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1、BRITISH STANDARD BS 3092:1973 Specification for Main friction clutches, main power-take-off assemblies and associated attachments for internal combustion engines UDC 621.43 23:621.82/.83 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 05:40:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 309
2、2:1973 This British Standard, having been approved by the Mechanical Engineering Industry Standards Committee, was published under the authority of the Executive Board on 28 February 1973 BSI 02-2000 First published February 1959 First revision February 1973 The following BSI references relate to th
3、e work on this standard: Committee reference MEE/137, MEE/137/2 Draft for comment 71/30098 ISBN 0 580 07563 X Co-operating organizations The Mechanical Engineering Industry Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following
4、 Government departments and scientific and industrial organizations: The Government department and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British
5、 Standard: Associated Offices Technical CommitteeEngineering Equipment Users Association Association of Consulting EngineersGas Council Association of Hydraulic EquipmentInstitution of Civil Engineers Manufacturers Ltd.*Institution of Gas Engineers Association of Mining Electrical andInstitution of
6、Heating and Ventilating Mechanical EngineersEngineers British Compressed Air SocietyInstitution of Mechanical Engineers* British Electrical and Allied ManufacturersInstitution of Mechanical Engineers Association(Automobile Division) British Gear Manufacturers AssociationInstitution of Plant Engineer
7、s British Internal Combustion EngineInstitution of Production Engineers Manufacturers Association*Locomotive and Allied Manufacturers British Mechanical Engineering ConfederationAssociation of Great Britain British Pump Manufacturers AssociationLondon Transport Executive British Steel IndustryMachin
8、e Tool Trades Association Crown Agents for Oversea Governments andMinistry of Defence AdministrationsMinistry of Defence, Army Department* Department of Employment (H.M. FactoryNational Coal Board Inspectorate)National Physical Laboratory (Department of Department of the EnvironmentTrade and Industr
9、y) Department of Trade and IndustryProcess Plant Association Department of Trade and Industry NationalRoyal Institute of British Architects Engineering LaboratoryTelecommunications Engineering Electricity Council, The Central ElectricityManufacturing Association Generating Board and the Area Boards
10、inWater Tube Boilermakers Association England and Wales Diesel Engineers and Users AssociationIndividual manufacturers Society of Motor Manufacturers and Traders Ltd. Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 05:40:43 GMT
11、+00:00 2006, Uncontrolled Copy, (c) BSI BS 3092:1973 BSI 02-2000i Contents Page Co-operating organizationsInside front cover Forewordiii 1General1 2Main clutches2 3Main power-take-off assemblies3 4Flywheel-spigoted couplings3 5Housings4 Figure 1 Spline details4 Figure 2 Dowels and dowel holes5 Figur
12、e 3 Single plate, coil spring-engaged clutches (flat face, equally spaced fixing holes and dowel location)6 Figure 4 Flywheels for coil spring engaged clutches (flat face, equally spaced fixing holes and dowel location)7 Figure 5 Single plate coil spring-engaged clutches (flat face, unequally spaced
13、 fixing holes and dowel location)8 Figure 6 Flywheels for coil spring-engaged clutches (flat face, unequally spaced fixing holes and dowel location)9 Figure 7 Single plate coil spring-engaged clutches inset face, equally spaced fixing holes (8 & 12) and dowel location10 Figure 8 Flywheels for coil s
14、pring-engaged clutches (inset face, equally spaced fixing holes and dowel location)11 Figure 9 Single plate, coil spring-engaged clutches (inset face, equally spaced fixing holes and spigot location)13 Figure 10 Flywheels for coil spring-engaged clutches (inset face, equally spaced fixing holes and
15、spigot location)14 Figure 11a Diaphragm spring clutches 61/2, 71/2, 81/2, 91/2 and 101/2 inch sizes15 Figure 11b Diaphragm spring clutches 12, 13, 14 and 15 inch sizes16 Figure 12 Flywheel for 61/2 inch diameter diaphragm spring clutch (flat face, unequally spaced fixing holes and dowel location)18
16、Figure 13 Flywheels for 71/2, 81/2, 91/2 and 101/2 inch diameter diaphragm spring clutches (flat face, equally spaced fixing holes and dowel location)19 Figure 14 Flywheels for 12 and 13 inch diameter diaphragm spring clutches (flat face, unequally spaced fixing holes and dowel location)20 Figure 15
17、 Flywheels for 14 and 15 inch diameter diaphragm spring clutches (inset face, equally spaced fixing holes and dowel location)21 Figure 16 (Flat face)22 Figure 17 (Inset face)22 Figure 18 Friction plate cam-operated clutches23 Figure 19 Flywheels for friction plate, cam-operated clutches24 Figure 20
18、Power-take-off assemblies (single and multi-plate)25 Figure 21 Flywheels for power-take-off assemblies (single and multi-plate)27 Figure 22 Flywheels for flywheel-spigoted couplings and industrial clutches30 Figure 23 Mating spigots for direct flywheel mounted clutches and flywheel-spigoted coupling
19、s32 Figure 24 Engine flywheel housings33 Figure 25 Clutch housings34 Table A Flywheel data2 Table 1 Spline details4 Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 05:40:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3092:1973 ii BSI 02-2000 Page Table 2a Dimensions of dowels and dowel hole
20、s: coil spring clutches5 Table 2b Dimensions of dowels and dowel holes: diaphragm spring clutches5 Table 3 Dimensions of single plate coil spring-engaged clutches (flat face, equally spaced fixing holes and dowel location)6 Table 4 Dimensions of flywheels for coil spring-engaged clutches (flat face,
21、 equally spaced fixing holes and dowel location)7 Table 5 Dimensions of single plate coil spring-engaged clutches (flat-face, unequally spaced fixing holes and dowel location)8 Table 6 Dimensions of flywheels for coil spring-engaged clutches (flat face, unequally spaced fixing holes and dowel locati
22、on)9 Table 7 Dimensions of single plate coil spring-engaged clutches (inset face, equally spaced fixing holes and dowel location)12 Table 8 Dimensions of flywheels for coil spring-engaged clutches (inset face, equally spaced fixing holes and dowel location)12 Table 9 Dimensions of single plate coil
23、spring-engaged clutches (inset face, equally spaced fixing holes and spigot location)13 Table 10 Dimensions for flywheels for coil spring-engaged clutches (inset face, equally spaced fixing holes and spigot location)14 Table 11 Dimensions of diaphragm spring clutches17 Table 12 Dimensions of flywhee
24、ls for 61/2 inch diameter diaphragm spring clutch (flat face, unequally spaced fixing holes and dowel location)18 Table 13 Dimensions of flywheels for 71/2, 81/2, 91/2 and 101/2 inch diameter diaphragm spring clutches (flat face, equally spaced fixing holes and dowel location)19 Table 14 Dimensions
25、of flywheels for 12 and 13 inch diameter diaphragm spring clutches (flat face, unequally spaced fixing holes and dowel location)20 Table 15 Dimensions of flywheels for 14 and 15 inch diameter diaphragm spring clutches (inset face, equally spaced fixing holes and dowel location)21 Table 16 Additional
26、 dimensions for multi-plate, coil spring-engaged and cam-operated clutches (flat face)22 Table 17 Additional dimensions for multi-plate, coil spring-engaged and cam-operated clutches (inset face)22 Table 18 Dimensions of friction plate cam-operated clutches23 Table 19 Dimensions of flywheels for fri
27、ction plate cam-operated clutches24 Table 20 Dimensions of power-take-off assemblies (single and multi-plate)26 Table 21 Dimensions of flywheels for power-take-off assemblies (single and multi-plate)28 Table 22 Dimensions of flywheels for flywheel-spigoted couplings and industrial clutches29 Table 2
28、3 Mating spigot dimensions for direct flywheel mounted clutches and flywheel-spigoted couplings31 Table 24 Dimensions of engine flywheel housings33 Table 25 Dimensions of clutch housings34 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 05:40:43 GMT+0
29、0:00 2006, Uncontrolled Copy, (c) BSI BS 3092:1973 BSI 02-2000iii Foreword This British Standard has been prepared under the authority of the Mechanical Engineering Industry Standards Committee to facilitate the production and interchange of main friction clutches, main power-take-off assemblies and
30、 associated attachments for internal combustion engines, excluding aircraft engines. In general, dimensions specified are based on those of components in current use, but in certain instances they have been adjusted to suit applicable standard practice. The need for interchangeability has necessitat
31、ed consideration of current American practice and where necessary, for instance on flywheel housings, clutch housing spigots, clutch splines, main power-take-off assemblies and cam-operated friction plate clutches, certain American Standard dimensions have been adopted. The principal changes in this
32、 revision of BS 3092:1959 include the up-dated dimensions for single and multi-plate coil spring operated clutches and the introduction of details of diaphragm spring clutches. Because the identification code for clutches is no longer used, reference to it in the tables has been deleted. This standa
33、rd does not specify dimensions for shaft couplings of rigid and flexible types, neither does it specify dimensions for flywheel attachments to crankshafts. Automatic transmissions are not included. NOTEWhere metric equivalents are given the figures in imperial units are to be regarded as the standar
34、d. The metric conversions are approximate. More accurate conversions should be based on BS 2856, “Precise metric conversions of inch and metric sizes on engineering drawings”. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are re
35、sponsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pages 1 to 34, an inside back cover and a back cover. This standard has
36、 been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 05:40:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv blank Licensed Copy: sheffieldun sheffie
37、ldun, na, Wed Nov 29 05:40:43 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 3092:1973 BSI 02-20001 1 General 1.1 Scope This British Standard specifies envelope, attachment and certain other dimensions of flywheel-mounted main drive components for internal combustion engines (excluding aircraft engin
38、es). In Section 5, “Housings”, only dimensions relevant to the mating of the components are specified. NOTEThe titles of the British Standards referred to in this standard are listed on the inside back cover. 1.2 Splines Splines for clutch hubs shall be as specified in Figure 1 and Table 1. For spli
39、ned hubs of driven plates above 7 in nominal diameter, two sizes of splines are specified for each size of certain clutches to cater for light and heavy duty uses. Subsequent to the publication of BS 3550, a suitable range of involute splines may be used as an alternative to the 10 spline series now
40、 specified. 1.3 Spigot (pilot) bearings The nominal dimensions for spigot (pilot) bearings specified in this standard (which may be located in flywheels, crankshafts or separate housings), are those for single-row ball or roller bearings which conform to BS 292. NOTEWhen other types of bearings are
41、used, it is recommended that in the interest of interchangeability their bores be such as to accommodate clutch-shaft spigots made to suit the specified ball or roller bearings. It is recommended that, in order to accept the greater length of spigot needed for plain type bearings, flywheels and cran
42、kshafts of engines using spring-engaged clutches up to and including 10 in nominal diameter be machined to accommodate a bearing 21/2 times the width of those ball and roller bearings specified in the relevant tables of this standard. 1.4 Dowels Dimensions of stepped dowels shall be as specified in
43、Figure 2 and Table 2a and Table 2b, to ensure: 1) Positive retention of the dowels in the flywheel when the clutch cover is in position. 2) Asymmetrical assembly of clutch to flywheel. Flywheels shall be balanced with dowels in situ. When measured on the assembled engine, clutch dowels shall be co-a
44、xial and equidistant from the crankshaft centre line within 0.004 in. 1.5 Tolerances In order to ensure interchangeability and correct functioning, tolerances shall be as shown in the relevant tables. Tolerances specified in BS 1916 have been incorporated wherever their use would not preclude interc
45、hangeability between US and UK products. The eccentricity and deviation from squareness of the parts listed in Table A, when measured relative to the crankshaft centre-line, shall not exceed the values specified in Table A. Licensed Copy: sheffieldun sheffieldun, na, Wed Nov 29 05:40:43 GMT+00:00 20
46、06, Uncontrolled Copy, (c) BSI BS 3092:1973 2 BSI 02-2000 Table A Flywheel data 2 Main clutches 2.1 Friction plate spring-engaged single plate clutches The envelope and attachment dimensions for friction plate spring-engaged single plate clutches and the relevant flywheel dimensions shall be as give
47、n in the following tables and figures: Table 3, Figure 3 Single plate coil spring-engaged clutches (flat face, equally spaced fixing holes and dowel location). Table 4, Figure 4 Flywheels for coil spring-engaged clutches (flat face, equally spaced fixing holes and dowel location). Table 5, Figure 5
48、Single plate coil spring-engaged clutches (flat face, unequally spaced fixing holes and dowel location). Table 6, Figure 6 Flywheels for coil spring-engaged clutches (flat face, unequally spaced fixing holes and dowel location). Table 7, Figure 7 Single plate coil spring-engaged clutches (inset face
49、, equally spaced fixing holes and dowel location). Table 8, Figure 8 Flywheels for coil spring-engaged clutches (inset face, equally spaced fixing holes and dowel location). Table 9, Figure 9 Single plate coil spring-engaged clutches (inset face, equally spaced fixing holes and spigot location). Table 10, Figure 10 Flywheels for coil spring-engaged clutches (inset face, equally spaced fixing holes and spigot location). Table 11, Figure 11 Diaphragm spring clu