1、BRITISH STANDARD BS4480-6: 1984 ISO6525: 1983 Plain bearings: metric series Part6: Specification for dimensions and tolerances of ring type thrust washers made from strip ISO title: Plain bearings Ring type thrust washers made from strip Dimensions and tolerances UDC621.822.5:621.882.4BS4480-6:1984
2、This British Standard, having beenprepared under the directionof the Mechanical Engineering Standards Committee, was published underthe authority of the Board of BSI and comes intoeffecton 31May1984 BSI08-1999 The following BSI references relate to the work on this standard: Committee reference MEE/
3、119 Draft for comment82/73217 DC ISBN 0 580 13879 8 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Mechanical Engineering Standards Committee (MEE/-) to Technical Committee MEE/119 upon which the following bodies were represented: Assoc
4、iation of Bronze and Brass Founders British Internal Combustion Engine Manufacturers Association British Metal Sinterings Association British Plastics Federation Copper Development Association Department of Trade and Industry (National Engineering Laboratory) Institution of Mechanical Engineers Inte
5、rnational Tin Research Institute London Metal Exchange Motor Cycle Association of Great Britain Plastics and Rubber Institute Society of Motor Manufacturers and Traders Limited Amendments issued since publication Amd. No. Date of issue CommentsBS4480-6:1984 BSI 08-1999 i Contents Page Committees res
6、ponsible Inside front cover National foreword ii 1 Scope and field of application 1 2 Reference 1 3 Definition 1 4 Symbols 1 5 Dimensions and tolerances 1 6 Oil grooves 2 7 Flatness of washer 2 8 Chamfers 2 Figure 1 Thrust washer 1 Figure 2 Typical oil grooves 3 Table Dimensions and tolerances 4 Pub
7、lication referred to Inside back coverBS4480-6:1984 ii BSI 08-1999 National foreword This Part of this British Standard, which has been prepared under the direction of the Mechanical Engineering Standards Committee, is identical with ISO6525:1983 “Plain bearings Ring type thrust washers made from st
8、rip Dimensions and tolerances”, published by the International Organization for Standardization (ISO). The standards in this metric series are as follows: Part1: Sintered bronze bushes; Part2: Solid plastics bushes; Part3: Dimensions and tolerances of solid copper alloy bushes; Part4: Dimensions, to
9、lerances and methods of checking wrapped bushes; Part5: Dimensions, tolerances and methods of checking thin-walled half bearings; Part6: Specification for dimensions and tolerances of ring type thrust washers made from strip; Part7: Specification for dimensions and tolerances of pressed bimetallic h
10、alf thrust washers. Further Parts will be published as the corresponding International Standards become available, subject to approval by the United Kingdom. Terminology and conventions. The text of the International Standard has been approved as suitable for publication as a British Standard withou
11、t deviation. Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following. The comma has been used as a decimal marker. In British Standards it is current practice to use a full point on the baseline as the decimal ma
12、rker. Where the words, “International Standard” appear, referring to this standard, they should be read as “British Standard”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Complian
13、ce with a British Standard does not of itself confer immunity from legal obligations. Cross-reference International Standard Corresponding British Standard ISO3547:1976 BS4480 Plain bearings: metric series Part4:1979 Dimensions, tolerances and methods of checking wrapped bushes (Identical) Summary o
14、f pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover
15、.BS4480-6:1984 BSI 08-1999 1 1 Scope and field of application This International Standard specifies a range of thrust washers for general purpose use with wrapped bushes as specified in ISO3547. It applies to thrust washers having inside diameters from6 to80mm. NOTEIt is not expected that all the si
16、zes listed will be available from stock but adoption of standard sizes should lead to economies in tooling costs. 2 Reference ISO3547, Plain bearings Wrapped bushes Dimensions, tolerances and methods of checking. 3 Definition ring type thrust washer an unsplit ring, normally fitting into a recess in
17、 the end of a housing, which is intended to accept thrust and to provide axial location for a rotating shaft (see Figure 1) the standardized thrust washers are prevented from rotating by a dowel NOTEOther means of location may be provided for special purpose. 4 Symbols 5 Dimensions and tolerances Th
18、e basic dimensions and tolerances for thrust washers are shown in the Table. Dimension D R is equal to D and the tolerance for D Ris G10. Dimension e Ris determined by the possible wear of the thrust washer and by the condition of loading in order to prevent washer escaping out of the recess if the
19、load is reversed. D = outside diameter of the washer d = inside diameter of the washer e T = total washer thickness C = pitch circle diameter for dowel centre F = dowel hole diameter D R = diameter of recess in the housing e R = depth of recess in the housing p = flatness limit Figure 1 Thrust washe
20、rBS4480-6:1984 2 BSI 08-1999 6 Oil grooves By agreement between the user and the manufacturer, oil grooves may be provided. Grooves serve the primary purpose of feeding oil over the flat areas. Sometimes, however, grooves have to be deeper than is necessary for this purpose in order to allow escape
21、of oil from pressure-fed journal bearings. Some typical grooving arrangements are illustrated in Figure 2. NOTE 1When grooves are embossed into bimetallic materials, the depth of groove should preferably be less than the lining thickness. NOTE 2Sharp edges of grooves shall be removed. 7 Flatness of
22、washer It is not possible to specify flatness for thrust washers having oil grooving on the thrust face since the grooving operation causes distortion. In the special case of ungrooved washers, they shall slide between parallel plates set at e Tmax + p where p =0,10mm for up to80mm outside diameter
23、and at p=0,12mm above this diameter. 8 Chamfers All sharp edges shall be removed.BS4480-6:1984 BSI 08-1999 3 Figure 2 Typical oil groovesBS4480-6:1984 4 BSI 08-1999 Table Dimensions and tolerances Dimensions in millimetres Nominal bush housing diameter Inside diameter, d Outside diameter, D Thicknes
24、s, e T Pitch circle diameter, C Dowel hole diameter, F preferred non-preferred 0,15 6 7 8 9 10 6 7 8 9 10 16 17 18 19 22 1,00 1,00 1,00 1,00 1,00 11 12 13 14 16 1,5 1,5 1,5 1,5 1,5 11 12 12 12 24 24 1,50 1,50 18 18 1,5 1,5 13 14 14 14 26 26 1,50 1,50 20 20 2,0 2,0 15 16 16 16 30 30 1,50 1,50 23 23 2
25、,0 2,0 17 18 18 18 32 32 1,50 1,50 25 25 2,0 2,0 19 20 20 20 36 36 1,50 1,50 28 28 3,0 3,0 21 22 22 22 38 38 1,50 1,50 30 30 3,0 3,0 24 23 24 24 42 42 1,50 1,50 33 33 3,0 3,0 25 26 26 26 44 44 1,50 1,50 35 35 3,0 3,0 28 27 28 28 48 48 1,50 1,50 39 39 4,0 4,0 30 32 32 32 54 54 1,50 1,50 43 43 4,0 4,0
26、 34 36 36 36 60 60 1,50 1,50 48 48 4,0 4,0 38 40 39 40 40 40 64 64 64 1,50 1,50 1,50 52 52 52 4,0 4,0 4,0 42 45 44 45 45 45 70 70 70 1,50 1,50 1,50 57,5 57,5 57,5 4,0 4,0 4,0 48 50 50 50 76 76 2,00 2,00 63 63 4,0 4,0 53 55 55 55 80 80 2,00 2,00 67,5 67,5 5,0 5,0 56 60 57 60 60 60 90 90 90 2,00 2,00
27、2,00 75 75 75 5,0 5,0 5,0 63 65 65 65 100 100 2,00 2,00 83,5 83,5 5,0 5,0 67 70 70 70 105 105 2,00 2,00 88 88 5,0 5,0 71 75 75 75 110 110 2,00 2,00 92,5 92,5 5,0 5,0 80 80 120 2,00 100 5,0 +0,25 0 0 0,25 0 0,05 +0,40 +0,10BS4480-6:1984 BSI 08-1999 Publication referred to See national foreword.BS4480
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