SIST EN 1337-4:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Structural bearings - Part 4: Roller bearingsAppareils d'appui structuraux - Partie 4: Appuis a rouleauLager im Bauwesen - Teil 4: Rollenlager91.010.30Technical aspectsICS:SIST EN 1337-4:2004enTa slovenski standard je istoveten z:EN 1337-4:200401-junij-2004SIST EN 1337-4:2004SLOVENSKI
STANDARD







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1337-4April 2004ICS 91.010.30English versionStructural bearings - Part 4: Roller bearingsAppareils d'appui structuraux - Partie 4: Appuis à rouleauLager im Bauwesen - Teil 4: RollenlagerThis European Standard was approved by CEN on 2 February 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1337-4:2004: E



EN 1337-4:2004 (E)2ContentspageForeword.41Scope.52Normative references.53Terms, definitions and symbols.63.1Terms and definitions.63.2Symbols.63.3Abbreviations.74Functional requirements.84.1General.84.2Load bearing capacity.84.3 Rotation capability.95Materials.95.1General.95.2Carbon steel.95.3Stainless steel.95.4Cast steel.96Design.96.1General.96.2Movement.106.3Curved surfaces.106.4Surfaces in contact.106.5Length of rollers.106.6Guidance and security of rollers.106.7Dimensioning of components.106.7.1Dimension of roller.106.7.2Dimensions of roller plates.116.7.3Load distribution to other components.126.8Particular requirements.126.8.1Flat sided rollers.126.8.2Multiple rollers.126.8.3Corrosion in the contact line.126.8.4Alignment of components.126.8.5Alignment of bearings.126.9Design coefficient of friction.126.10Eccentricities.136.10.1Single rollers.136.10.2Eccentricity due to rotation moment of multiple rollers.136.10.3Transverse eccentricity.146.10.4Total eccentricity.146.11Combination with other elements.147Tolerances.147.1Flatness.147.2Surface profile.147.3Surface roughness.147.4Parallelism of contact surfaces.157.5Diameter of multiple rollers.158Conformity evaluation.158.1General.158.2Control of the construction product and its manufacture.158.2.1Factory Production Control (FPC).158.2.2Initial type testing.15



EN 1337-4:2004 (E)38.2.3Routine testing.158.3Raw materials and constituents.169Installation.1610In-service inspection.16Annex A (normative)
Ferrous materials.18Annex B (informative)
Factory Production Control.19B.1General.19B.1.1Objectives.19B.1.2Documentation.19B.1.3Operations.19B.2Verifications and tests.20B.2.1General comments.20B.2.2Monitoring of conformity.20B.2.3Tests.20B.2.4Treatment of construction products which do not conform.20B.2.5Recording of verification and tests (manufacturer's register).20B.2.6Traceability.21Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EUConstruction Products Directive.22ZA.1 Scope and relevant characteristics.22ZA.2 Procedure(s) for attestation of conformity of roller bearings.24ZA.2.1 System(s) of attestation of conformity.24ZA.2.2EC Certificate and declaration of conformity.28ZA.3 CE marking and labelling.29Bibliography.31



EN 1337-4:2004 (E)4ForewordThis document (EN 1337-4:2004) has been prepared by Technical Committee CEN /TC 167, "Structural bearings",the secretariat of which is held by UNI.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by October 2004, and conflicting national standards shall be withdrawn at the latestby January 2006.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative annex ZA, which is an integral part of this document.The European Standard EN 1337 “Structural bearings” consists of the following 11 parts:Part 1General design rulesPart 2Sliding elementsPart 3Elastomeric bearingsPart 4Roller bearingsPart 5Pot bearingsPart 6Rocker bearingsPart 7Spherical and cylindrical PTFE bearingsPart 8Guide bearings and restrain bearingsPart 9ProtectionPart 10Inspection and maintenancePart 11Transport, storage and installationAnnex A is normative and annex B is informative.This document includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.



EN 1337-4:2004 (E)51 ScopeThis part of EN 1337 specifies the requirements for the design and manufacture of single and multiple rollerbearings, in which the roller axis is horizontal. In order to accommodate displacements parallel to the roller axisroller bearings can be combined with sliding elements in accordance with EN 1337-2.
To permit rotation about theaxis perpendicular to the roller axis or about both axes, as for multiple roller bearings, the roller bearings can becombined with bearings from other parts of EN 1337.This part of EN 1337 does not apply to roller bearings made with materials other than those specified in clause 5.Bearings which are subjected to rotation greater than 0,05 rad resulting from the characteristic combination ofactions are outside the scope of this part of EN 1337.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 1337-1:2000, Structural bearings — Part 1: General design rules.EN 1337-2:2004, Structural bearings — Part 2: Sliding elements.EN 1337-7; Structural bearings - Part 7: Spherical and cylindrical PTFE bearings.EN 1337-9:1997, Structural bearings — Part 9: Protection.EN 1337-10, Structural bearings — Part 10: Inspection and maintenance.EN 1990; Eurocode - Basis of structural design.ENV 1992-1-1; Eurocode 2: Design of concrete structures - Part 1: General rules and rules for buildings.ENV 1993-1-1; Eurocode 3: Design of steel structures - Part 1-1: General rules and rules for buildings.EN 10025, Hot rolled products of non-alloy structural steels — Technical delivery conditions.EN 10083-1, Quenched and tempered steels — Part 1: Technical delivery conditions for special steels.EN 10083-2, Quenched and tempered steels — Part 2: Technical delivery condition for unalloyed quality steels.EN 10088-2, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip for general purposes.EN 10160, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection method).EN 10204, Metallic products — Types of inspection documents.EN ISO 4287; Geometrical product specifications (GPS) - Surface texture: Profile method - Terms, definitions andsurface texture parameters (ISO 4287:1997).EN ISO 6506-1, Metallic materials - Brinell hardness test - Part 1: Test method (ISO 6506-1:1999).ISO 3755, Cast carbon steels for general engineering purposes.



EN 1337-4:2004 (E)63 Terms, definitions and symbols3.1 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1.1roller bearingbearing formed by an upper and lower plate separated by one or more rollers (see Figure 1)3.1.2rolleraccurately machined component of a roller bearing with concentric cylindrical surfaces3.1.3roller plateaccurately machined flat component which transmits force to and from the roller and provides the surface on which theroller moves3.1.4supporting plateplate intermediate between the roller plate and the structure3.1.5multiple roller bearingbearing comprising more than one roller3.1.6rotation elementadditional element required with multiple bearings in order to share the applied normal forces between the rollers3.2 SymbolsFor the purposes of this European Standard, the following symbols apply.adtotal design angular rotation about the line of contact, in radians (rad)bwidth of Hertzian contact area, in millimetres (mm)Eddesign modulus of elasticity, in Newtons per square millimetre (N/mm2)edtotal design eccentricity of vertical load, in millimetres (mm)e1,dtotal eccentricity due to rolling friction, in millimetres (mm)e2,ddesign eccentricity due to rotation, in millimetres (mm)e3,ddesign eccentricity due to translation, in millimetres (mm)Ddiameter of the roller at the contact surface, in millimetres (mm)fuultimate strength of material, in Newtons per square millimetre (N/mm2)fyyield strength of material, in Newtons per square millimetre (N/mm2)NRddesign resistance of the roller plates in Newtons (N)N'Rddesign resistance per unit length in Newton per millimetre (N/mm)NRKcharacteristic resistance of the roller plates



EN 1337-4:2004 (E)7N'RKcharacteristic resistance per unit length in Newton per millimetre (N/mm)NSddesign axial force, in Newtons
(N)N'Sddesign axial force per unit length in Newton per millimetre (N/mm)gmpartial material safety factorLeffective length of roller, in millimetres (mm)MSdrotation moment, in Newton millimetres (Nmm)Rradius of contact surface, in millimetres (mm)tpthickness of roller plate, in millimetres (mm)mddesign coefficient of rolling frictionHdistance between horizontal section to be verified and roller contact area in millimetres (mm)VSdtotal transverse or shear force in Newtons (N)3.3 AbbreviationsULSUltimate Limit StateNDPNationally Determined ParametresFPC Factory Production Control



EN 1337-4:2004 (E)8Key1Horizontal force2Normal force3Roller plate4Roller5Single roller bearing6Flat sided roller bearing7Rotation element8Multiple roller bearingFigure 1 — Types of roller bearing4 Functional requirements4.1 GeneralA roller bearing shall be capable of transferring normal forces between the superstructure and the substructure. It shallpermit translation perpendicular to the roller axis and rotation about that axis.All roller bearings shall incorporate a mechanical restraint system to resist applied horizontal forces along the axis ofthe roller.4.2 Load bearing capacityThe load bearing capacity of the roller bearing shall be obtained from the design verification as a function of thegeometry and the steel properties.



EN 1337-4:2004 (E)94.3 Rotation capabilityThe rotation capability of the roller bearing is an intrinsic characteristic of the system based on its geometry and shallbe declared by the manufacturer. Its maximum value shall be 0,05 rad.5 Materials5.1 GeneralOnly ferrous materials as specified in the following and in annex A shall be used in the manufacture of rollers and rollerplates.Rollers and roller plates shall be examined for cracks by ultrasonic methods in accordance with the requirements of EN10160 or by magnetic particle or dye penetrant methods. No components with linear defects revealed by theseprocedures are acceptable.The low temperature impact properties of all steel mentioned in the following and in annex A shall comply withthe requirements given in annex A. Impact tests shall be conducted as specified in the relevant standards. Theminimum energy at -20 °C for the average of 3 samples shall be as given in annex A. Only one of these 3samples may have a lower value which shall be at least 0,7 x the average specified in annex A.Rollers and roller plates shall not have a surface hardness greater than that specified in annex A.The hardness of roller and roller plates shall be verified in accordance with EN ISO 6506-1. Both the hardness of thecontact surfaces and the variation in hardness across the section shall be verified by tests carried out on the contactsurfaces and across the ends.5.2 Carbon steelCarbon steel shall be in accordance with the requirements of EN 10025 or EN 10083-1 and EN 10083-2. The minimumyield strength shall be 240 N/mm2.5.3 Stainless steelStainless steel shall be in accordance with EN 10088-2. The minimum tensile strength shall be 490 N/mm2 for anycomponent.5.4 Cast steelCast steel shall be in accordance with ISO 3755.6 Design6.1 GeneralNOTE 1The design of roller bearings is based on the assumption that load passes through a Hertzian contact area betweentwo surfaces with dissimilar radii. Design verification with respect to loading, rotation (movement) should be determined inaccordance with clause 5 of EN 1337-1:2000.Performance and durability of bearings designed according to this part of EN 1337 are based on the assumptionthat requirements established in 6.2 to 6.11 and clause 7, as relevant, are complied with.The design values of the effects (forces, deformations, movements) from the actions at the supports of thestructure shall be calculated from the relevant combination of actions according to EN 1990.NOTE 2The decisive design values should be available from a bearing schedule as shown in EN 1990, annex E.1. Until EN1991 is available the guidance given in annex B of EN 1337-1:2000 can be used. Sliding elements should be designed andmanufactured in accordance with EN 1337-2.



EN 1337-4:2004 (E)10gm values are defined in Eurocodes EN 1992 to EN 1999. The recommended value is gm = 1.NOTE 3When values for partial factors have been selected in Member States, which diverge, for specific works, from therecommended value given in EN 1992 to EN 1999, these values apply in the territory of this member State. Such values aredefined in the national annex attached to the relevant Eurocodes.6.2 MovementNOTERoller bearings provide for translation in one direction only. Single rollers permit rotation about the line of contact butmultiple rollers require additional elements to accommodate rotation.Roller bearings for use in curved parts of structures shall have additional sliding elements and/or rotation elements toensure uniform distribution of load across the roller. The axis of rotation shall be perpendicular to the direction ofmovement.6.3 Curved surfacesThe curved surfaces shall be of cylindrical shape.6.4 Surfaces in contactSurfaces in contact shall have the same nominal strength and hardness.6.5 Length of rollersThe length of a roller shall not be less than twice its diameter nor greater than six times its diameter.6.6 Guidance and security of rollersGuidance shall be provided to ensure that the axis of rolling is maintained correctly. Location shall be such that truerolling occurs during movement. Where gearing is used as security, the pitch circle diameter of the gear teeth shall bethe same as the diameter of the rollers.6.7 Dimensioning of components6.7.1 Dimension of rollerNOTE 1The ability of curved surfaces and plates to withstand deformation under load is dependent upon the hardness ofthe material of which they are made. There is not a constant relationship between hardness and yield stress of steel but there isbetween hardness and ultimate strength. Consequently the following expressions are based on the ultimate strength of thematerial.The design axial force per unit length of roller contact N'Sd shall meet the following condition under the fundamentalcombination of actions:RdSd''NN£(1)Where m2RkRd''gNN=is the design value of resistance per unit length of roller contact.N'Rk is the characteristic value of resistance of the contact surface per unit length.d2uRk23'EfRN´´= (2)



EN 1337-4:2004 (E)11 gm values are defined in Eurocodes EN 1992 to EN 1999. The recommended value is gm = 1.NOTE 2When values for partial factors have been selected in Member States, which diverge, for specific works, from therecommended value given in EN 1992 to EN 1999,these values apply in the territory of this member State . Such values aredefined in the national annex attached to the relevant Eurocodes.In determining the values of N'Sd the effects of asymmetric loading due to transverse eccentricities and appliedmoments shall be considered (see also 6.10.3 of EN 1337-1:2000).6.7.2 Dimensions of roller platesRoller plates shall be dimensioned in the direction of displacement to allow for movement calculated for thefundamental combination of actions in accordance with 5.1 of EN 1337-1:2000 plus an additional roller designmovement of 2 x tp, the thickness of the roller plate, or 20 mm whichever is greater. The length of the plates parallel tothe roller axis shall not be less than the length of the roller. In determining the thickness of the roller plates, the followingshall be satisfied using the load distribution shown in Figure 2 under the fundamental combination of actions:RdSdNN£(3)Where mRkRdgNN=is the design value of resistance in accordance with ENV 1992-1-1 and ENV 1993-1-1.()LbtfN+=pyRk2(4)Figure 2 — Load distribution to componentsNOTE 1b can be calculated according to hertzian stress analysis principles or taken as equal to 0.m values are defined in Eurocodes EN 1992 to EN 1999. The recommended value is gm = 1,1NOTE 2When values for partial factors have been selected in member states, which diverge, for specific works, from therecommended value given in EN 1992 to EN 1999, these values apply in the territory of this member state. Such values aredefined in the national annex attached to the relevant Eurocodes.



EN 1337-4:2004 (E)126.7.3
Load distribution to other componentsFor roller bearings the stiffness of the supporting plates is of paramount importance therefore the roller plates shall beso proportioned that loads are adequately distributed to adjacent components. The maximum load dispersion through acomponent shall be taken as 45° unless a greater angle is justified by calculations which take into account thecharacteristics of the adjacent components and materials. In no case shall load dispersion be assumed beyond a linedrawn at 60° to the vertical axis (see Figure 2).6.8 Particular requirements6.8.1 Flat sided rollersWhere movement requirements permit, flat sided rollers may be used. Such rollers shall be symmetrical about thevertical plane passing through the axis of the roller. The minimum width shall not be less than one-third of the diameternor such that the bearing contact area falls outside the middle third of the rolling surface when the roller is at theextremes of movement determined in accordance with EN 1337-1.NOTEFlat sided rollers can be mounted at closer centres than circular rollers of the same load capacity resulting in morecompact bearings.6.8.2 Multiple rollersWhere a bearing has more than one roller an additional bearing in accordance with other parts of EN 1337 shall beincluded to accommodate rotation (see Figure 1). The effects of any rotation moments from this element shall beincluded when calculating the roller forces by taking into account the corresponding eccentricities. The load per rollershall be calculated at the extreme of the expected movement. In
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