerably from those constituting the surface roughness and are not considered during the measurement of the surface roughness. NOTE 2 The limits for surface defects are not specified in this part of ISO 3290. 3.6 ball lot definite quantity of balls manufa
36、ctured under conditions presumed uniform and which is considered as an entity ISO 5593:1997, 05.04.05 3.7 mean diameter of ball lot arithmetical mean of the mean diameters of the largest ball and the smallest ball in a ball lot ISO 5593:1997, 05.04.06 3.8 variation of ball lot diameter difference be
37、tween the mean diameters of the largest ball and the smallest ball in a ball lot ISO 5593:1997, 05.04.07 3.9 ball grade specific combination of dimensional, form, surface roughness and sorting tolerances for balls ISO 5593:1997, 05.04.08 NOTE Ball grade is identified by the letter G and a number, e.
38、g. G 20. 3.10 ball gauge amount by which the mean diameter of ball lot should differ from the nominal ball diameter, this amount being one of an established series ISO 5593:1997, 05.04.09 NOTE 1 Each ball gauge is a whole multiple of the ball gauge interval established for the ball grade in question
39、. NOTE 2 A ball gauge, in combination with the ball grade and nominal diameter, is considered as the most exact ball size specification to be used by a customer for ordering purposes. 3.11 deviation of a ball lot from ball gauge difference between the mean diameter of a ball lot and the sum of the n
40、ominal ball diameter and the ball gauge ISO 5593:1997, 05.04.10 3.12 ball subgauge amount, of an established series of amounts, which is the nearest to the actual deviation from the ball gauge of a ball lot ISO 5593:1997, 05.04.11 NOTE 1 Each ball subgauge is a whole multiple of the ball subgauge in
41、terval established for the ball grade in question. NOTE 2 The ball subgauge, in combination with the nominal ball diameter and the ball gauge, is used by ball manufacturers to denote the mean diameter of a ball lot and is not generally used by customers for ordering purposes. Copyright by ISO. Repro
42、duced by ANSI with permission of and under license from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional sale or distribution.ISO 3290-2:2008(E) 4 ISO 2008 All rights reserved3.13 hardness rolling bearings measure of resistance to
43、penetration as determined by a specific test method NOTE For ceramics balls, such a test method is the Vickers hardness test. 4 Symbols For the purposes of this document, the symbols given in ISO 15241 and the following apply. The symbols (except those for tolerances) and the values given in Tables
44、1 to 3 denote nominal dimensions unless specified otherwise. Dwnominal ball diameter Dwmmean ball diameter DwmLmean diameter of ball lot Dwssingle ball diameter G ball grade S ball gauge VDwLvariation of ball lot diameter VDwsvariation of ball diameter RSwdeviation from spherical form Sdeviation of
45、a ball lot from ball gauge NOTE S= DwmL (Dw+ S) 5 Requirements 5.1 Ball size The preferred nominal ball diameters are given in Table 1 and, where applicable, the corresponding inch sizes are given for reference purposes only. 5.2 Quality of geometry and surface Requirements for: variation of ball di
46、ameter, see Table 2; deviation from spherical form, see Table 2; waviness, see Note 1; surface roughness, see Table 2; surface appearance, see Notes 2 and 3. Measurement of surface roughness shall be carried out in accordance with ISO 4288. Copyright by ISO. Reproduced by ANSI with permission of and
47、 under license from ISO. Licensed to committee members for further standardization only. Downloaded 10/1/2013 1:56 PM. Not for additional sale or distribution.ISO 3290-2:2008(E) ISO 2008 All rights reserved 5NOTE 1 Limits and measuring methods for waviness are subject to agreement between customer a
48、nd supplier. NOTE 2 Local inhomogeneities in colour, densification, pressing defects, snowflakes, etc. and cracks inherent to the material and its processing are subject to agreement between customer and supplier. NOTE 3 Local defects originating from machining and handling are subject to agreement
49、between customer and supplier. 5.3 Sorting accuracy and ball gauges Table 3 comprises the applicable values for: variation of ball lot diameter; gauge interval; preferred gauges; subgauge interval; subgauges. 6 Material The balls shall be manufactured from silicon nitride material in accordance with ISO 26602:. 7 Dimensions and tolerances The preferred nominal ball diameters are given in Table 1. Tolerances for form and surface roughness are given in Tab
