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1、 Reference number ISO 6194-1:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 6194-1 Second edition 2007-09-15 Rotary shaft lip-type seals incorporating elastomeric sealing elements Part 1: Nominal dimensions and tolerances Bagues dtanchit lvres pour arbres tournants incorporant des lments dtanchit en la
2、stomre Partie 1: Dimensions nominales et tolrances ISO 6194-1:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and instal
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5、ease inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 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, including photocopying and microfilm
6、, without permission in writing 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 ii ISO 2007 A
7、ll rights reserved -,-,- ISO 6194-1:2007(E) ISO 2007 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references. 1 3 Terms and definitions. 1 4 Symbols. 1 5 Seal types and examples . 2 5.1 Seal outside-diameter construction 2 5.2 Sealing lip arrangements. 2 6
8、 Pressure and nominal dimensions. 3 6.1 Pressure. 3 6.2 Nominal dimensions. 3 7 Shafts. 4 7.1 Shaft ends 4 7.2 Diametral tolerance. 5 7.3 Surface roughness and hardness. 6 8 Housings 6 8.1 Dimensions 6 8.2 Housing-bore tolerance 7 8.3 Housing-bore surface roughness. 7 9 Seal tolerances 7 9.1 Seal wi
9、dth 7 9.2 Seal outside diameter. 8 10 Size identification code 9 11 Identification statement 9 Annex A (informative) Seal specification. 10 Bibliography. 13 -,-,- ISO 6194-1:2007(E) iv ISO 2007 All rights reserved Foreword ISO (the International Organization for Standardization) is a worldwide feder
10、ation 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 for which a technical committee has been established has the right to be represented on that commit
11、tee. 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) on all matters of electrotechnical standardization. International Standards are drafted in accordanc
12、e with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires a
13、pproval by at least 75 % of the member bodies casting a vote. 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 or all such patent rights. ISO 6194-1 was prepared by Technical Co
14、mmittee ISO/TC 131, Fluid power systems, Subcommittee SC 7, Sealing devices. This second edition cancels and replaces the first edition (ISO 6194-1:1982), which has been technically revised. ISO 6194 consists of the following parts, under the general title Rotary shaft lip-type seals incorporating e
15、lastomeric sealing elements: Part 1: Nominal dimensions and tolerances Part 2: Vocabulary Part 3: Storage, handling and installation Part 4: Performance test procedures Part 5: Identification of visual imperfections -,-,- ISO 6194-1:2007(E) ISO 2007 All rights reserved v Introduction Rotary shaft li
16、p-type seals are used to retain fluid, e.g. lubricant, in equipment where the differential pressure is relatively low. Typically the shaft rotates, and the housing is stationary, although in some applications the shaft is stationary, and the housing rotates. Dynamic sealing is normally the result of
17、 a designed interference-fit between the shaft and a flexible element incorporated in the seal. Similarly, a designed interference-fit between the outside diameter of the seal, and the diameter of the housing bore, retains the seal and prevents static leakage. Careful storage, handling, and proper i
18、nstallation of all seals are necessary to avoid hazards, both prior to and during installation, which would adversely affect service life. INTERNATIONAL STANDARD ISO 6194-1:2007(E) ISO 2007 All rights reserved 1 Rotary shaft lip-type seals incorporating elastomeric sealing elements Part 1: Nominal d
19、imensions and tolerances 1 Scope This part of ISO 6194 describes seals utilising elastomeric sealing elements. They are considered suitable for use under low-pressure conditions (see 6.1). This part of ISO 6194 shows seal types and examples. It also specifies the nominal dimensions and tolerances of
20、 the seals, shafts and housings, as well as a dimensional identification code. NOTE ISO 6194 is complementary to ISO 16589 which covers seals incorporating thermoplastic sealing elements. 2 Normative references The following referenced documents are indispensable for the application of this document
21、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 286-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 5598, F
22、luid power systems and components Vocabulary ISO 6194-2, Rotary shaft lip-type seals Part 2: Vocabulary 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 and ISO 6194-2 apply. 4 Symbols The symbols used in this part of ISO 6194 are as follows: a h
23、ousing-bore depth; d nominal inside diameter of the inner case; b nominal seal width; c housing chamfer length; ISO 6194-1:2007(E) 2 ISO 2007 All rights reserved D1 nominal diameter of the shaft to be used with the seal; dm minor diameter at the shaft lead-in chamfer; D2 nominal diameter of the hous
24、ing bore and outer diameter of the seal; r housing corner radius. 5 Seal types and examples 5.1 Seal outside-diameter construction The constructions shown in Figure 1 show four basic types. Type 1 Type 2 Type 3 Type 4 Metal-cased Metal-cased with inner case Semi-rubber-covered metal-cased Rubber-cov
25、ered metal-cased NOTE Because of some variations in design details, or seals made by different manufacturers, the constructions shown are intended only to be representative of the basic types. Figure 1 Four basic types of outside-diameter construction 5.2 Sealing lip arrangements Examples of sealing
26、 lip arrangements are shown in Figure 2. a) Single lip b) Single lip with protection lip Figure 2 Sealing lip arrangements ISO 6194-1:2007(E) ISO 2007 All rights reserved 3 The sealing lip arrangements shown in Figure 2 can be used with each seal outside-diameter construction shown in Figure 1. Hydr
27、odynamic aids on the main lip may be incorporated by some manufacturers in certain applications. The design of the sealing lip should be agreed between the manufacturer and purchaser. NOTE In view of some variations in design detail, or seals made by different manufacturers, the constructions shown
28、are intended only as representative examples of the basic types. 6 Pressure and nominal dimensions 6.1 Pressure Seals of this type are normally used with atmospheric pressure on the air side, and sealing fluids at pressures from 0 kPa to 30 kPa (0,3 bar) above atmospheric pressure. The user should c
29、onsult the seal manufacturer regarding use at other pressures. 6.2 Nominal dimensions The nominal dimensions of the seals are shown in Figure 3 and given in Table 1. Key D1 nominal diameter of the shaft to be used with the seal D2 nominal diameter of the housing bore and outer diameter of the seal b
30、 nominal seal width a Air side. b Fluid side. Figure 3 Seal -,-,- ISO 6194-1:2007(E) 4 ISO 2007 All rights reserved Table 1 Nominal dimensions Dimensions in millimetres D1 D2 b a D1 D2 b a D1 D2 b a D1 D2 b a 6 16 7 25 52 7 45 65 8 120 150 12 6 22 7 28 40 7 50 65 8 130 160 12 7 22 7 28 47 7 50 72 8
31、140 170 15 8 22 7 28 52 7 55 72 8 150 180 15 8 24 7 30 42 7 55 80 8 160 190 15 9 22 7 30 47 7 60 80 8 170 200 15 10 22 7 30 52 7 60 85 8 180 210 15 10 25 7 32 45 8 65 85 10 190 220 15 12 24 7 32 47 8 65 90 10 200 230 15 12 25 7 32 52 8 70 90 10 220 250 15 12 30 7 35 50 8 70 95 10 240 270 20 15 26 7
32、35 52 8 75 95 10 260 300 20 15 30 7 35 55 8 75 100 10 280 320 20 15 35 7 38 55 8 80 100 10 300 340 20 16 30 7 38 58 8 80 110 10 320 360 20 18 30 7 38 62 8 85 110 12 340 380 20 18 35 7 40 55 8 85 120 12 360 400 20 20 35 7 40 62 8 90 120 12 380 420 20 20 40 7 42 55 8 95 120 12 400 440 20 22 35 7 42 62
33、 8 100 125 12 450 500 25 22 40 7 45 62 8 110 140 12 480 530 25 22 47 7 25 40 7 25 47 7 a b may be increased to permit the use of more complex seal configurations. 7 Shafts 7.1 Shaft ends The end of the shaft shall be provided with a lead-in chamfer as shown in Figure 4 and given in Table 2 and shall
34、 be free from burrs, sharp edges or rough machining marks. ISO 6194-1:2007(E) ISO 2007 All rights reserved 5 Key dm minor diameter at the shaft lead-in chamfer D1 nominal diameter of the shaft to be used with the seal Figure 4 Shaft lead-in chamfer Table 2 Shaft lead-in chamfer Dimensions in millime
35、tres Shaft diameter Shaft diameter D1 dm max. D1 dm max. D1 u 10 D1 1,5 50 10 b + 1,5 1 to 1,3 0,75 8.2 Housing-bore tolerance The housing bore shall have a diametral tolerance not greater than H8 (see ISO 286-2). 8.3 Housing-bore surface roughness The surface roughness of the housing bore, measured
36、 in the axial direction, shall be between Ra 1,6 m and Ra 3,2 m, and between Rz 6,3 m and Rz 12,5 m. No visible surface imperfections are allowed. The housing-bore surface roughness may require lower values when metal cased seals are used, in which case they should be subject to agreement between th
37、e manufacturer and user. 9 Seal tolerances 9.1 Seal width The recommended seal width tolerances are listed below in Table 4. -,-,- ISO 6194-1:2007(E) 8 ISO 2007 All rights reserved Table 4 Seal width tolerance Dimensions in millimetres Nominal seal width Tolerance b b u 10 0,3 10 b u 14 0,4 14 b u 1
38、8 0,5 18 b u 25 0,6 9.2 Seal outside diameter To provide an interference-fit between the seal outside surface and the housing-bore surface, the recommended tolerances for the outside diameter of the seal shall be as shown in Table 5. The seal outside diameter tolerances in Table 5 are to be used for
39、 ferrous housings only. If non-ferrous housing materials are used, the seal manufacturer shall be consulted. The seal manufacturer provides the proper recommendations regarding the interference fit between the seal and the non-ferrous housing. NOTE Since the interference between the seal outside sur
40、face and the housing-bore surface is a characteristic related to the design of the seal, it may be necessary for agreement to be reached between the purchaser and manufacturer on the limits to be used. See Annex A for the recommended form. Table 5 Seal outside-diameter tolerances Dimensions in milli
41、metres unless otherwise specified Nominal outside diameter Diametral tolerance Roundness tolerance a D2 Metal cased Rubber covered b, c Metal cased Rubber covered D2 u 50 + 0,20 + 0,30 + 0,08 + 0,15 0,18 0,25 50 D2 u 80 + 0,23 + 0,35 + 0,09 + 0,20 0,25 0,35 80 D2 u 120 + 0,25 + 0,35 + 0,10 + 0,20 0,
42、3 0,5 120 D2 u 180 + 0,28 + 0,45 + 0,12 + 0,25 0,4 0,65 180 D2 u 300 + 0,35 + 0,45 0,8 + 0,15 + 0,25 0,25 % of out- side diameter 300 D2 u 530 + 0,45 + 0,55 1 + 0,20 + 0,30 0,25 % of out- side diameter -,-,- ISO 6194-1:2007(E) ISO 2007 All rights reserved 9 a The roundness tolerance is equal to the
43、difference between the maximum diameter and the minimum diameter derived from three or more equally spaced measurements. b Rubber-covered and semi-rubber-covered seals having a wave-profile outside surface are acceptable but will require different tolerances, to be agreed upon between the manufactur
44、er and purchaser. c Rubber-covered and semi-rubber-covered seals employing certain materials other than nitrile may require different tolerances, to be agreed upon between the manufacturer and purchaser. 10 Size identification code The size identification code shall consist of the nominal dimensions
45、 of the shaft and housing, as given in Table 1. Examples of the size identification code are given in Table 6. Table 6 Examples of size identification code Dimensions in millimetres D1 D2 Size code 6 16 006016 70 90 070090 400 440 400440 11 Identification statement (Reference to this part of ISO 619
46、4) Manufacturers are strongly recommended to use the following statement in test reports, catalogues and sales literature when electing to comply with this part of ISO 6194: “The nominal dimensions and tolerances of the seals, shafts and housings conform to ISO 6194-1, Rotary shaft lip-type seals in
47、corporating elastomeric sealing elements Part 1: Nominal dimensions and tolerances.” ISO 6194-1:2007(E) 10 ISO 2007 All rights reserved Annex A (informative) Seal specification A.1 For the convenience of both the purchaser and manufacturer, it is recommended that the purchaser complete a form such a
48、s the one given in Table A.1, to supply the necessary information to the manufacturer to ensure the supply of a seal suitable for the application. A.2 It is also recommended that the manufacturer complete a form such as the one given in Table A.2, to supply the purchaser with the necessary information to ensure that the seal is in accordance with the equipment design and application requirements, to enable the purchaser to carry out inspection or quality control on the seals su