1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS 5892-8:2012Railway rolling stockmaterialsPart 8: Railway applications Wheelsets and bogies Poweredand non-powered wheelsets withinboard bearings ProductrequirementsPublishing
2、and copyright informationThe BSI copyright notice displayed in this document indicates when the documentwas last issued. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 70803 9ICS 45.040The following BSI references relate to the work on this standard:Commi
3、ttee reference RAE/3Draft for comment 11/30217674 DCPublication historyFirst published June 2012Amendments issued since publicationDate Text affectedBS 5892-8:2012 BRITISH STANDARDContentsForeword ii0 Introduction 11 Scope 12 Normative references 13 Assembly of components 24 Wheelset characteristics
4、 3AnnexesAnnex A (normative) Characteristics of the press-fitting curve 13Annex B (informative) Documents for the identification of wheelsetcomponents 13Annex C (informative) Product qualification 17Annex D (informative) Product delivery 20Bibliography 24List of figuresFigure 1 Drawing of the test p
5、iece geometry required for fatigue tests 5Figure 2 Example of a test piece 6Figure 3 Wheel parameters 8Figure 4 Single-seat axle for one or two brake discs 9Figure 5 Double-seat axles for two or four brake discs 10Figure 6 Cylindrical gear wheels for motor axle, reducing gears, etc. 11Figure A.1 Cha
6、racteristics of the press-fitting curve 13Figure B.1 Document for identification of components of a single wheelset,usually of Category 1 or of a powered wheelset 14Figure B.2 Document for identification of components of several wheelsets 15List of tablesTable 1 Maximum permissible dynamic imbalance
7、 for non-poweredwheelsets 7Table2Tolerances on wheel parameters 8Table 3 Axial run-out of the internal face 9Table4Tolerances for single-seat axles for one or two brake discs: DescriptionSymbol Category 1 and 2 9Table5Tolerances for double-seat axles for two or four brake discs 10Table6Tolerances fo
8、r cylindrical gear wheels for motor axle, reducing gears,etc. 11Table B.1 Information on the characteristics of the wheelsets 16Summary of pagesThis document comprises a front cover, an inside front cover, pages i to ii,pages 1 to 24, an inside back cover and a back cover.BRITISH STANDARD BS 5892-8:
9、2012 The British Standards Institution 2012 iForewordPublishing informationThis British Standard is published by BSI Standards Limited, under licence fromThe British Standards Institution, and came into effect on 30 June 2012. It wasprepared by Technical Committee RAE/3, Railway rolling stock materi
10、al. A list oforganizations represented on this committee can be obtained on request to itssecretary.Presentational conventionsThe provisions of this standard are presented in roman (i.e. upright) type. Itsrequirements are expressed in sentences in which the principal auxiliary verb is“shall”.Comment
11、ary, explanation and general informative material is presented insmaller italic type, and does not constitute a normative element.Contractual and legal considerationsThis publication does not purport to include all the necessary provisions of acontract. Users are responsible for its correct applicat
12、ion.Compliance with a British Standard cannot confer immunity from legalobligations.BRITISH STANDARDBS 5892-8:2012ii The British Standards Institution 20120 IntroductionThis British Standard specifies the wheelset assembly and finished productcharacteristics that do not arise from a choice of design
13、 parameters, such asdiameters, interferences, materials they are verified during either qualificationor delivery of the product (see Clause 4). It also gives guidance andrecommendations on:a) qualification procedures (see Annex C); andb) delivery conditions (see Annex D).1 ScopeThis British Standard
14、 specifies requirements for the assembly of powered andnon-powered wheelsets with inboard bearings comprising elements conformingto the following standards.a) BS 8535 for axle design.b) BS EN 13261 or BS 5892-1 for axles.c) BS EN 13262 or BS 5892-3 for wheels.NOTE Some characteristics are specified
15、as a function of Category 1 or ofCategory 2. Category 1 is applicable for wheelsets whose operating speed is to exceed200 km/h. Category 2 is applicable for wheelsets whose operating speed is not to exceed200 km/h, and comprises two sub-categories: Category 2a is applicable when the operating speed
16、is to be up to andincluding 120 km/h; Category 2b is applicable when the operating speed is to exceed 120 km/h,but is not to exceed 200 km/h.2 Normative referencesThe following referenced documents are indispensable for the application ofthis document. For dated references, only the edition cited ap
17、plies. For undatedreferences, the latest edition of the referenced document (including anyamendments) applies.BS 5892-1, Railway rolling stock materials Part 1: Specification for axles fortraction and trailing stockBS 5892-3, Railway rolling stock materials Part 3: Specification for monoblocwheels f
18、or traction and trailing stockBS 5892-6, Railway rolling stock materials Part 6: Specification for wheelsets fortraction and trailing stockBS 8535, Railway applications Wheelsets and bogies Powered andnon-powered axles with inboard bearings Design methodBS EN 13261, Railway applications Wheelsets an
19、d bogies Axles ProductrequirementsBS EN 13262, Railway applications Wheelsets and bogies Wheels ProductrequirementsBRITISH STANDARD BS 5892-8:2012 The British Standards Institution 2012 13 Assembly of components3.1 GeneralAll elements which are to comprise the assembled wheelset shall meet thegeomet
20、ric requirements of the applicable standards (see Scope); and the wheelsand the axle shall be in the “ready for assembly” condition.The elements comprising the wheelset can be shrink-fitted or press-fitted. Theinterferences to be used for fitting shall be as specified by the designer of eachelement
21、to be fitted and shall be a function of the characteristics of the elementmaterial and the forces and torque to be transmitted by the fitting. Thisinterference shall be specified according to the geometric tolerances of the axleseats specified in the axle product standard (see Scope).During assembly
22、 of components prior to fitting wheels on the axle:a) allowance shall be made for shrinkage at axle seats due to other nearbyinterference fits (e.g. gearwheels and other bearings); andb) the level of interference between bearings and their shafts or housings shallbe checked to ensure that it is with
23、in the specified tolerances.Unless otherwise specified by the wheel designer, the interference values forwheel fittings specified in 3.2 shall be used.For shrink-fitting, the whole of each wheel shall be heated to a temperature notexceeding 250 C. If a different heating method is used, proof shall b
24、e providedthat there has been no effect on the wheel characteristics as defined inBS EN 13262 or BS 5892-3.If a different heating method is used, this shall be the subject of an agreementbetween the customer and the supplier. As part of this agreement, the suppliershall demonstrate at least that the
25、 axle and wheel characteristics as defined inthe wheel and axle standards (see Scope) are not modified by the fitting. Then,the mechanical resistance of the assembly (see 4.1) shall be demonstrated andthe traceability documents for each fitting shall be defined so as to give thesame type of informat
26、ion as recommended in D.5.The static imbalance of the two wheels of each wheelset shall be within thesame diametric plane and on the same side of the axle. The static imbalance ofthe gear wheels and brake discs shall be in the same plane as those of thewheels, but on the opposite side of the axle.3.
27、2 Interference between axle wheel seat and wheel hub boreUnless otherwise specified by the wheel designer, the following interferencevalues j shall be met:a) for shrink-fitting: 0.0009 dm j 0.0015 dm;b) for press-fitting: 0.0010 dm j 0.0015 dm + 0.06where dm is the mean diameter in mm.3.3 Press-fitt
28、ing diagram3.3.1 Results to be achievedNOTE For press fitting, the force-displacement curve gives confidence that thefitting has not damaged the contact surfaces and that the specified interference hasbeen effective.The shape of the press fitting curve to be obtained shall be as specified inAnnex A.
29、BRITISH STANDARDBS 5892-8:20122 The British Standards Institution 2012The final fitting force, in MN, is a function of the force F specified in 4.1.1 andshall be within the range:0.85 F 200 50 50NOTE Permissible dynamic imbalance values for powered wheelsets to be agreedbetween the customer and supp
30、lier.4.4.2 Test pieceThe imbalance shall be assessed on a fully assembled and machined wheelset.4.4.3 Assessment methodThe assessment method shall be appropriate to the configuration of thewheelset either by test or alternative calculated value subject to agreementbetween the customer and supplier.4
31、.5 Dimensions and tolerances4.5.1 GeneralThe dimensions of the wheelset shall conform to the design drawings, and thedimensional and geometric tolerances to be applied when assembling thedifferent parts of the wheelset shall conform to 4.5.2 to 4.5.4.NOTE The values are dependent on the category of
32、the wheelset and are given formeasurements taken with no load on the wheelset.4.5.2 WheelsWheel parameters shall conform to Figure 3, with the tolerances given inTable 2.BRITISH STANDARD BS 5892-8:2012 The British Standards Institution 2012 7Figure 3 Wheel parametersNOTE Bearing assemblies omitted f
33、or clarity.Table 2 Tolerances on wheel parametersDescription Symbol Category 2mmCategory 1mmabDistance between the internal wheel facesA)a1+2B)0+2B)0Difference in distances between the internal face of eachwheel and the outside of the bearing abutment flange onthe axlec c1orc1- c1 1Difference in tre
34、ad circle diameter d d1ord1- d0.5 0.3 0.3Radial run-out in tread circle h 0.5 0.3 0.3Axial run-out of the internal wheel faceA)g 0.8 0.5 0.3A)Measurement at 60 mm beneath the top of the flange.B)The tolerances may be changed for special designs of wheelsets.4.5.3 Brake discs4.5.3.1 One or two seatsB
35、rake disc parameters shall conform to Figure 4 and Figure 5, with thetolerances given in Table 3, Table 4 and Table 5.BRITISH STANDARDBS 5892-8:20128 The British Standards Institution 2012Figure 4 Single-seat axle for one or two brake discsNOTE Bearing assemblies omitted for clarity.Table 3 Axial ru
36、n-out of the internal faceDescription Symbol Category 2ammCategory 2bmmCategory 1mmAxial run-out of the internal faceA)g10.75 0.5 0.5A)See Figure 4 and Figure 5. Measurements at 30 mm from the external diameter.Table 4 Tolerances for single-seat axles for one or two brake discs: Description Symbol C
37、ategory 1and 2Description Symbol Category1 and 2mmDistance between the internal faces of the disc periphery and theoutside of the bearing abutment flange on the axlef 0.5BRITISH STANDARD BS 5892-8:2012 The British Standards Institution 2012 9Figure 5 Double-seat axles for two or four brake discsNOTE
38、 Bearing assemblies omitted for clarity.Table 5 Tolerances for double-seat axles for two or four brake discsDescription Symbol Category1 and 2mmDistance between the internal faces of the disc peripheries a20.5Difference in distances between the internal face of each discperiphery and the outside of
39、the bearing abutment flange on theaxle.f f1orf1- f14.5.3.2 More than two seatsIf there are more than two seats for the brake discs, the tolerances on thedimensions such as a2or f f1(see Figure 5) shall be as given in Table 5.4.5.4 Cylindrical gear wheels for motor axle, reducing gears, etc.The toler
40、ances of the parameters in Figure 6 shall be as given in Table 6.BRITISH STANDARDBS 5892-8:201210 The British Standards Institution 2012Figure 6 Cylindrical gear wheels for motor axle, reducing gears, etc.NOTE Bearing assemblies omitted for clarity.Table 6 Tolerances for cylindrical gear wheels for
41、motor axle, reducing gears, etc.Description Symbol Category 2mmCategory 1mmRadial run-outA)h1B) B)Axial run-outA)g2B) B)Distance between the lateral reference surface ofthe gear wheel and the outside of the bearingabutment flange on the axleA)c20.5 0.5A)See Figure 6.B)In accordance with the specific
42、ations of the designer.4.6 Protection against corrosion and impactsThe wheelset components shall be protected against corrosion and impacts inaccordance with the applicable standards (see Scope).Cavities arising from the overhang of the wheel hub on the wheel seats shall beprotected or filled with a
43、n anticorrosion product.4.7 MarkingThe constituent parts of the wheelsets shall be marked in accordance with theapplicable standards (see Scope).The wheelset shall (in accordance with the purchase order) be identified as aminimum by the following:a) assemblers marks;b) serial number.These marks shal
44、l be located at the end of the axle which already bears the axlemarks specified in BS EN 13261.BRITISH STANDARD BS 5892-8:2012 The British Standards Institution 2012 11At the other end of the axle, one half of the surface shall be left free of anymarks to permit maintenance identification and the ot
45、her half for any othermarking.The marks shall be stamped. Any protruding burrs resulting from the stampingshall be levelled to allow ultrasonic examination to be carried out in service.BRITISH STANDARDBS 5892-8:201212 The British Standards Institution 2012Annex A(normative)Characteristics of the pre
46、ss-fitting curveThe characteristics of the press-fitting curve shall be as specified in Figure A.1.The fitting force shall start to increase before the wheel seat displacement ontothe wheel hub reaches 30 mm.The force shall then increase continuously without falling outside the limit curvevalues giv
47、en by the curves specified by the designer of the component to befitted, though the following are permitted:a) a decrease in the fitting force at the groove for removal by oil injection, inwhich case the maximum force reached before the groove is reached againwithin a further displacement of 25 mm;N
48、OTE During this decrease, the fitting force value can be lower than thatspecified by the lower curve.b) a maximum decrease of 0.05 MN over the last 25 mm of displacement;c) curves showing local deviation, if previously agreed between the customerand supplier, or on qualification of the product.Figur
49、e A.1 Characteristics of the press-fitting curveNOTE- AB, BC, HE and ED are portions of a straight line, AG is equal to the length of theseat;- for the wheels, the positions of the different points are as follows:YH= 1.3 ; YC= 0.85 F; YD=YE= 1.45 Fwhere: is the nominal diameter of the wheel seat, in metresF is the fitting force specified by the designer of the component to be fitted(wheel, disc, gear wheel, etc.)Keyx Distance in mmy Fitting force F (MN)Anne
