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1、INTERNATIONAL STANDARD IS0 11055 First edition 1996-l 2-l 5 Flywheels for reciprocating internal combustion engines - Installation dimensions for clutches Volant moteur pour moteur alternatif B combustion inteme - Dimensions dinstallation des embrayages This material is reproduced from IS0 documents
2、 under International Organization for Standardization (ISO) Copyright License number IHSIICC11996. Not for resale. No part of these IS0 documents may be reproduced in any form, electronic retrieval system or otherwise, except as allowed in the copyright law of the country of use, or with the prior w
3、ritten consent of IS0 (Case postale 56,121l Geneva 20, Switzerland, Fax +41 22 734 10 79), IHS or the IS0 Licensers members. Reference number IS0 11055:1996(E) IS0 11055:1996(E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (
4、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, go
5、vernmental 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 Standards adopted by the technical committees are circulated to
6、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 11055 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 15, interchangeability of components of commer
7、cial vehicles and buses. Annex A of this International Standard is for 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, Muding photocopying and microfilm, wit
8、hout permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii -,-,- INTERNATIONAL STANDARD 0 IS0 IS0 11055:1996(E) Flywheels for reciprocating internal combustion engines - Installation dimens
9、ions for clutches 1 Scope This International Standard specifies the nominal dimensions and tolerances which affect the interchangeability between flywheels and spring-loaded single- or two-plate clutches. The flywheels are for use on reciprocating internal combustion engines in conjunction with flyw
10、heel housings and clutch housings which are dealt with in IS0 7648ftj and IS0 7649121. Dimensions and tolerances not specified are left to the discretion of the component manufacturer. This International Standard applies to reciprocating internal combustion engines, with the exception of engines for
11、 aircraft and passenger cars; it may be used for other engine applications where no specific International Standard exists. NOTE - It is recognized that the dimensions shown in this International Standard may not be suitable for some designs in use at present, but they should be used for all new des
12、igns as a means of achieving rationalization in the future. 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
13、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. IS0 286-2:198
14、8, IS0 system of limits and fits - Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts. IS0 1101: 1983, Technical drawings - Geometrical tolerancing - Tolerancing of form, orientation, location and run- out - Generalities, definitions, symbols, indications on drawin
15、gs. 3 Flywheel types and specifications This International Standard defines two types of flywheel: - flat type see figure 1 a); - pot type see figure 1 bll. IS0 11055:1996(E) 0 IS0 Both types are specified for clutch centring either by spigot or dowels. Dowel holes are specified on the same pitch ci
16、rcle diameter as tapped holes. For dimensions and tolerances in figure 1, see tables 1 and 2. For definitions and symbols for geometrical tolerances, see IS0 1101. 4 Tapped holes and dowels Any variation in tapped hole or dowel pattern and/or size shall be subject to agreement between engine manufac
17、turers and clutch suppliers, including the eventuality of stepped dowels being required. Dimensions in milltmetres Ol f IYt- a) Flat type Friction face Friction face b) Pot type _ Friction face c) Dimension X and frlctlon face run-out db Detail W Figure 1 - Flywheels 2 -,-,- Sizes by type designatio
18、n Tapped holes Dowels A 1) B 2) c D E L M G 3) J 4) x315) t r Flat Pot For For tvpe type No. position, No. position, + 0,08 see figure see figure 0 h8 6) nom. min. 250 165 310 290 6 2 3 8 0,159 265 165 325 305 6 2 3 3 8 0,166 280 - 175 340 320 - 5 6 M8 2 8 3 - 8 0,174 310 185 365 345 12 4 4 10 0,189
19、 330 195 390 370 12 4 4 66.5 12 CJ) 0.2 350 350 200 395 375 360 6 M8 2,3or4 8 38 14 0,205 380 380 2007 43581 4108) 390 6 Ml0 10 40 16 0,22 395 395 215 435 410 405 6 12 Ml0 4 or 5 10 4 40 16 0,23 400 400 215 10) 450 418 - 8 Ml0 - - - 18 0,23 430 430 235“) 475 450 440 8 Ml0 2,3or4 10 40 18 0,245 1 I D
20、imension A is for guidance only and will depend on future development. 21 Dimension B applies only when a spigot location is required. It does not apply when dowels are used for location purposes. 3) In certain cases, dependrng on the position of the release bearing, dimension G can be reduced, subj
21、ect to agreement between engine manufacturer and clutch supplier; this question will be considered in the future. Also, dependrng upon the design of the clutch torsional damper, dimension X mtn. can be increased or reduced, subject to agreement between engine manufacturer and clutch supplier; this q
22、uestion will also be considered in the future. 4) Dimension J can be 48 mm for size designation 430. 51 The X min. dimensron is given for guidance and is intended to ensure clearance between the clutch torsional damper in the fully worn condrtion of the driven plate and the heads of the flywheel/cra
23、nkshaft fixing screws. As the PCD (Pitch Circle Diameter) of the latter is not specified and there are no envelope dimensions stated for clutches, this dimension permits installation and subsequent clutch plate wear without fouling. 6) See IS0 286-2. 7) 215 for engtne torques above 750 N.m. 8) These
24、 dimensions are reduced when using flywheel housing size code 3 with cast iron clutch covers. 0,013D 9) t=- 254 where, D is the diameter of measurements: -for figure 1 a), D is between A and B; -for figure 1 b). D is between D and B. 101 235 for engine torques above 1 200 N,m. Ill 258 for engine tor
25、ques above 2 200 N,m. -,-,- IS0 11055:1996(E) Table 2 - Flywheels for two-plate clutches - Flat type IS0 Dimensions in millimetres Tapped holes A 1) B 2) C E /I. G 3) x 3) 4) Size No. For position, + 0.08 0 see figure min. 310 185 370 350 5 12 M8 4 or 5 66,5 10 350 200 395 5) 375 5) 6 12 M8 or Ml0 6
26、) 4 or 5 66,5 14 380 200 or 215 440 410 6 12 Ml0 or Ml261 4 or 5 66.5 16 400 235 470 450 8 12 Ml0 4 or 5 66,5 18 1) Dimension A is for guidance only and will depend on future development. 2) Dimension B applies only when a spigot location is required. It does not apply when dowels are used for locat
27、ion purposes. 3) In certain cases, depending on the position of the bearing, dimension G can be reduced, subject to agreement between engine manufacturer and clutch supplier; this question will be considered in the future. Also, depending upon the design of the clutch torsional damper, dimension X m
28、in. can be increased or reduced, subject to agreement between engine manufacturer and clutch supplier; this question will also be considered in the future. 4) The X min. dimension is given for guidance and is intended to ensure clearance between the clutch torsional damper in the fully worn conditio
29、n of the driven plate and the heads to the flywheel/crankshaft fixing screws. As the PCD (Pitch Circle Diameter) of the latter is not specified and there are no envelope dimensions stated for clutches, this dimension permits installation and subsequent clutch plate wear without fouling. 5) These dim
30、ensions are reduced when using flywheel housing size code 3 with cast iron clutch covers. 5) The thread size depends on the engine torque. 4.1 Tapped holes The number and sizes for tapped holes shall be as given in tables 1 and 2. The tapped holes shall be equally spaced as shown in figures 2 to 6.
31、Positional tolerances for tapped holes are shown in figure 6 a) and b). 4.2 Dowels Where dowels are required, the number and size to be used is given in table 1 and their positions are shown in figures 3 and 4. The flywheel manufacturer may select either two or three equally spaced dowels as dictate
32、d by the requirements of the clutch for sizes 310 mm, and above. Flywheels may also be provided with 12 tapped holes and 4 dowel holes (positions I, II, III, IV) as shown in figure 4, or 12 tapped holes and either two or three dowel holes as follows: - 2 dowel pattern on positions I and III, - 3 dow
33、el pattern on positions I, II and IV. The positional tolerance for dowel location is shown in figure 6 a). 4 D IS0 Figure 2 - 6 hole pattern Figure 3 - 6 hole, 3 dowel Pattern 5 IS0 11055:1996(E) A?.- , P .- - .- Dowel IV .u,( Dowel II L- Dowel III v Figure 4 - 12 hole, to suit either 2,3 or 4 dowel
34、 pattern Figure 5 - Alternative 12 hole pattern 0 IS0 a) mwel LocatIon b) Spigot LOdan NOTE - Datum y = Flywheel spigots axis Figure 6 - positiona tolerancW of hoies IS0 11055:1996(E) 0 IS0 Annex A (informative) Bibliography I IS0 7648:1987, Flywheel housings for reciprocating internal combustion en
35、gines - Nominal dimensions and tolerances. 2 IS0 7649:1991, Clutch housings for reciprocating internal combustion engines - Nominal dimensions and tolerances. 8 IS0 11055:1996(E) KS 43.060.10 Descriptors: road vehicles, commercial road vehicles, internal combustion engines, reciprocating engines, flywheels, clutches, dimensions, connecting dimensions, dimensional tolerances, interchangeability. Price based on 8 pages