ISO 2795-2014 Plain bearings - Sintered bushes - Dimensions and tolerances《滑动轴承 烧结轴套 尺寸和公差》.pdf

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1、 ISO 2014 Plain bearings Sintered bushes Dimensions and tolerances Paliers lisses Coussinets fritts Dimensions et tolrances INTERNATIONAL STANDARD ISO 2795 Fifth edition 2014-01-15 Reference number ISO 2795:2014(E) ISO 2795:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014

2、 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requeste

3、d 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 ISO 2795:2014(E) ISO 2014 All rights reserv

4、ed iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative reference . 1 3 Material 1 4 Cylindrical bearings 1 4.1 Dimensions . 1 4.2 Tolerances . 3 5 Flanged bearings 4 5.1 Dimensions . 4 5.2 Tolerances . 6 6 Spherical bearings 7 6.1 Dimensions . 7 6.2 Tolerances . 7 Bibliography 9 ISO

5、 2795:2014(E) Foreword 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 technical committees. Each member body interested in a subject

6、 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 with the International Electrotechnical Commission (IEC)

7、on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be not

8、ed. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives. 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

9、or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received. www.iso.org/patents. Any trade name used in this document is information given for the convenience of users an

10、d does not constitute an endorsement. The committee responsible for this document is ISO/TC 123, Plain bearings , Subcommittee SC 7, Special types of plain bearings. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about

11、 ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: http:/ /www.iso.org/iso/home/standards_development/resources-for- technical-work/foreword.htm This fifth edition cancels and replaces the fourth edition (ISO 2795:1991), of which it constitutes a mi

12、nor revision.iv ISO 2014 All rights reserved ISO 2795:2014(E) Introduction The sizes given in this International Standard are based on a range of shaft diameters which are considered to correspond to the requirements of industry. For all except the smallest sizes, a thin-wall series is provided in a

13、ddition to the normal series in order to introduce an element of choice and, more importantly, to provide for the possibility of the same sizes being adopted for plain bearings made from other materials. It is envisaged that as far as possible, the same outside diameters will be recommended for all

14、types of plain bearings. ISO 2014 All rights reserved v Plain bearings Sintered bushes Dimensions and tolerances 1 Scope This International Standard specifies the dimensions and tolerances applicable to sintered bearings for the following ranges of inside diameters: cylindrical bearings: 1 mm to 60

15、mm; flanged bearings: 1 mm to 60 mm; spherical bearings: 1 mm to 20 mm. 2 Normative reference The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated referen

16、ces, the latest edition of the referenced document (including any amendments) applies. ISO 5755, Sintered metal materials Specifications 3 Material The following materials used for manufacturing sintered bearings shall conform to ISO 5755. 4 Cylindrical bearings 4.1 Dimensions See Figure 1 and Table

17、s 1 and 2. Figure 1 INTERNATIONAL ST ANDARD ISO 2795:2014(E) ISO 2014 All rights reserved 1 ISO 2795:2014(E) Table 1 Dimensions in millimetres Inside diameter d Outside diameter, D Length b L Normal series Thin-wall series a 1 3 1-2 1,5 4 1-2 2 5 2-3 2,5 6 2-3 3 6 5 3-4 4 8 7 3-4-6 5 9 8 4-5-8 6 10

18、9 4-6-10 7 11 10 5-8-10 8 12 11 6-8-12 9 14 12 6-10-14 10 16 14 8-10-16 12 18 16 8-12-20 14 20 18 10-14-20 15 21 19 10-15-25 16 22 20 12-16-25 18 24 22 12-18-30 20 26 25 15-20-25-30 22 28 27 15-20-25-30 25 32 30 20-25-30-35 28 36 33 (34) 20-25-30-40 30 38 35 (36) 20-25-30-40 32 40 38 20-25-30-40 35

19、45 41 25-35-40-50 38 48 44 25-35-45-55 40 50 46 30-40-50-60 42 52 48 30-40-50-60 45 55 51 35-45-55-65 48 58 55 35-50-70 50 60 58 35-50-70 55 65 63 40-55-70 60 72 68 50-60-70 aFor inside diameter 20 mm (included), the last value for the length is not applicable to the thin-wall series. bDimensions in

20、 parentheses shall be used as “second choice”.2 ISO 2014 All rights reserved ISO 2795:2014(E) Table 2 Dimensions in millimetres Wall thickness 2 Chamfer C above up to and incl. max. 1 0,2 1 2 0,3 2 3 0,4 3 4 0,6 4 5 0,7 5 0,8 4.2 Tolerances The tolerances for the bearings after fitting and the toler

21、ances for the housing and insertion pin are given below. In addition, the tolerances for the inside and outside diameters of the bearing before fitting are given. NOTE Since the actual tolerances and combinations of tolerances in the as-delivered state depend upon the characteristics of the material

22、s and the manufacturing methods, they should be discussed with the manufacturer. As-delivered: on outside diameter D: in the ranges r6 to s7, for D 50 mm r7 to s8, for D 50 mm on inside diameter d: in the ranges F7 to G7, for D 50 mm F8 to G8, for D 50 mm on bearing length L: js13 on coaxiality of t

23、he outside diameter with respect to the inside surface diameter (tolerance based on the outside diameter, D): t 1= IT9, for D 50 mm t 2= IT10, for D 50 mm Insertion pin: in the range m5 to m6 Housing: H7 Bearing bore after fitting (assuming the housing is rigid): H7, for D 50 mm H8, for D 50 mm ISO

24、2014 All rights reserved 3 ISO 2795:2014(E) 5 Flanged bearings 5.1 Dimensions See Figure 2 and Tables 3 to 5. Figure 2 Table 3 Dimensions in millimetres Inside diameter d Outside diameter D Flange diameter Flange thickness Length L D fl e Normal series 1 3 5 1 2 1,5 4 6 1 2 2 5 8 1,5 3 2,5 6 9 1,5 3

25、 3 6 9 1,5 4 4 8 12 2 3-4-6 5 9 13 2 4-5-8 6 10 14 2 4-6-10 7 11 15 2 5-8-10 8 12 16 2 6-8-12 9 14 19 2,5 6-10-14 10 16 22 3 8-10-16 12 18 24 3 8-12-20 14 20 26 3 10-14-20 15 21 27 3 10-15-25 16 22 28 3 12-16-25 18 24 30 3 12-18-30 20 26 32 3 15-20-25-30 22 28 34 3 15-20-25-30 25 32 39 3,5 20-25-30

26、28 36 44 4 20-25-304 ISO 2014 All rights reserved ISO 2795:2014(E) Inside diameter d Outside diameter D Flange diameter Flange thickness Length L D fl e Normal series 30 38 46 4 20-25-30 32 40 48 4 20-25-30 35 45 55 5 25-35-40 38 48 58 5 25-35-45 40 50 60 5 30-40-50 42 52 62 5 30-40-50 45 55 65 5 35

27、-45-55 48 58 68 5 35-50 50 60 70 5 35-50 55 65 75 5 40-55 60 72 84 6 50-60 Thin-wall series 10 14 18 2 8-10-16 12 16 20 2 8-12-20 14 18 22 2 10-14-20 15 19 23 2 10-15-25 16 20 24 2 12-16-25 18 22 26 2 12-18-30 20 25 30 2,5 15-20-25 22 27 32 2,5 15-20-25 25 30 35 2,5 20-25-30 Table 4 Dimensions in mi

28、llimetres Wall thickness 2 Chamfer C above up to and incl. max. 1 0,2 1 2 0,3 2 3 0,4 3 4 0,6 4 5 0,7 5 0,8Table 3 ISO 2014 All rights reserved 5 ISO 2795:2014(E) Table 5 Dimensions in millimetres Outside diameter D r above up to and incl. max. 12 0,3 12 30 0,6 30 0,8 5.2 Tolerances The tolerances f

29、or the bearings after fitting and the tolerances for the housing and insertion pin are given below. In addition, the tolerances for the inside and outside diameters of the bearing and on the flange before fitting are given. NOTE Since the actual tolerances and combinations of tolerances in the as-de

30、livered state depend upon the characteristics of the materials and the manufacturing methods, they should be discussed with the manufacturer. As-delivered: on outside diameter D: in the ranges r6 to s7, for D 50 mm r7 to s8, for D 50 mm on inside diameter d: in the ranges F7 to G7, for D 50 mm F8 to

31、 G8, for D 50 mm on bearing length L: js13 on flange diameter D fl : js13 on flange thickness e: js13 on coaxiality of the outside diameter with respect to the inside surface diameter (tolerance based on the outside diameter, D): t 1= IT9, for D 50 mm t 2= IT10, for D 50 mm Insertion pin: in the ran

32、ge m5 to m6 Housing: H7 Bearing bore after fitting (assuming the housing is rigid): H7, for D 50 mm H8, for D 50 mm6 ISO 2014 All rights reserved ISO 2795:2014(E) 6 Spherical bearings 6.1 Dimensions See Figure 3 and Table 6. Figure 3 NOTE A cylindrical surface is permissible on the sphere at the cen

33、tre of the bearing length, the diameter of which should be agreed upon by the user and the manufacturer. Table 6 Dimensions in millimetres Inside diameter d Spherical diameter D S Length L Chamfer C max. 1 3 2 0,3 1,5 4,5 3 2 5 3 2,5 6 4 3 8 6 4 10 8 5 12 9 0,5 6 14 10 7 16 11 8 16 11 9 18 12 10 20

34、13 10 22 14 12 22 15 14 24 17 15 27 20 16 28 20 18 30 20 20 36 25 6.2 Tolerances ISO 2014 All rights reserved 7 ISO 2795:2014(E) a) Inside diameter, d: H7 b) Spherical diameter, D s : h11 c) Bearing length, L: js13 Tolerance for the housing diameter should normally be H10 but this depends on the met

35、hod of assembly. Where an easier fit is preferred for lighter self-alignment, G10 is suggested.8 ISO 2014 All rights reserved ISO 2795:2014(E) Bibliography 1 ISO 286-1, Geometrical product specifications (GPS) ISO code system for tolerances on linear sizes Part 1: Basis of tolerances, deviations and

36、 fits 2 ISO 286-2, 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 2014 All rights reserved 9 ISO 2795:2014(E) ISO 2014 All rights reserved IC S 21.100.10 Price based on 9 pages