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Research Institute for Construction Equipment and Technology,
266 Pantelimon, 021652 Bucharest, Romania
phone: 40 21 2025500 fax: 40 21 2551420
www.icecon.ro; [email protected]
Member of
www.eota.eu
www.eota.eu
ETA 17/0403 – version 0 - of 26/07/2017 – page 1 of 15
ICECON S. A.
European Technical Assessment
ETA 17/0403 of 26/07/2017
General Part
Technical Assessment Body issuing the European Technical Assessment
Research Institute for Construction Equipment and Technology – ICECON
Trade name of the construction product
TS Tens Spherical Bearing TC Tens Cylindrical Bearing
Product family to which the construction product belongs
Spherical and cylindrical bearing with special sliding material made of filled PTFE with solid lubricant and reinforcing fibres
Manufacturer
TENSACCIAI S.r.l. Via Pordenone 8 20132 Milano Italy www.tensainternational.com
Manufacturing plant(s)
Factory A Factory B
This European Technical Assessment contains
15 pages including 2 Annexes which form an integral part of this assessment
This European Technical Assessment is issued in accordance with regulation (EU) No 305/2011, on the basis of
European Assessment Document (EAD) EAD 050013-00-0301, Spherical and cylindrical bearing with special sliding material made of filled PTFE with solid lubricant and reinforcing fibres.
ETA 17/0403 – version 0 - of 26/07/2017 – page 2 of 15
Translations of this European Technical Assessment in other languages shall fully correspond to the
original issued document and should be identified as such.
Communication of this European Technical Assessment, including transmission by electronic means,
shall be in full. However, partial reproduction may be made, with the written consent of the issuing
Technical Assessment Body. Any partial reproduction has to be identified as such.
ETA 17/0403 – version 0 - of 26/07/2017 – page 3 of 15
Specific parts
1 Technical description of the product
1.1 Definition of the product
The TS Tens Spherical Bearing/TC Tens Cylindrical Bearing is a structural bearing, which
permits rotation and displacement movements by a plane and a curved sliding surface
between bearing plates of steel. The subject of this ETA is the complete bearing, including, if
relevant, the necessary guides or restraints. As an alternative to Figure A.1 in Annex A, the
bearing may also be used upside down, i.e. with flat sliding surfaces lying below (meaningful,
for example in the case of steel bridges).
The TS Tens Spherical Bearing/TC Tens Cylindrical Bearing is designed according to
EN 1337-7 and for the purpose of controlling the degree of freedom may be combined with
sliding elements according to EN 1337-2 as shown in EN 1337-1. Instead of pure PTFE
according to EN 1337-2, TensaSlide, a special sliding material made of PTFE filled with a
solid lubricant and reinforcing fibres, suitable for high temperatures outside the scope of
EN 1337-2 is used for the sliding surfaces of the bearing.
By this ETA sliding surfaces with a diameter of the circumscribing circle of TensaSlide special
sliding material sheets not less than 75 mm up to 1500 mm, and with effective bearing
temperatures not less than -35°C up to +48°C (permanent use), or to +90°C (limited to short
periods as due to climate temperature changes) are covered. If composite material in
accordance with EN 1337-2 is used in guides, the maximum effective bearing temperature is
limited to +48°C.
Initially lubricated sheets of the special sliding material TensaSlide may be used as well in
lateral guides as an alternative to the relevant sliding materials regulated in EN 1337-2.
TS Tens Spherical Bearing/TC Tens Cylindrical Bearing with an included angle 2 θ > 60° and
2 θ > 75° respectively is beyond the scope of this ETA.
1.2 Combination of materials
The sliding materials in the bearing are combined as shown in Table 1. Only one combination
is used in a sliding surface. The sliding surface is lubricated in accordance with EN 1337-2,
clause 7.4.
Table 1 - Combination of materials for permanent applications as sliding surfaces for
TS Tens Spherical Bearing/TC Tens Cylindrical Bearing with special sliding
material TensaSlide
Plane surface 1)
Curved surface Guides
dimpled
sheet of
TensaSlide
austenitic
steel
dimpled
sheet of
TensaSlide
austenitic
steel
undimpled
strip of
TensaSlide 2)
austenitic
steel hard
chromium CM1
1) The sliding surface may be subdivided into two restrained parts above and below the
rotation element permitting in total the design movement
2) Instead of the undimpled sheets of special sliding material, only where self-alignment
between the mating parts of the bearing is possible, composite materials in accordance with clause 5.3.1 of EN 1337-2 may be used.
TensaSlide sheets are recessed in accordance with Annex A of the EAD.
Austenitic steel sheets are attached to their backing plates by one of the methods shown in
Table 13 of EN 1337-2.
ETA 17/0403 – version 0 - of 26/07/2017 – page 4 of 15
Composite material of type CM1 is attached in accordance with clause 7.2.3 of EN 1337-2.
Where according to clause 6.4 of EN 1337-2 under predicted rotation about a transverse axis
the differential deformation of the TensaSlide sheet in guides across its smallest dimension
for the un-factorized characteristic actions would exceed 0,2 mm, a rotation element is
included in the backing plate. The material combination of this rotation element is in
accordance with the requirements of the mating surfaces of guides given in Table 1 or pot to
piston contact surfaces given in EN 1337-5.
1.3 TensaSlide sheets
The composition of the material is confidential, whereas details are laid down in Table 4 of
this ETA and relevant information is laid down in technical documentation of this European
Technical Assessment, deposited with the Technical Assessment Body Research Institute for
Construction Equipment and Technology-ICECON.
The geometrical conditions of TensaSlide sheets are in conformity with Annex A of the EAD.
The curved TensaSlide sheet may be attached to either the convex or the concave backing
plate of the curved sliding surface.
1.4 Composite material
As an alternative to TensaSlide sheet, for strips in guides the composite material CM1 in
accordance with clause 5.3.1 of EN 1337-2 may be used (see Table 1 in this ETA).
1.5 Austenitic steel
Austenitic steel is in accordance with EN 1337-2, clause 5.4.
1.6 Hard chromium plated surfaces
Hard chromium plated surfaces are in accordance with EN 1337-2, clause 5.5. The substrate
is as specified in clause 5.5.2 of EN 1337-2.
1.7 Lubricant
Silicon grease according to EN 1337-2, clause 5.8 is used as lubricant for sliding surfaces.
1.8 Ferrous materials for backing plates
The ferrous materials used for backing plates are in accordance with EN 1337-2, clause 5.6.
1.9 Bearing configuration
Examples of the TS Tens Spherical Bearing and the TC Tens Cylindrical Bearing are given in
Annex A of this ETA.
The TS Tens Spherical Bearing consists of a backing plate with a convex spherical surface
(rotational element) and a backing plate with concave spherical surface between which a
sheet of TensaSlide and the mating material form a curved sliding surface (as shown in the
example in Figure A.2 of Annex A).
The TS Tens Spherical Bearing is also used in combination with flat sliding elements and
guides to form free and guided bearings according to figure 4a to 4c of EN 1337-7 (as shown
in the examples in Figure A.3 a-b-c of Annex A).
The TS Tens Spherical Bearing combined with a flat sliding element can be used together
with a restraining ring to form fixed bearings according to figure 4d of EN 1337-7 (as shown in
the examples in Figure A.3d of Annex A).
The TC Tens Cylindrical Bearing consists of a backing plate with a convex cylindrical surface
(rotational element) and a backing plate with concave cylindrical surface between which a
sheet of TensaSlide and the mating material form a curved sliding surface (as shown in the
example in Figure A.5 of Annex A).
ETA 17/0403 – version 0 - of 26/07/2017 – page 5 of 15
The TC Tens Cylindrical Bearing is also used in combination with flat sliding elements and
guides to form free and guided bearings according to figure 2 of EN 1337-7 (as shown in the
example in Figure A.6 a-b-c of Annex A).
1.10 Packaging, transport, storage, maintenance, repair
Concerning product packaging, transport, storage, maintenance, inspection, replacement and
repair it is the responsibility of the manufacturer to undertake the appropriate measures and to
advise his clients on what necessary.
2 Specification of the intended use(s) in accordance with the applicable EAD
TS Tens Spherical Bearing/TC Tens Cylindrical Bearing are intended to be used for the
support of bridges or building works in accordance with the scope of EN 1337-1 where the
requirements on the individual bearings are critical.
TS Tens Spherical Bearing and TC Tens Cylindrical Bearing are suitable for all types of
structures, as well as for regions with continuously low and high temperatures. They are also
intended for the use in non-rigid structures with relatively large and frequent displacements
caused by working loads, next to superstructures that induce fast sliding displacements in
bearings, e.g. in bridges for the high speed railways.
The effective bearing temperature of TS Tens Spherical Bearing/TC Tens Cylindrical Bearing
covered by this ETA is not less than -35°C up to +90°C. If composite material in accordance
with EN 1337-2 is used in guides, the maximum effective bearing temperature is limited to
+48°C.
Effective bearing temperatures above +48°C are limited to short periods (repeated periods of
less than 8 hours) as due to climate temperature changes.
The TS Tens Spherical Bearing and TC Tens Cylindrical Bearing are mainly used in concrete,
steel and composite structures.
The provisions made in this European Technical Assessment are based on an estimated
working life for the intended use of TS Tens Spherical Bearing and TC Tens Cylindrical
Bearing of 10 years depending on the cumulated total slide path in accordance with Clause
3.1.3 in this ETA, and provided that the construction product is subjected to appropriate use
and maintenance, taking into account the conditions given in EN 1337-1 and EN 1337-11.
The indications given as to the working life of the construction product cannot be interpreted
as a guarantee neither given by the product manufacturer or his representative nor by the
Technical Assessment Body, but are regarded only as a means for choosing the appropriate
product in the expected economically reasonable working life of the work.
ETA 17/0403 – version 0 - of 26/07/2017 – page 6 of 15
3 Performance of the product and references to the methods used for its assessment
3.1 Performance of TS Tens Spherical Bearings and TC Tens Cylindrical Bearings
Table 2 Essential characteristics and performances of TS Tens Spherical Bearing
and TC Tens Cylindrical Bearing
Basic
requirements
for
construction
works
Essential
characteristics
Assessment
method Performance
BWR 1
Load bearing capacity EAD clause 2.2.1 Table 3
clause 3.1.1
Rotation capability EAD clause 2.2.2 0 – 0,052 rad
clause 3.1.2
Displacement capacity EAD clause 2.2.3
cumulated slide path of
plane and curved sliding
elements combined with
dimpled lubricated sheets
of TensaSlide:10 000 m
cumulated slide path of
guides: 2 000 m
Clause 3.1.3
Durability aspects EAD clause 2.2.4 Durable
Load bearing capacity (of
the sliding element) EAD clause 2.2.5 Clause 3.1.4
Coefficient of friction
(of the sliding element) EAD clause 2.2.6 Clause 3.1.5
Durability aspects (of the
sliding element) EAD clause 2.2.7
Durable
Clause 3.1.6
3.1.1 Load bearing capacity
The curved sliding surfaces are designed in accordance with sub clauses 6.2.1 to 6.2.3 of
EN 1337-7, adapted to the performance of TensaSlide sheets by means of the following:
- the frictional resistance of the sliding surfaces is expressed by means of the coefficients
of friction of TensaSlide sheets given in clause 3.1.5 of this ETA;
- the temperature-dependent characteristic compressive strength of TensaSlide is given in
Table 5 of this ETA.
The backing plates with concave surfaces are designed in accordance with clause 6.9 of
EN 1337-2 and fulfilling the dimensional limitations given in Figure 7 of EN 1337-7.
For TS Tens Spherical Bearing and TC Tens Cylindrical Bearing combined with flat sliding
elements, clause 3.1.4 of this ETA further applies.
In case free spherical bearings as shown in Figure 4a) of EN 1337-7 are fixed by a steel
restraining ring as shown in Figure 4d) of EN 1337-7, for the design of the steel restraining
ring, the design rules for pot wall of pot bearings given in clause 6 of EN 1337-5 apply.
The load bearing capacity is determined for the single TS Tens Spherical Bearing/TC Tens
Cylindrical Bearing under a fundamental combination of actions in relation to the compressive
stress on the sliding surfaces in accordance with Equation (1) of this ETA, see clause 3.1.4.3.
ETA 17/0403 – version 0 - of 26/07/2017 – page 7 of 15
Referring to the maximum dimension of TensaSlide sheets covered by this ETA, the
maximum load bearing capacity of TS Tens Spherical Bearing/TC Tens Cylindrical Bearing at
the relevant temperature is given in Table 3.
Table 3 - Maximum load bearing capacity of TS Tens Spherical Bearing/TC Tens
Cylindrical Bearing under a fundamental combination of actions
Maximum effective bearing temperature,
[C]
Maximum load bearing capacity, [kN]
TS Tens Spherical Bearing TC Tens Cylindrical Bearing
T = 35 170 403 108 482
T = 48 170 403 108 482
T = 60 153 363 97 634
T = 70 136 323 86 786
T = 80 113 602 72 321
T = 90 102 242 65 089
Unless otherwise specified, the load bearing capacity given in Table 3 refers to a coefficient of
reduction of λ = 0,9 to consider load eccentricity in Equation (2) in this ETA, and a partial
safety factor for sliding materials γm = 1,4 (see in Clause 3.1.4.3 in this ETA).
3.1.2 Rotation capability
Combinations of materials for curved sliding surfaces are given in Table 1 of this ETA.
Coefficients of friction of curved sliding surfaces are given in clause 3.1.5 in this ETA.
For the single, maximum rotation angle, the capacity is given by the geometrical design of the
curved sliding surfaces in accordance with EN 1337-7, clause 6.2.4.
The maximum rotation angle of TS Tens Spherical Bearing is ± 0,052 radians about any
horizontal axis. TS Tens Spherical Bearings allow free rotation about their vertical axis.
The maximum rotation angle of TC Tens Cylindrical Bearing is ± 0,052 radians about its
longitudinal axis. TC Tens Cylindrical Bearings do not allow rotation about their transverse
and vertical axes.
3.1.3 Displacement capacity
Combinations of materials for plane surfaces and guides are given in Table 1 of this ETA.
Coefficients of friction of plane sliding surfaces and guides are given in clause 3.1.5 in this
ETA.
The maximum cumulated slide path of plane sliding elements combined with dimpled and
lubricated TensaSlide sheets is 10 000 m.
The maximum cumulated slide path of guides combined with undimpled TensaSlide strips is
2 000 m.
If composite material type CM1 is used in guides, relevant clauses of EN 1337-2 apply.
For the single, maximum displacement, the capacity is given by the geometrical design of the
sliding elements in accordance with clause 6.5.1 of EN 1337-2.
3.1.4 Load bearing capacity (of the sliding element)
A. Sliding surfaces
3.1.4.1 General
The sliding surfaces are designed in accordance with clause 6.8 of EN 1337-2, adapted to the
performance of TensaSlide sliding material:
ETA 17/0403 – version 0 - of 26/07/2017 – page 8 of 15
- the frictional resistance of the sliding surfaces is expressed by means of the coefficients of
friction given in clause 3.1.5 in this ETA;
- the characteristic compressive strength of TensaSlide sheets is given in Table 5 in this ETA.
For composite material of type CM1 used in guides, relevant clauses of EN 1337-2 apply.
Deformations of sliding materials are not used to accommodate rotations except as permitted
in clause 6.4 of EN 1337-2.
3.1.4.2 Non separation of sliding surfaces
With the exception of guides, plane and curved sliding surfaces combined with TensaSlide
sheets are designed so that under the characteristic combination of actions, the minimum
pressure p acting on TensaSlide sheet meets the condition p ≥ 0.
3.1.4.3 Compressive stress
Under a fundamental combination of actions, the following condition is met:
rm
kSd A
)T(fN
(1)
where:
NSd is the design value of the axial force due to the design values of action,
fk(T) is the temperature dependent characteristic compressive strength of sliding material:
- for TensaSlide sheet, fk(T) is given in Table 5 of this ETA,
- for composite material of type CM1 used in guides, clause 6.6 in EN 1337-2 applies;
- γm is a partial safety factor for materials in accordance with EN 1990. If not otherwise
specified, the recommended value is γm = 1,4. The value shall be stated in the technical
documentation accompanying the Declaration of Performance.
- Ar is the reduced contact area of the sliding surface whose centroid is the point through
which NSd acts with the total eccentricity et, which is caused by both mechanical and
geometrical effects, and is calculated on the basis of the theory of plasticity assuming a
rectangular stress block. For guides eccentricity can be neglected.
NOTE: Formulae for the evaluation of the eccentricities of curved surfaces in the most
common cases are given in Annex A of EN 1337-7.
The reduced contact area Ar is given by the formula:
Ar = x A (2)
where:
- A is the contact area of the plane sliding surface or of the projected curved sliding
surface;
- λ is a coefficient given in Annex B of EN 1337-7 for curved sliding surfaces, and in Annex
A of EN 1337-2 for plane sliding surfaces.
For TensaSlide sheets with minimum dimension “a” ≥ 100 mm (according to Figure 3 of
EN 1337-2), the contact areas A and Ar are taken as the gross area without deduction for the
area of the dimples. For sheets with “a” < 100 mm the area of the dimples is deducted from
the gross area.
B. Backing plates
3.1.4.4 General
The load bearing capacity of the backing plates of the sliding surfaces is assessed according
to clause 6.9 of EN 1337-2, adapted to the performance of TensaSlide sheets.
The design of the backing plates follows the provisions given in clause 6.9.1 of EN 1337-2.
ETA 17/0403 – version 0 - of 26/07/2017 – page 9 of 15
3.1.4.5 Deformation assessment
The maximum deformation Δw1+Δw2 of the backing plates (see Figure 9 of EN 1337-2) is
determined in compliance with clause 6.9.2 of EN 1337-2.
The maximum deformation of the backing plates is assessed using the formula:
L
hk708,145,0 hww 0
021 (3a)
and
3000
]mm[L0,1hwwh]mm[h 210r (3b)
where:
Δw1+Δw2 is the maximum deformation of the backing plates;
k is the pressure-dependent stiffness coefficient of dimpled TensaSlide sheets
defined in clause 3.2 in this ETA, with 0 ≤ 1,708 k ≤ 1,0;
L is the diameter of the circumscribing circle of TensaSlide sheet, with L ≤ 1 500
mm according to this ETA;
h0 is the height of protrusion of the TensaSlide sheet in unloaded condition,
according to Annex A of the EAD.
The thickness of the backing plates is in accordance with clause 6.9.3 of EN 1337-2 in order
to fulfil the minimum stiffness for transport and installation.
3.1.5 Coefficient of friction (of sliding elements)
The following coefficients of friction μmax are used for design of TS Tens Spherical Bearing/
TC Tens Cylindrical Bearing.
These values do not apply in the presence of high dynamic actions which may occur for
instance in seismic zones.
The effects of friction are not to be used to relieve the effects of externally applied horizontal
loads.
The following coefficients of friction are valid up to a maximum effective bearing temperature
of +90C.
Coefficient of friction at low temperatures
For sliding elements combined with dimpled and lubricated TensaSlide sheets used in zones
where the minimum effective bearing temperature doesn’t fall below -35C, the coefficient of
friction μmax is determined as a function of the average pressure on the sliding surface p
[MPa], as follows:
0,052μ0,026 max
25σ
1,95
p
(4)
For guides combined with undimpled and initially lubricated TensaSlide sheets, the coefficient
of friction is μmax = 0,090 independent of the pressure.
Coefficient of friction at moderate low temperatures
For sliding elements combined with dimpled and lubricated TensaSlide sheets used in zones
where the minimum effective bearing temperatures doesn’t fall below -5C, the coefficient of
friction μmax is determined as a function of the average pressure on the sliding surface p
[MPa], as follows:
ETA 17/0403 – version 0 - of 26/07/2017 – page 10 of 15
0,025μ0,013 max 25σ
0,95
p
(5)
For guides combined with undimpled and initially lubricated TensaSlide sheets, the coefficient
of friction is μmax = 0,045 independent of the pressure.
NOTE: The average pressure p on dimpled TensaSlide sheets is estimated using the gross
contact area, i.e. neglecting the deduction of the area of the dimples.
For guides combined with composite material type CM1, the coefficient of friction at the
relevant temperature is given in clause 6.7 of EN 1337-2.
3.1.6 Durability aspects (of the sliding element)
The sliding surfaces of TS Tens Spherical Bearing/TC Tens Cylindrical Bearing are protected
from corrosion and contamination in equivalence to clause 7.3 of EN 1337-2.
Where austenitic steel sheet is attached by continuous fillet weld, provided the area covered
by the austenitic steel sheet is free from rust and rust inducing contaminants, no further
treatment of the backing plate behind the austenitic steel sheet is required.
Where the austenitic steel sheet is attached by screwing, counterpunched screwing or
rivetting the full corrosion protection system is applied to the backing plate behind the
austenitic steel sheet.
Areas of the backing plate behind the TensaSlide sheet are protected by one coat of primer
(dry film thickness 20 μm to 100 μm).
Suitable devices, like e.g. rubber skirts are provided to protect sliding surfaces against
contamination. Such protection devices are easily removable for the purpose of inspection.
For hard chromium surfaces special provisions are made in order to protect the surfaces in
industrial environments as indicated in EN 1337-2, clause 7.3.
3.2 Performance of TensaSlide sliding material.
Table 4 - Essential characteristics of special sliding material TensaSlide
Basic
requirements
for
construction
works
Essential characteristic Assessment
method Performance
BWR 1
Material property
Young modulus
EAD, clause 2.2.8
1200 MPa
Material property
Yield strength 11,5 MPa
Material property
Tensile strength ≥ 18 MPa
Material property
Elongation at break ≥ 300%
Material property
Ball hardness 36 N/mm
2
Compressive strength of
special sliding material
TensaSlide
EAD, clause 2.2.9 Table 5 in this ETA
ETA 17/0403 – version 0 - of 26/07/2017 – page 11 of 15
Basic
requirements
for
construction
works
Essential characteristic Assessment
method Performance
Load – deformation
behaviour of special sliding
material TensaSlide:
Stiffness coefficient,
modulus of elasticity
EAD, clause 2.2.10
Stiffness coefficient1)
:
60
37,5MPaσp k
Modulus of elasticity:
Etp = 700 MPa
Load-deformation
behaviour of special sliding
material TensaSlide:
Protrusion after loading
[mm]
1,378 mm (at 150 MPa)
Load-deformation
behaviour of special sliding
material TensaSlide:
Ratio tensile strength/yield
strength
2,2
Load-deformation
behaviour of special sliding
material TensaSlide:
Ratio elongation at
break/yield deformation
32
High temperature
resistance of special
sliding material TensaSlide
EAD, clause 2.2.11 Resistant
Resistance of special
sliding material TensaSlide
against chemical and
environmental influences
EAD, clause 2.2.12 Resistant
1)The stiffness coefficient k of TensaSlide is expressed as a function of the average pressure
p on the sliding material sheet under the characteristic combination of actions.
Table 5 - Characteristic compressive strength of TensaSlide
Effective bearing temperature T [C] ≤ 35 48 60 70 80 90
Sliding surface characteristic compressive strength fk(T)
[MPa]
Main sliding surface Permanent and variable loads
150 150 135 120 100 90 Guides Variable loads
Guides Permanent loads Effects of temperature, shrinkage and creep
50 50 45 40 33 30
4. Assessment and verification of constancy of performance (hereinafter AVCP) system
applied, with reference to its legal base
According to the decision 95/467/EC of the European Commission, amended by the
Commission Decision 2001/596/EC and 2002/592/EC, the system(s) of assessment and
verification of constancy of performance (see Annex V of Regulation (EU) No 305/2011) is 1.
ETA 17/0403 – version 0 - of 26/07/2017 – page 12 of 15
5. Technical details necessary for the implementation of the AVCP system, as provided
for in the applicable EAD
Technical details necessary for the implementation of the AVCP system are laid down in the
control plan deposited with the Technical Assessment Body Research Institute for
Construction Equipment and Technology – ICECON.
The notified production control certification body shall visit the factory twice a year for
surveillance of the AVCP.
Issued in Bucharest on 26.07.2017
by Research Institute for Construction Equipment and Technology – ICECON
ETA 17/0403 – version 0 - of 26/07/2017 – page 13 of 15
ANNEX A – DESCRIPTION OF THE PRODUCT
TS – TENS SPHERICAL BEARINGS WITH TENSASLIDE (example)
Figure A.1: Tens Spherical Bearing
Legend for Figure A.1
1 Sliding plate
2 Backing plate
3 Rotational element
4 Guide
5 TensaSlide sheet
6 TensaSlide sheet
7 TensaSlide or composite material strip
8 Austenitic steel sliding sheet
Figure A.2: Tens Spherical Bearing (fixed by sliding surface)
Figure A.3: Tens Spherical Bearing combined with flat sliding elements
1 5 3
2
7 4
6
8
ETA 17/0403 – version 0 - of 26/07/2017 – page 14 of 15
TC – TENS CYLINDRICAL BEARINGS WITH TENSASLIDE (example)
Figure A.4: Tens Cylindrical Bearing
Legend for Figure A.4
1 Sliding plate
2 Backing plate
3 Rotational element
4 Guide
5 TensaSlide sheet
6 TensaSlide sheet
7 TensaSlide or composite material strip
8 Austenitic steel sliding sheet
Figure A.5: Tens Cylindrical Bearing (fixed by sliding surface)
Figure A.6: Tens Cylindrical Bearing combined with flat sliding elements
1
5
3
2
7 4
6
8
ETA 17/0403 – version 0 - of 26/07/2017 – page 15 of 15
ANNEX B - REFERENCE DOCUMENTS
EAD European Assessment Document (EAD), EAD 050013-00-
0301 Spherical and Cylindrical bearing with special sliding
material made of filled PTFE with solid lubricant and
reinforcing fibres
EN 1337-1:2000 Structural bearings - Part 1: General design rules
EN 1337-2:2004 Structural bearings - Part 2: Sliding elements
EN 1337-5:2005 Structural bearings - Part 5: Pot bearings
EN 1337-7:2004 Structural bearings - Part 7: Spherical and cylindrical PTFE bearings
EN 1337-11:1997 Structural bearings – Part 11: Transport, storage and installation
EN 1990:2002+AC:2008+AC:2010 Eurocode - Basis of structural design
