1、 Rolling bearings Needle rollers Dimensions and tolerances ANSI/ABMA/ISO 3096-2014 Sponsor American Bearing Manufacturers Association ANSI/ABMA/ISO 3096-2014 (Identical Adoption of ISO 3096:1996) Copyright American Bearing Manufacturers Association, Inc. Neither part of the printed publication, nor
2、any part 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
3、of ANSI/ABMA/ISO 3096-2014.) 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
4、for which 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
5、(participating)-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 3096:1996 was prepared by Technical Committee ISO/TC 4, Rolling Bearings. This standard was processed and approved for submittal to ANSI for national
6、 adoption 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 su
7、ggestions should be sent to: ASC B3 Secretariat American Bearing Manufacturers Association 2025 M Street, N.W., Suite 800 Washington, DC 20036 INTERNATIONAL STANDARD IS0 3096 Second edition 1996-l 2-15 Rolling bearings - Needle rollers - Dimensions and tolerances Roulements - Aiguilles - Dimensions
8、et tolkrances This material is reproduced from IS0 documents under International Organization for Standardization (ISO) Copyright License number IHSllCC11996. Not for resale. No part of these IS0 documents may be reproduced in any form, electronic retrieval system or otherwise, except as allowed in
9、the copyright law of the country of use, or with the prior written consent of IS0 (Case postale 56,1211 Geneva 20, Switzerland, Fax +41 22 734 IO 79), IHS or the IS0 Licensers members. Reference number IS0 3096:1996(E) IS0 3096:1996(E) Foreword IS0 (the International Organization for Standardization
10、) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be repr
11、esented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standa
12、rds 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. International Standard IS0 3096 was prepared by Technical Committee ISOK 4, Rolling bearings, Subco
13、mmittee SC 5, Needle roller bearings. This second edition cancels and replaces the first edition (IS0 3096:1974), which has been technically revised. In particular it updates the first edition by defining the symbols used and by establishing tolerances. Annex A of this International Standard is for
14、information only. 0 IS0 1996 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 the publisher. International Organiz
15、ation for Standardization Case Postale 56 l CH-1211 Genbve 20 l Switzerland Printed in Switzerland INTERNATIONAL STANDARD Q IS0 IS0 3096: 1996(E) Rolling bearings - Needle rollers - Dimensions and tolerances 1 Scope This International Standard specifies dimensions and tolerances for finished steel n
16、eedle rollers used as rolling elements. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision,
17、 and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 286-2 :I 988, IS0 system of lim
18、its and fits - Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts. IS0 4291 :1985, Methods for the assessment of departure from roundness - Measurement of variations in radius. 3 Terms, definitions and symbols For the purposes of this International Standard, the fo
19、llowing terms and definitions apply. The symbols (except those for tolerances) shown in figures 1 and 2 and the values given in tables 1 and 3 denote nominal dimensions unless specified otherwise. 3.1 nominal diameter of a needle roller, Dw: Diameter value used for the purpose of general identificat
20、ion of a needle roller diameter. See figures 1 and 2. 3.2 single diameter of a needle roller, D, :Distance between two tangents to the needle roller surface parallel to each other and in a plane perpendicular to the needle roller axis, i.e. a radial plane. 3.3 mean diameter of a needle roller in a s
21、ingle plane, Dwmp: Arithmetical mean of the largest and the smallest actual single diameters of the needle roller in a single radial plane. 3.4 nominal length of a needle roller, I+,: Length value used for the purpose of general identification of a needle roller length. See figures 1 and 2. 1 IS0 30
22、96:1996(E) Q IS0 3.5 single length of a needle roller, IL, s : Distance between the two radial planes which just contain the end extremities of the needle roller. 3.6 single chamfer dimension (of flat end needle roller), rs. See figure 1. 3.7 smallest permissible single chamfer dimension (of flat en
23、d needle roller), rs min. 3.6 largest permissible single chamfer dimension (of flat end needle roller), r, max. 3.9 profile at the ends of rounded end needle rollers, R: Profile which may not necessarily be a true radius but shall fall within the limits of - recommended gauges of needle roller; - ma
24、ximum circularity deviation. In addition, no single diameter within the entire length of a needle roller shall exceed the actual maximum diameter at the middle of its length by more than a) 0,5 pm for grade 2; b) 0,8 pm for grade 3; cl 1 pm for grade 5. 5.2 Length The tolerance on the single length,
25、 IL, for needle rollers of all grades shall be h13, see IS0 286-2. 5.3 Chamfer dimension (see figure 1) Chamfer dimension limits for flat end needle rollers of all grades are specified in table 3 3 IS0 3096: 1996(E) Q IS0 Table 2 - Variation of gauge lot diameter, preferred gauges and circularity de
26、viation Tolerance values in micrometres Grade VDwL max. Needle roller gauges (Upper and lower deviation limits of &,) Maximum circularity deviation 2 upper 0 -1 -2 -3 -4 -5 -6 -7 -8 2 1 lower -2 -3 -4 -5 -6 -7 -8 -9 -10 upper 0 -I,5 -3 -4.5 -6 -7 3 3 I,5 lower -3 -4,5 -6 -7.5 -9 -10 upper 0 -3 -5 5
27、5 2.5 lower -5 -8 -10 NOTES 1 Tolerance values apply only at the middle of the needle roller length. However, each single diameter of a needle roller shall also comply with the requirement of 5.1. 2 If nothing to the contrary is agreed between the customer and the supplier, needle rollers of any nom
28、inal dimensions and any of the quoted grades will be supplied sub-divided into the gauges listed in this table at the discretion of the supplier. Table 3 - Chamfer dimension limits for flat end needle roller Dimensions in millimetre Chamfer dimension limits DW rs min rs max G Directions radial axial
29、 - 1 O,l 0.3 0.5 1 1,5 &I 0.4 006 1,5 3 0.1 0.6 03 3 6 0.1 03 1 NOTE - The chamfer of a needle roller shall clear a fillet radius equal to rs min. 6 Measurement of circularity deviation Circularity deviation shall be measured at the middle of the needle roller length according to a), annex A, of IS0
30、 4291:1985. In practice, it is usually measured by a numerical evaluation of the needle roller circumference, as recorded on a polar chart which shows the measured circumference. 4 0 IS0 Annex A (informative) Bibliography 1 I IS0 1 132 : 1980, Rolling bearings - Tolerances - Definitions. IS0 3096:1996(E) IS0 3096:1996(E) Q IS0 ICS 21.100.20 Descriptors: bearings, rolling bearings, roller bearings, needle bearings, needle rollers, dimensions, dimensional tolerances, metric system. Price based on 5 pages
