oSIST prEN 1337-4:2018

Structural bearings - Part 4: Roller bearings

This document specifies rules for the design, testing and manufacture of single and multiple roller bearings in which the roller axis is horizontal and movements are perpendicular to the roller axis.
It is applicable to roller bearings with rollers and roller plates made from carbon steel or cast steel or stainless steel.
Roller bearings can be combined with sliding elements, guides and bearings as specified in other parts of this European Standard.
This document is applicable to bearings with monolithic rollers and roller plates not subjected to surface hardening, included through welding.
This document will be used in conjunction with prEN 1337-1:2018 and other relevant parts of the prEN 1337 series.

Lager im Bauwesen - Teil 4: Rollenlager

Dieses Dokument legt die besonderen Regeln für die Bemessung, Prüfung und Herstellung von Einzel- und Mehrfachrollenlagern fest, bei denen die Rollenachse horizontal und Bewegungen im rechten Winkel zur Rollenachse verlaufen.
Das Dokument gilt für Rollenlager mit Rollen und Rollenplatten aus Kohlenstoffstahl oder Gussstahl oder Edelstahl.
Rollenlager können mit Gleitteilen, Führungen und anderen Lagern wie in anderen Teilen dieser Europäischen Norm festgelegt kombiniert werden.
Dieses Dokument gilt für Lager mit einteiligen Rollen und Rollenplatten, die keiner Oberflächenhärtung unterzogen wurden und durch Schweißen verbunden werden.
Dieses Dokument wird in Kombination mit prEN 1337-1:2018 und anderen relevanten Teilen der Normenreihe prEN 1337 verwendet.

Appareils d’appui structuraux - Partie 4 : Appareils d’appui à rouleaux

Le présent document définit les exigences de conception, d’essai et de fabrication d’appareils d’appui à rouleaux simples et multiples, dans lesquels l’axe de rouleau est horizontal et les mouvements sont perpendiculaires à l’axe de rouleau.
Il s’applique aux appareils d’appui à rouleaux et aux plaques de rouleau en acier au carbone, en fonte d’acier ou en acier inoxydable.
Les appareils d’appui à rouleaux peuvent être associés à des éléments de glissement, des guides et des appareils d’appui spécifiés dans les autres parties de cette Norme européenne.
Ce document s’applique aux appareils d’appui à rouleaux monolithiques et aux plaques de rouleau n’ayant subi aucun durcissement de surface, notamment par soudure.
Le présent document sera utilisé conjointement à la norme provisoire prEN 1337-1:2018 et les autres parties pertinentes de la série prEN 1337.

Konstrukcijska ležišča - 4. del: Valjčna ležišča

General Information

• Status: Not Published
• Public Enquiry End Date: 19-Mar-2018
• ICS: 91.010.30 - Technical aspects
• Technical Committee: BBB - Concrete, reinforced concrete and prestressed concrete
• Current Stage: 98 - Abandoned project (Adopted Project)
• Start Date: 21-Oct-2020
• Due Date: 26-Oct-2020
• Completion Date: 21-Oct-2020
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Directive: 89/106/EEC - Construction products
• Mandate: M/104 - Mandate to CEN/CENELEC concerning the execution of standardization work for harmonized standards on structural bearings
• Ref Project: prEN 1337-4 - Structural bearings - Part 4: Roller bearings

Relations

• Revised: SIST EN 1337-4:2004 - Structural bearings - Part 4: Roller bearings
• Effective Date: 01-Mar-2018
• Revised: SIST EN 1337-4:2004 - Structural bearings - Part 4: Roller bearings
• Effective Date: 18-Jan-2023
• Revised: SIST EN 1337-4:2004 - Structural bearings - Part 4: Roller bearings
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 1337-4:2018
01-marec-2018
.RQVWUXNFLMVNDOHåLãþDGHO9DOMþQDOHåLãþD
Structural bearings - Part 4: Roller bearings
Lager im Bauwesen - Teil 4: Rollenlager
Ta slovenski standard je istoveten z: prEN 1337-4
ICS:
91.010.30 7HKQLþQLYLGLNL Technical aspects
oSIST prEN 1337-4:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 1337-4:2018

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oSIST prEN 1337-4:2018


DRAFT
EUROPEAN STANDARD
prEN 1337-4
NORME EUROPÉENNE

EUROPÄISCHE NORM

January 2018
ICS 91.010.30 Will supersede EN 1337-4:2004
English Version

Structural bearings - Part 4: Roller bearings
 Lager im Bauwesen - Teil 4: Rollenlager
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 167.

If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.

This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.

Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.


EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1337-4:2018 E
worldwide for CEN national Members.

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oSIST prEN 1337-4:2018
prEN 1337-4:2018 (E)
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and symbols . 6
3.1 Terms and definitions . 6
3.2 Symbols . 7
4 Types of roller bearings . 8
4.1 General . 8
4.2 Single roller bearing . 8
4.3 Multiple roller bearing . 9
5 Materials . 9
5.1 Materials for rollers and roller plates . 9
5.1.1 General . 9
5.1.2 Carbon steel. 10
5.1.3 Stainless steel . 10
5.1.4 Cast iron . 10
5.1.5 Cast steel . 10
5.2 Materials for other components . 10
6 Design . 10
6.1 General . 10
6.2 General requirements . 11
6.2.1 Curved surfaces. 11
6.2.2 Alignment . 11
6.2.3 Key . 11
6.2.4 Length of rollers . 11
6.3 Load bearing capacity . 11
6.3.1 General . 11
6.3.2 Vertical loads . 12
6.3.3 Eccentricities . 14
6.4 Behaviour under horizontal loads . 16
6.4.1 Loads in the transverse direction . 16
6.4.2 Secondary loads in the direction of translation . 16
6.4.3 Control of rolling movement . 16
6.5 Load transfer to the adjacent structural components . 16
6.5.1 Vertical loads . 16
6.5.2 Horizontal loads . 17
6.6 Movements . 17
6.6.1 Translation capacity in rolling direction . 17
6.6.2 Translation capability perpendicular to the rolling direction . 17
6.6.3 Rotation capability . 17
6.7 Corrosion in the contact line . 17
6.8 Combination with other bearings or elements . 17
7 Testing . 17
8 Manufacturing, assembly, tolerances, marking and labelling . 17
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8.1 General . 17
8.2 Material requirements. 18
8.2.1 General . 18
8.2.2 Carbon steel . 18
8.2.3 Stainless steel . 19
8.2.4 Cast steel . 19
8.3 Flatness of the roller plates. 19
8.4 Surface profile of the roller . 19
8.5 Surface roughness . 20
8.6 Parallelism of contact surfaces of the roller plates . 20
8.7 Diameter of multiple rollers . 20
8.8 Flatness of additional plates . 20
8.9 Alignment of roller axis . 20
8.10 Marking and labelling . 20
9 Transport, storage and installation . 20
10 In-service inspection . 20
11 Maintenance . 21
12 Assessment and verification of constancy of performance . 21
12.1 General . 21
12.2 Type Testing . 21
12.3 Factory production control . 21
12.4 Assessment of the performance of the construction product . 21
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No. 305/2011 . 23
ZA.1 Scope and relevant characteristics . 23
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 25
ZA.3 Assignment of AVCP tasks . 25
Bibliography . 28

3

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oSIST prEN 1337-4:2018
prEN 1337-4:2018 (E)
European foreword
This document (prEN 1337-4:2018) has been prepared by Technical Committee CEN/TC 167
“Structural bearings”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 1337-4:2004.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Regulation 305/2011.
For relationship with EU Regulation 305/2011, see informative Annex ZA, which is an integral part of
this document.
prEN 1337, Structural bearings, consists of the following 8 parts:
— Part 1: General;
— Part 2: Sliding elements;
— Part 3: Elastomeric bearings;
— Part 4: Roller bearings;
— Part 5: Pot bearings;
— Part 6: Rocker bearings;
— Part 7: Spherical and cylindrical PTFE bearings;
— Part 8: Guide bearings and Restraint bearings.
The major technical changes are listed below:
— Complete technical and editorial revision of the document; it is not possible to list all implemented
changes to this edition of EN 1337-4.
4

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prEN 1337-4:2018 (E)
1 Scope
This document specifies rules for the design, testing and manufacture of single and multiple roller
bearings in which the roller axis is horizontal and movements are perpendicular to the roller axis.
It is applicable to roller bearings with rollers and roller plates made from carbon steel or cast steel or
stainless steel.
Roller bearings can be combined with sliding elements, guides and bearings as specified in other parts
of this European Standard.
This document is applicable to bearings with monolithic rollers and roller plates not subjected to
surface hardening, included through welding.
This document will be used in conjunction with prEN 1337-1:2018 and other relevant parts of the
prEN 1337 series.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
prEN 1337-1:2018, Structural bearings — Part 1: General
prEN 1337-2:2018, Structural bearings — Part 2: Sliding elements
prEN 1337-3:2018, Structural bearings — Part 3: Elastomeric bearings
prEN 1337-5:2018, Structural bearings — Part 5: Pot bearings
prEN 1337-6:2018, Structural bearings — Part 6: Rocker bearings
prEN 1337-7:2018, Structural bearings — Part 7: Spherical and cylindrical PTFE bearings
prEN 1337-8:2018, Structural bearings — Part 8: Guide bearings and Restraint bearings
EN 1563, Founding — Spheroidal graphite cast irons
EN 1992 (all parts), Eurocode 2: Design of concrete structures
EN 1993 (all parts), Eurocode 3: Design of steel structures
EN 10025 (all parts), Hot rolled products of structural steels
EN 10083-1, Steels for quenching and tempering — Part 1: General technical delivery conditions
EN 10083-2, Steels for quenching and tempering — Part 2: Technical delivery conditions for non alloy
steels
EN 10088 (all parts), Stainless steels
EN 10160, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection
method)
EN 10164:2004, Steel products with improved deformation properties perpendicular to the surface of the
product — Technical delivery conditions
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oSIST prEN 1337-4:2018
prEN 1337-4:2018 (E)
EN 10340, Steel castings for structural uses
EN 12680 (all parts), Founding — Ultrasonic examination
EN ISO 148 (all parts), Metallic materials — Charpy pendulum impact test
EN ISO 4287, Geometrical product specifications (GPS) — Surface texture: Profile method — Terms,
definitions and surface texture parameters (ISO 4287)
EN ISO 4288, Geometrical product specifications (GPS) — Surface texture: Profile method — Rules and
procedures for the assessment of surface texture (ISO 4288)
EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1)
EN ISO 11666, Non-destructive testing of welds — Ultrasonic testing — Acceptance levels (ISO 11666)
EN ISO 17638, Non-destructive testing of welds — Magnetic particle testing (ISO 17638:2016)
EN ISO 17640, Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and
assessment (ISO 17640)
EN ISO 23278, Non-destructive testing of welds — Magnetic particle testing — Acceptance levels
(ISO 23278)
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 1337-1:2018 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
roller bearing
bearing formed by an upper and lower roller plate separated by one or more rollers
3.1.2
roller
component of a roller bearing with load bearing surfaces of circular cylindrical shape
3.1.3
roller plate
flat component which transmits force between the roller and the adjacent structure
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prEN 1337-4:2018 (E)
3.1.4
multiple roller bearing
bearing comprising more than one roller
3.2 Symbols
For the purposes of this document, the following symbols apply.
3.2.1 Latin upper case letters:
E modulus of elasticity MPa
M design eccentricity moment from actions kNm
Ed
M design eccentricity moment caused by friction kNm
Sd
N axial design force kN
Ed
'
design effect from action per unit length kN/m
N
Ed
N design resistance N
Rd
'
design resistance per unit length kN/m
N
Rd
N characteristic resistance kN
Rk
'
characteristic resistance per unit length kN/m
N
Rk
V horizontal force generated by friction kN
sd
V total transverse or shear force kN
y,d
3.2.2 Latin lower case letters:
b half width of Hertzian contact area mm
d diameter of the roller at the contact surface mm
e total eccentricity due to rolling friction mm
1,d
e design eccentricity due to rotation mm
2,d
e design eccentricity due to translation mm
3,d
e total design eccentricity of vertical load mm
d
f tensile strength of material MPa
u
f yield strength of material MPa
y
g edge distance mm
h distance between horizontal section to be verified and roller contact area mm
l length of roller mm
r radius of roller, radius of contact surface mm
t thickness of roller plate mm
p
u relative movement mm
7

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prEN 1337-4:2018 (E)
3.2.3 Greek letters:
α total design angular rotation about the line of contact, in radians (rad) rad
d
γ partial material factor —
M
μ design coefficient of rolling friction —
d
3.2.4 Subscripts:
eff effective
k characteristic
Rd design resistance
tot total
x direction of local axis
y direction of local axis
z direction of local axis
4 Types of roller bearings
4.1 General
The main components of roller bearings in accordance with this document are shown in 4.2 and 4.3.
4.2 Single roller bearing
The main components of a single roller bearing are shown in Figure 1.

Key
1 roller plate
2 roller with circular cylindrical contact surface
Figure 1 — Main components of a single roller bearing
The roller may be flat sided as shown in Figure 2.
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Key
1 roller plate
2 flat sided roller with circular cylindrical contact surface
Figure 2 — Main components of a flat sided single roller bearing
A single roller bearing allows rotation about the roller axis.
4.3 Multiple roller bearing
The main components of a multiple roller bearing are shown in Figure 3.

Key
1 roller plate
2 roller
3 example of an additional load distribution and rotation element
Figure 3 — Main components of a multiple roller bearing
Rotations are enabled by a rotation element.
5 Materials
5.1 Materials for rollers and roller plates
5.1.1 General
Rollers and roller plates shall be manufactured from ferrous materials in accordance with 5.1.2 to 5.1.5,
5.2 and Table 1.
The ability of curved surfaces and plates to withstand deformation under load depends on the hardness
of the material of which they are made.
Rollers and roller plates shall consist of the same quality class.
Surfaces of roller and roller plate in contact shall have the same nominal strength and hardness.
NOTE There is not a constant relationship between hardness and yield stress of steel but there is between
hardness and ultimate strength.
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Table 1 — Ferrous material classes
Yield Surface Friction
Tensile Impact / at
Elongation
Material
coefficient
strength temperature
strength hardness
class
(minimum)
μ
(minimum) (minimum)
(minimum) (maximum) d
2 2
  HV 10 %
N/mm N/mm
A 340 240 27 J / –20 °C 150 25 0,05
B 490 335 27 J / –40 °C 250 21 0,05
C 600 420 27 J / –40 °C 450 14 0,02
5.1.2 Carbon steel
Carbon steel shall be in accordance with the EN 10025 series or EN 10083-1 and EN 10083-2.
5.1.3 Stainless steel
Stainless steel shall be in accordance with the EN 10088 series of standards.
5.1.4 Cast iron
Spheroidal graphite iron (ductile iron) shall be in accordance with EN 1563. Cast iron shall have an
elongation at break ≥ 12,5 %.
5.1.5 Cast steel
Cast steel shall be in accordance with EN 10340. Cast steel shall have an elongation at break ≥ 12,5 %.
5.2 Materials for other components
The materials for other components shall be ferrous materials selected for their specific performance
which may require high ductility and or wear resistance.
6 Design
6.1 General
prEN 1337-1:2018 applies.
The design rules are based on the principle of normal forces being transferred through a Hertzian
contact area between two surfaces with dissimilar radii.
A single roller bearing allows rotation by a rocking movement of the roller plates. Multiple roller
bearings do not allow rotation by a rocking movement of the roller plates.
Roller bearings may be combined with an additional rotation element to allow rotation perpendicular
to the roller axis. For multiple roller bearings this additional load distribution and rotation element
distributes the vertical force between the rollers and can allow rotation about a single axis or any axis.
These elements shall be in accordance with the relevant part of the prEN 1337 series.
Notches and discontinuities in highly stressed areas should be avoided as they can act as stress raisers
and therefore cause premature fracture due to fatigue cracking.
Components made of cast steel or cast iron shall be subjected to non-destructive testing according to
the relevant part of the EN 12680 series. For the structural design a γ factor shall be used. The
M8
recommended value for y is 1,7. The selected material shall be verified in accordance with the
M8
principles given in the relevant parts of the EN 1993 series, e.g. EN 1993-1-10.
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6.2 General requirements
6.2.1 Curved surfaces
The curved surfaces shall be of circular cylindrical shape.
6.2.2 Alignment
Devices shall be incorporated to ensure that the alignment of the roller axis is maintained and true
rolling is achieved. Where gearing is used to maintain alignment, the pitch circle diameter of the gear
teeth shall be compatible with the geometry of the roller.
6.2.3 Key
Roller bearings may incorporate a mechanical restraint system to resist applied horizontal forces along
the axis of the roller. The mechanical restraint system takes the form of a key.
Keys for roller bearings act as a guide but do not need to comply with prEN 1337-2:2018.
The design shall include the resistance to wear, corrosion and fatigue.
6.2.4 Length of rollers
The total length of the contact surface of a roller shall be at least twice its diameter and shall not be
greater than six times its diameter.
6.3 Load bearing capacity
6.3.1 General
Single roller bearings consist of a lower roller plate supported by the adjacent structure, a roller and an
upper roller plate.
Multiple roller bearings consist of a lower roller plate supported by the adjacent structure, more than
one rollers and an upper roller plate connected to or integrated with a rotation element.
The effects from the load distribution, rotation element, i.e. restoring moments and eccentricity
moments, shall be considered for the calculation of the loads on the individual rollers.
If a bearing has more than two rollers an accurate analyses shall be made of the load transfer to the
rollers considering the stiffness of the roller plates, the local flexibility at the roller to roller plate
contact, the tolerances of the components and the adjacent structures.
In absence of an accurate analyses the transfer of the vertical load from the rotation element through
the upper roller plate of a multiple roller bearing shall be assumed to follow a resultant under 45°
between the rotation element centre and the outer rollers in every possible position.
At the fundamental combination of actions roller to roller plate contact lines shall always be in
compression.
Due to the limited stiffness of the upper roller plate the applied vertical loads and eccentricity moments
will not be linearly distributed to the rollers (see Figure 4).
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a) Normal forces N
z
A parabolic distribution of the vertical force (N )
z
through the roller arrangement shall be assume
b) Eccentricity moments M
e
A two-branch parabolic distribution of the forces
due to the eccentricity moment (M ) shall be
e
assumed with a 0-crossing in the middle

Figure 4 — Example for the distribution of loads between roller plates and rollers
6.3.2 Vertical loads
6.3.2.1 Dimension of roller
Single Roller
'
In determining the values of N the effects of asymmetric loading due to transverse eccentricities and
Ed
applied moments shall be considered.
The following expressions are based on the ultimate strength of the material.
'
The vertical design load per unit length of the roller contact surface N shall meet the condition given
Ed
in Formula (1) under the fundamental combination of actions:
''
NN≤ (1)
Ed Rd
Where
2
 
f
u
 
r⋅
 
γ
 M 8
'
(2)
N = 23,1
z,Rd
E
is the design value of resistance per unit length of roller contact surface as calculated with Formula (2).
In which
r is the radius of the roller;
'
is the design load per unit length of the roller;
N
Ed
'
is the design resistance per unit length of the roller;
N
z,Rd
f is the tensile strength of the material.
u
The recommended value of γ is 1,7.
M8
At the fundamental combination of actions roller to roller plate contact lines shall always be in
compression.
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6.3.2.2 Distance from centre of load transferring zone to free edge roller plate
For the rollers in
...