INTERNATIONAL STANDARD IS0 2795 Fourth edition 1991-11-01 Plain bearings and tolerances - Sintered Paliers lisses - Coussinets - frittks - Dimensions - Dimensions et folk-antes - Reference number IS0 27951991 (E) - `,,`,-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS bushes Not for Resale IS0 2795:1991(E) Foreword Draft International 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 International Standard IS0 2795 was prepared by Technical Committee ISO/TC 123, Plain bearings, Sub-Committee SC 3, Dimensions, tolerances and construction details This fourth edition cancels and replaces the (IS0 2795:1986), of which it constitutes a minor revision IS0 1991 All rights reserved No part of this publication may be reproduced or by any means, electronic or mechanlcal, Including photocopying permisslon in writing from the publisher International Organlzation for Standardization Case Postale 56 l CH-1211 Ger&ve 20 l Switzerland Prlnted In Switzerland third edition or utilized in any form and microfilm, without ii Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale `,,`,-`-`,,`,,`,`,,` - IS0 (the International Organization for Standardization) 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 represented 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 IS0 2795:1991(E) Introduction The sizes given in this International Standard are based on a range of shatl diameters which are considered to correspond to the requirements of industry For ail except the smallest sizes, a thin-wail series is provided in addition 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 types of plain bearings `,,`,-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS iii Not for Resale IS0 2795:1991(E) INTERNATIONAL STANDARD Plain bearings tolerances bushes Scope This international Standard specifies the dimensions and tolerances’) applicable to sintered bearings for the following ranges of inside diameters: - Cylindrical bearings: - Flanged bearings: - Spherical bearings: mm to 60 mm - Dimensions IS0 286-2:1988, IS0 system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts IS0 5755-1:1987, Sintered metal materials for cations Part I: Maferials, impregnated with liquid lubricant Normative - Specifibearings, mm to 60 mm mm to 20 mm and Materials references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard At the time of publlcation, the editions indicated were valid All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below Members of IEC and IS0 maintain registers of currently valid International Standards Materials used for manufacturing shall conform to IS0 5755-1 4.1 IS0 286-1:1988, /SO system of limits and fits Parf 1: Bases of tolerances, deviations and fits Cylindrical sintered `,,`,-`-`,,`,,`,`,,` - - Sintered bearings bearings Dimensions See figure and tables and 1) See IS0 286-l and IS0 286-2 for the limit deviations and tolerance grades specified in this International Standard Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale IS0 2795:1991 (E) Table Dimensions Wall thickness D-d Chamfer c up to and above in mllllmetres max Incl 092 053 034 W 097 098 4.2 Figure The tolerances on the bearings after fitting and the tolerances on the housing and insertion pin are given below In addition, tolerances on the inside and outside diameters of the bearing before fitting are given Table Dimensions Inside diameter d Ouklde Normal diameter, series D In mllllmetres Lengthl) Thin seriest) L `,,`,-`-`,,`,,`,`,,` - 1,s 2,5 3 6 l-2 l-2 2-3 2-3 3-4 10 12 14 15 16 18 10 11 12 14 16 16 20 21 22 24 10 II 12 14 16 16 19 ;: 3-4-6 4-5-8 4-6-10 5-E-10 6-E- I2 6-10-14 E-10-16 E- 12-20 10-14-20 lo- 15-25 12-16-25 12-l e-30 20 22 25 26 30 32 35 39 40 42 45 4% 50 55 60 26 29 32 36 38 40 45 49 50 52 55 58 60 65 72 25 27 30 33(34) 35(36) 39 41 44 46 48 51 55 58 63 66 15-20-25-30 15-20-25-30 20-25-30-35 20-25-30-40 20-25-30-40 20-25-30-40 25-35-40-50 25-35-45-55 30-40-50-60 30-40-50-60 35-45-55-65 35-50-70 35-50-70 40-55-70 50-60-70 1) As from inside diameter 20 mm (included), length is not applicable to the thin series, 2) Dimensions In parentheses Tolerances the last value for the shall be used as "2nd choice" NOTE Since the actual tolerances and combinations of tolerances characteristics state depend upon the and the manufacturing methods, they should be discussed with the manufacturer As-delivered: - on outside diameter II: in the ranges r6 to ~7, for D Q 50 mm r7 to s8, for D > 50 mm - on inside diameter d: in the ranges F7 to G7, for D si 50 mm F8 to G8, for I> > 50 mm - on bearing length L: js13 - on coaxiaiity of the outside diameter with respect to the inside surface diameter (tolerance based on the outside diameter, D): t, = IT for D Q 50 mm t2 = IT 10 for D > 50 mm insertion pin: in the range m5 to m6 Housing: H7 Bearing rigid): bore after ntting (assuming H7, for II Q 50 mm H8, for D > 50 mm Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS in the as-delivered of the materials Not for Resale the housing is IS0 2795:1991 (E) Flanged bearings Table Dimensions Inside diameter d 5.1 in milllmetres Length L Normal series Dimensions 1 1,5 I,5 1,5 195 2,5 See figure and tables to 5 a IO 18 :: 12 14 16 18 20 21 22 24 20 22 25 28 30 32 35 38 40 42 45 48 50 55 60 26 28 32 36 38 40 45 48 50 52 55 58 60 65 72 :: 15 16 12 13 14 25 2 :i 22 24 26 27 2x5 ii x 3-4-6 4-5-a 4-6-10 5-e-10 6-8-12 6-10-14 8-10-16 8-12-20 10-14-20 10-15-25 12-16-25 12-18-30 32 34 39 44 3 3,5 4 5 5 5 5 15-20-25-30 15-20-25-30 20-25-30 20-25-30 20-25-30 20-25-30 25-35-40 25-35-45 30-40-50 30-40-50 35-45-55 3550 35-50 40-55 50-60 ; It 55 58 60 62 65 60 70 75 84 3 3 `,,`,-`-`,,`,,`,`,,` - Thin series Figure Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS IO 12 14 15 16 10 14 16 18 19 20 22 18 20 22 23 24 26 2 2 2 8-10-16 8-12-20 10-14-20 10-15-25 12-16-25 12-18-30 20 22 25 25 27 30 30 32 35 2,5 15-20-25 15-20-25 20-25-30 I - 215 2,5 Not for Resale IS0 2795:1991(E) and outside diameters of the bearing flange before fitting are given Table In milllmetres Wall thickness D-d Chamfer C up to and Incl max 02 OS3 characteristics methods, they - 014 096 - %7 on outside diameter - on inside diameter up to and Incl d: in the ranges F7 to G7, for D Q 50 mm F8 to G8, for I> > 50 mm - on bearing length I,: js13 - on r - on flange thickness max - on coaxiality of the outside diameter with respect to the inside surface diameter (tolerance based on the outside diameter, II): Dimensions D D: in the ranges r6 to ~7, for D Q 50 mm r7 to ~8, for D > 50 mm 08 Outside diameter of the materials and the manufacturing should be discussed with the manufacturer As-delivered: Table above NOTE Since the actual tolerances and combinations of tolerances in the as-delivered state depend upon the In mlllimetres I flange diameter II,: js13 e: js13 I, = IT 9, for D Q 50 mm 1, = IT 10, for 11 > 50 mm Insertion pin: in the range m5 to m6 Housing: H7 5.2 Tolerances The tolerances on the bearings after fitting and tht ? tolerances on the housing and insertion pin are given below In addition, tolerances on the inside Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Bearing rigid): bore after fitting (assuming H7, for D Q 50 mm H8, for I) > 50 mm Not for Resale the housing is `,,`,-`-`,,`,,`,`,,` - Dimensions and on the IS0 2795:1991(E) Spherical bearings Table 6.1 Dimensions Dlmenslons In mllllmetres See figure and table Inside Spherical diameter diameter n 4,5 185 Length L C max Of3 23 i 10 i 12 14 16 16 a 10 10 12 14 15 16 18 20 Figure Chamfer IO 11 1: ia ii 1: 22 24 27 15 28 20 20 25 OS5 :; 30 36 6.2 Tolerances NOTE A cylindrical surface is permissible on the sphere at the centre of the bearing length, the diameter of which should be agreed between the user and the manufacturer Inside diameter, Spherical Bearing d: H7 diameter, D,: hll length, 22: js13 Tolerance for the housing diameter should normally be HI0 but this depends on the method of assembly Where an easier tit is preferred for lighter selfalignment, GIO is suggested `,,`,-`-`,,`,,`,`,,` - Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale IS0 2795:1991(E) `,,`,-`-`,,`,,`,`,,` - UDC 621.822.5:621.762.5 Descriptors: hearings, plain bearings, slntered products, dlmenslons, dimensional Price based on paaes Copyright International Organization for Standardization Provided by IHS under license with ISO No reproduction or networking permitted without license from IHS Not for Resale tolerances, ... Resale IS0 2795: 1991( E) INTERNATIONAL STANDARD Plain bearings tolerances bushes Scope This international Standard specifies the dimensions and tolerances ) applicable to sintered bearings for... Parf 1: Bases of tolerances, deviations and fits Cylindrical sintered `,,`,-`-`,,`,,`,`,,` - - Sintered bearings bearings Dimensions See figure and tables and 1) See IS0 286-l and IS0 286-2 for... International Standard IS0 2795 was prepared by Technical Committee ISO/ TC 123, Plain bearings, Sub-Committee SC 3, Dimensions, tolerances and construction details This fourth edition cancels and replaces