1、BRITISH STANDARDBS ISO 6194-1:2007Rotary shaft lip-type seals incorporating elastomeric sealing elements Part 1: Nominal dimensions and tolerancesICS 23.100.60; 83.140.50g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g4
2、0g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 6194-1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2008 BSI 2008ISBN 978 0 580 53181 1National forewordThis British Standard is the UK implementatio
3、n of ISO 6194-1:2007. It supersedes BS 7780-1:1994 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee MCE/11, Fluid seals and their housings.A list of organizations represented on this committee can be obtained on request to its secretary.This publication
4、 does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publicationDate CommentsReference numberISO 6194-1:2007(E)IN
5、TERNATIONAL STANDARD ISO6194-1Second edition2007-09-15Rotary 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 lastomre Partie 1: Dimensions nominales et tolrances B
6、S ISO 6194-1:2007ii iiiContents 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 Pressure and nominal dimensions . 3 6.1 Pressure.
7、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 width 7 9.2 Seal outside diameter. 8 10 Size ident
8、ification code 9 11 Identification statement 9 Annex A (informative) Seal specification. 10 Bibliography . 13 BS ISO 6194-1:2007iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Inter
9、national 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 committee. International organizations, governmental and non-governmental, in liaison wit
10、h 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 accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technica
11、l 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 approval by at least 75 % of the member bodies casting a vote. Attention is drawn to
12、 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 Committee ISO/TC 131, Fluid power systems, Subcommittee SC 7, Sealing devices. This s
13、econd 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 elastomeric sealing elements: Part 1: Nominal dimensions and tolerances Part 2: Voca
14、bulary Part 3: Storage, handling and installation Part 4: Performance test procedures Part 5: Identification of visual imperfections BS ISO 6194-1:2007vIntroduction Rotary shaft lip-type seals are used to retain fluid, e.g. lubricant, in equipment where the differential pressure is relatively low. T
15、ypically 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 a designed interference-fit between the shaft and a flexible element incorporated in the seal. Similarly, a designed in
16、terference-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 installation of all seals are necessary to avoid hazards, both prior to and during installation, which would adversely af
17、fect service life. BS ISO 6194-1:2007blank1Rotary shaft lip-type seals incorporating elastomeric sealing elements Part 1: Nominal dimensions and tolerances 1 Scope This part of ISO 6194 describes seals utilising elastomeric sealing elements. They are considered suitable for use under low-pressure co
18、nditions (see 6.1). This part of ISO 6194 shows seal types and examples. It also specifies the nominal dimensions and tolerances of 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
19、 sealing elements. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 286
20、-2, ISO system of limits and fits Part 2: Tables of standard tolerance grades and limit deviations for holes and shafts ISO 5598, Fluid 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 te
21、rms 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 housing-bore depth; d nominal inside diameter of the inner case; b nominal seal width; c housing chamfer length; BS ISO 6194-1:20072 D1nominal diameter of the shaft to be
22、 used with the seal; dmminor diameter at the shaft lead-in chamfer; D2nominal diameter of the housing 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
23、2 Type 3 Type 4 Metal-cased Metal-cased with inner case Semi-rubber-covered metal-cased Rubber-covered 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
24、Four basic types of outside-diameter construction 5.2 Sealing lip arrangements Examples of sealing lip arrangements are shown in Figure 2. a) Single lip b) Single lip with protection lip Figure 2 Sealing lip arrangements BS ISO 6194-1:20073The sealing lip arrangements shown in Figure 2 can be used w
25、ith each seal outside-diameter construction shown in Figure 1. Hydrodynamic 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,
26、 or seals made by different manufacturers, the constructions shown 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 kP
27、a to 30 kPa (0,3 bar) above atmospheric pressure. The user should consult 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 D1nominal diameter of the shaft to be used with the seal D2nomi
28、nal diameter of the housing bore and outer diameter of the seal b nominal seal width aAir side. bFluid side. Figure 3 Seal BS ISO 6194-1:20074 Table 1 Nominal dimensions Dimensions in millimetres D1D2b aD1D2b aD1D2b aD1D2b a6 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 2
29、8 47 7 50 72 8 140 170 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
30、270 20 15 26 7 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 2
31、0 22 35 7 42 62 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 ab 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 Tab
32、le 2 and shall be free from burrs, sharp edges or rough machining marks. BS ISO 6194-1:20075Key dmminor diameter at the shaft lead-in chamfer D1nominal diameter of the shaft to be used with the seal Figure 4 Shaft lead-in chamfer Table 2 Shaft lead-in chamfer Dimensions in millimetres Shaft diameter
33、 Shaft diameter D1dmmax. D1dmmax. D1u 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 in the axial direction,
34、 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 the manufacturer and user.
35、 9 Seal tolerances 9.1 Seal width The recommended seal width tolerances are listed below in Table 4. BS ISO 6194-1:20078 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 18 0,5 18 b u 25 0,6 9.2 Seal outside diameter To provide an
36、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 ferrous housings only. If non-ferrous housing materials are
37、 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 surface and the housing-bore surface is a characteristic relate
38、d 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 millimetres unless otherwise specified Nominal outside diameter D
39、iametral tolerance Roundness tolerance aD2Metal cased Rubber covered b, cMetal cased Rubber covered D2u 50 + 0,20 + 0,30 + 0,08 + 0,15 0,18 0,25 50 D2u 80 + 0,23 + 0,35 + 0,09 + 0,20 0,25 0,35 80 D2u 120 + 0,25 + 0,35 + 0,10 + 0,20 0,3 0,5 120 D2u 180 + 0,28 + 0,45 + 0,12 + 0,25 0,4 0,65 180 D2u 300
40、 + 0,35 + 0,45 0,8 + 0,15 + 0,25 0,25 % of out- side diameter 300 D2u 530 + 0,45 + 0,55 1 + 0,20 + 0,30 0,25 % of out- side diameter BS ISO 6194-1:20079aThe roundness tolerance is equal to the difference between the maximum diameter and the minimum diameter derived from three or more equally spaced
41、measurements. bRubber-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 manufacturer and purchaser. cRubber-covered and semi-rubber-covered seals employing certain materials other than nitri
42、le 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 of the shaft and housing, as given in Table 1. Examples of the size identification code are given in Table 6
43、. Table 6 Examples of size identification code Dimensions in millimetres D1D2Size code 6 16 006016 70 90 070090 400 440 400440 11 Identification statement (Reference to this part of ISO 6194) Manufacturers are strongly recommended to use the following statement in test reports, catalogues and sales
44、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 incorporating elastomeric sealing elements Part 1: Nominal dimensions and tolerances.” BS ISO 6194-1:200710 Annex
45、 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 as 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 applica
46、tion. 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 insp
47、ection or quality control on the seals supplied by the manufacturer. BS ISO 6194-1:200711Table A.1 Purchasers information Purchaser: Reference: Application: Assembly drawing: 1 Shaft information a) Diameter (D1) mm max. .mm min. b) Material c) Surface roughness Ra .m Rz .m d) Type of finish . e) Har
48、dness . f) Chamfer information g) Rotation 1) Direction of rotation a Clockwise Anti-clockwise Bi-rotational . 2) Rotation speed . min 13) Rotation cycles (Time on Time off ) h) Other shaft motion (if applicable) 1) Axial reciprocation Length of stroke .mm Cycles per minute Reciprocation cycles (Tim
49、e on Time off ) 2) Circumferential oscillation Magnitude of oscillation . Degrees Cycles per minute Oscillation cycles (Time on Time off ) i) Additional information (i.e. splines, holes, keyways, shaft lead, etc.) 2 Housing information a) Bore diameter (D2) .mm max. .mm min. b) Bore depth (a).mm max. .mm min. c) Material d) Surface roughness Ra .m Rz m e) Chamfer information f) Housing rotation (if applicable) 1) Direction of rotation a Clockwise Anti-c
