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7/25/2019 Reston Spherical Bearings Catalog
http://slidepdf.com/reader/full/reston-spherical-bearings-catalog 1/8
www.mageba.ch
Bearings
High quality sliding materials
High quality certified PTFE (with grease pockets)
High quality controlled silicone grease
Sliding plate of austenitic high-grade stainless steel
Spherical parts coated with hard chrome or nickel
European Technical Approval
Manufactured in accordance with the new European
standard EN 1337-7
Use of high quality certified materials
Guaranteed quality
Quality Management System in accordance with ISO
9001: 2000 and EN 729-2
Certified in accordance with DIN 18800-7
Properties
Principle
mageba RESTON ®
SPHERICAL bearings are designed totransmit vertical forces while permitting large rotations by
means of matching rounded upper and lower parts.
Longitudinal and transverse movements of the
superstructure can be facilitated as appropriate by a flat
sliding interface between the top of the rounded element
and a sliding plate, or alternatively, side-mounted guide
bars can be provided to transmit horizontal forces.
Cross-section of spherical bearing
anchor plates dowels
RESTON ® SPHERICAL (PTFE)
The spherical bearing with PTFE sliding discs, in accordance
with EN 1337, facilitates large rotations and medium to large
loads.
PTFE sliding plate
Chromed spherical surface
- Certified with CE-label.
- Design in accordancewith EN 1337-7.
- Certified with CE-label.
- Design in accordance
with EN 1337-7.EN 1337-5
0672-BPR-001
7/25/2019 Reston Spherical Bearings Catalog
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Area of application
RESTON®SPHERICAL bearings are particularly suitable for:
• Bridges requiring high degree of rotation at supports
• Medium to high loads
• Bridges in extremely cold locations (temperatures below -20 °C)
The bearing and how it works
Free rotation is facilitated by the concave lower element, which is lined with a
PTFE sliding disc. A convex rounded counterpart forms the other half of the
sliding pairing, and with its polished hard chrome (or nickel) surface, liesalmost frictionless on top of the concave lower element.
In the case of a guided sliding or a free sliding bearing, a PTFE sliding disc is
provided on top of the rounded element. This, in conjunction with an upper
sliding plate, permits the bridge to move in either the specified direction (as
limited by guide bars) or freely. In order to keep frictional resistance to a
minimum, a polished austenitic stainless steel sheet is applied to the underside
of the sliding plate
RESTON®SPHERICAL bearings are technically approved. Certification of
approval (Z-16.4-314) by the Deutsche Institut für Bautechnik in Berlin is
available upon request.
Testing and approvals
The following standard corrosion protection is used for all exposed steel
components:
• SA 3 sandblasting• 50µm zinc metal spray galvanising
• Two top coats, each 40µm
Alternative corrosion protection can be provided upon request
Corrosion protection
2 Product Features
The principal components of the spherical bearing and materials used:• Steel components: Grade S355
• PTFE: high quality certified, white PTFE with grease pockets
• Sliding plate: welded austenitic stainless steel sheet
• Coating of rounded part: hard chrome or nickel
• Lubricant: high quality certified silicone grease
Materials and quality control
Additional equipment
All mageba RESTON®SPHERICAL bearings are equipped with a type plate
(containing key information) as standard.
Guided sliding and free sliding spherical bearings can be equipped with an
optional movement scale.
Upon request spherical bearings can be fitted with dust protection or a bellows
(folded sheet) (as prescribed by the German Approval).
Application of silicone grease to PTFE
Sliding plate of a spherical bearing
Spray galvanising
Optional movement scale
7/25/2019 Reston Spherical Bearings Catalog
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Type Loads Dimensions of the bearing Weight
& Vertical
Vmax [kN]
Horizontal
Hmax [kN]
H
[mm]
A
[mm]
B
[mm]Size [kg]
KF 1 490 49 110 265 265 50
KF 2 1‘080 108 110 305 305 70
KF 3 1‘940 194 115 365 365 100
KF 4 3‘060 306 115 425 425 130
KF 5 4‘430 443 120 490 490 170
KF 6 6‘090 609 125 555 555 230KF 7 7‘970 797 135 650 650 335
KF 8 10‘140 1‘014 145 715 715 440
KF 9 12‘580 1‘258 160 790 790 595
KF 10 15‘230 1‘523 170 870 870 760
KF 11 18‘190 1‘819 180 955 955 970
KF 12 21‘400 2‘140 195 1‘025 1‘025 1‘230
KF 13 24‘820 2‘482 205 1‘105 1‘105 1‘485
KF 14 28‘560 2‘856 220 1‘180 1‘180 1‘820
KF 15 32‘550 3‘255 245 1‘260 1‘260 2‘285
KF 16 36‘750 3‘675 275 1‘345 1‘345 2‘775
KF 17 41‘260 4‘126 300 1‘435 1‘435 3‘300
KF 18 46‘040 4‘604 335 1‘530 1‘530 3‘855
KF 19 51‘000 5‘100 365 1‘630 1‘630 4‘435
KF 20 56‘290 5‘629 400 1‘735 1‘735 5‘050
The table is based on a permissible
eccentric pressure of 32 N/mm2
(C35 concrete quality) on the connecting
concrete.
The bearing dimensions given in the table
are valid for:
• Vmin = 0.5*Vmax
• HRes, max = 0.1*Vmax
• Angle of rotation tan φ = ±0.01
Dimensions and weights for different
permissible pressure on the concrete and
extraordinary loading conditions can be
calculated upon request.
Fixed Bearing Type KF 3
RESTON®SPHERICAL Type KF (fixed) bearings allow free rotation and the
transmission of horizontal forces from any direction.
By placing movement prevention bars on the upper support plate, the fixed
bearing can transmit both longitudinal and transverse horizontal forces from
the upper to the lower support structure.
In order to keep the spherical part free of horizontal forces, fixed bearings are
also provided with an additional sliding surface between the rounded element
and the upper plate.
Fixed spherical bearings Type KF
Anchoring:
Bearings can be equipped with anchor plates upon request. This requires additional space and is not taken into consideration in the table.
Loads and dimensions
Assembly of a spherical bearing
7/25/2019 Reston Spherical Bearings Catalog
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The table is based on a permissibleeccentric pressure of 32 N/mm2
(C35 concrete quality) on the connecting
concrete.
The bearing measurements entered in the
table are valid for:
• Vmin = 0.5*Vmax
• HRes, max = 0.1*Vmax
• Angle of rotation tan φ = ±0.01
• Longitudinal movement ±100mm
Dimensions and weights for different
permissible pressure on the concrete and
extraordinary loading conditions can be
calculated upon request.
Anchoring:
Bearings can be equipped with anchor plates upon request. This requires additional space and is not taken into consideration in the table.
RESTON®SPHERICAL Type KE (guided sliding) bearings allow the free
rotation of the superstructure as well as guided sliding movement in one
direction.
The guided sliding bearing can transmit horizontal forces from the upper to
lower support structure via guide bars on the sliding plate.
In order to keep the frictional resistance during movement to a minimum, the
guide bars also use materials suitable for sliding.
Guided sliding spherical bearings Type KE
4 Guided Sliding Bearing Type KE
KE 1 520 52 180 300 470 125 95
KE 2 1‘130 113 230 350 515 125 125
KE 3 2‘050 205 305 425 580 125 135
KE 4 3‘230 323 360 480 645 125 225
KE 5 4‘680 468 435 540 720 135 310
KE 6 6‘430 643 505 605 790 145 420KE 7 8‘420 842 575 690 860 155 550
KE 8 10‘710 1‘071 645 755 935 170 725
KE 9 13‘280 1‘328 720 815 1‘015 185 960
KE 10 16‘080 1‘608 790 900 1‘090 185 1‘165
KE 11 19‘200 1‘920 860 965 1‘165 200 1‘445
KE 12 22‘590 2‘259 930 1‘045 1‘245 210 1‘765
KE 13 26‘200 2‘620 1‘005 1‘125 1‘325 215 2‘100
KE 14 30‘140 3‘014 1‘070 1‘205 1‘405 235 2‘615
KE 15 34‘360 3‘436 1‘135 1‘285 1‘485 260 3‘200
KE 16 38‘790 3‘879 1‘200 1‘375 1‘575 285 3‘820
KE 17 43‘550 4‘355 1‘275 1‘470 1‘670 315 4‘480
KE 18 48‘590 4‘859 1‘350 1‘570 1‘770 345 5‘180
KE 19 53‘830 5‘383 1‘425 1‘675 1‘875 375 5‘910
KE 20 59‘420 5‘942 1‘510 1‘790 1‘990 410 6‘685
Type
&
Size
Loads Dimensions of the bearing Weight
[kg]
Vertical
Vmax [kN]
Horizontal
Hmax [kN]
A
[mm]
B
[mm]
L
[mm]
H
[mm]
Loads and dimensions
Guided sliding spherical bearing
7/25/2019 Reston Spherical Bearings Catalog
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Free Sliding Bearing Type KA 5
Free sliding spherical bearings Type KA
The table is based on a permissibleeccentric pressure of 32 N/mm2
(C35 concrete quality) on the connecting
concrete.
The bearing measurements entered in the
table are valid for:
• Vmin = 0.5*Vmax
• Angle of rotation tan φ = ±0.01
• Longitudinal movement ±100mm
• Transverse movement ±20mm
Dimensions and weights for different
permissible pressure on the concrete and
extraordinary loading conditions can be
calculated upon request.
RESTON®SPHERICAL Type KA (free sliding) bearings enable the free
rotation of the superstructure as well as free sliding movement.
Since this design can accommodate neither stop units nor guide bars, the free
sliding bearing is unable to transmit horizontal forces.
Anchoring:
Bearings can be equipped with anchor plates upon request. This requires additional space and is not taken into consideration in the table.
Type
&
Size
Loads [kN] Dimensions of the bearing Weight
Vertical
Vmax [kN]
A
[mm]
B
[mm]
L
[mm]
H
[mm] [kg]
KA 1 520 175 245 460 105 65
KA 2 1’130 220 290 505 110 85
KA 3 2’050 285 355 565 115 95
KA 4 3’230 350 430 635 115 165
KA 5 4’680 415 505 700 125 225
KA 6 6’430 485 585 770 125 300KA 7 8’420 560 665 845 135 410
KA 8 10’710 625 740 915 145 535
KA 9 13’280 695 820 985 155 700
KA 10 16’080 770 900 1‘065 160 870
KA 11 19’200 835 975 1‘135 175 1‘115
KA 12 22’590 905 1‘055 1‘215 195 1‘430
KA 13 26’200 975 1‘135 1‘295 120 1‘705
KA 14 30’140 1‘045 1‘215 1‘375 220 2‘135
KA 15 34’360 1‘105 1‘295 1‘455 250 2‘655
KA 16 38’790 1‘175 1‘385 1‘545 285 3‘200
KA 17 43’550 1‘245 1‘480 1‘640 320 3‘785
KA 18 48’590 1‘320 1‘580 1‘740 355 4‘405
KA 19 53’830 1‘395 1‘685 1‘845 395 5‘050
KA 20 59’420 1‘480 1‘800 1‘960 440 5‘735
Loads and dimensions
Free sliding spherical bearing
7/25/2019 Reston Spherical Bearings Catalog
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When the bearing is installed the parallelism of the support plates must be
checked, as well as the pre-setting values and the mounting direction /
location.
After the successful installation of the bearing, transportation fittings must be
removed immediately to avoid damage to the bearing.
Spherical bearings should only be installed under the guidance of suitablytrained professionals.
Detailed assembly and installation instructions can be provided upon request.
Installation
Factory assembly and transportation
The spherical bearings are assembled as a whole in the factory, adjusted to
the pre-setting values, labelled and then packed ready for transportation.
mageba spherical bearings are essentially maintenance free. Therefore, it is
sufficient for checks to be carried out during the regular bridge inspections.
Instructions for Inspections are available upon request.
The spherical bearing has been designed in such a way that all significant
parts can be exchanged as necessary without damaging the adjacent parts of
the bridge.
The customer must ensure that there is free access to the bearing and also
sufficient space to place hydraulic jacks in order to lift the bridge structure.
Maintenance
6 Assembly and Installation
Proof of quality
RESTON®SPHERICAL bearings have proven themselves under heavy traffic
conditions to be extremely durable. For four decades they have been usedsuccessfully throughout the world.
Qualified staff and the most up-to-date manufacturing facilities as well as
consistent quality control procedures are the fundamental ingredients that
ensure the high quality standards of mageba products.
mageba has been ISO 9001-2000 and EN 729-2 certified since 1991, and is
also certified in accordance with DIN 18800-7.
Upon request vertical, horizontal and friction tests can be carried out on thespherical bearing.
mageba has purpose-built its own testing facility for bridge bearings. It can
apply vertical force of up to 100,000 kN, making it the largest test rig in the
world.
Testing
Welding in the factory
External supervision and control
Bearing testing facility
7/25/2019 Reston Spherical Bearings Catalog
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Quotations and Orders 7
Requests for quotations
Wherever possible when making a quote request, the most important design
criteria of the bearing should be submitted, thus allowing us to give you the
ideal choice of bearings and ensure best value for money.
In addition to the information already supplied, the following details are also
necessary when placing an order:
• Layout drawing of the structure
• Breakdown of all movements
• Pre-setting values
Work begins once the customer has approved and returned the documents
confirming the pre-setting values.
Delivery time is kept to a minimum thanks to an efficient order processing
system and modern manufacturing methods.
Placing of orders
Quotations
An indicative quote can be made based on the classification and number of
bearings needed. For a more precise quotation we would require the following
information:
• Maximum, minimum and permanent vertical loads (with reference to the
relevant standard (DIN, EN, BS))
• Horizontal force on the bridge in both longitudinal and transverse directions
• Most adverse load combination of maximum horizontal force and minimum
vertical load
• Movement of the bridge in longitudinal and transverse directions• Rotation of the bridge in longitudinal and transverse directions
• Need for anchor plates, dust protection, etc.
• Concrete quality of the columns, abutments and superstructure
• General structural details (concrete or steel bridge, space available for the
bridge bearings etc.)
An exact list of the necessary information is defined in the new European
Bearing Standard, EN1337, Part 1. You can find a checklist based on this
Standard, outlining the necessary information, on our website
www.mageba.ch.
• mageba RESTON ® SPHERICAL bearings have been used successfully for over four decades
• RESTON ® SPHERICAL bearings are certified in many countries
• External quality control conducted by independent institute
• Quality Assurance certification to ISO 9001:2000 and EN 729-2
• Welding certification in accordance with DIN 18800-7
• Use of high quality certified materials
• Design according to EC 3, BS 5400, DIN 18800, SIA 161 etc.
• Construction strictly according to EN 1337
Key points about RESTON ® SPHERICAL bearings according to EN 1337-7:
Irtysh River Bridge, Kazakhstan
Equipped with 20 mageba Spherical Bearings capable of resistingvertical loads of up to 10,500 kN and horizontal forces of 500 kN
Spherical bearings in production
7/25/2019 Reston Spherical Bearings Catalog
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8 Product range and references
Worldwide references
Services- Inspections
- Tests
- Installations
- Refurbishments
- Cleaning
- Remote monitoring
Shock Absorbers- Hydraulic Shock
Absorbers
- Spring Dampers
Expansion Joints- Single Gap Joints
- Modular Expansion
Joints
- Sliding Finger Joints
- Cantilever Finger Joints
- Mat Joints
- Railway Joints
- Architectural Joints
Bridge Bearings- Pot Bearings
- Elastomeric Bearings
- Spherical Bearings
- Earthquake Bearings
- ILM-Bearings- Special Bearings
- Rocker Bearings
More information on mageba and our products can be found on www.mageba.ch.
bridges linking people – worldwide ®
mageba saSolistrasse 688180 Bülach
Switzerland
Tel.: +41-44-872 40 50
Fax: +41-44-872 40 59
Version 2008.02
mageba Bridge Products Pvt. Ltd.
Shanghai, China
Tel.: +86-21-5740 7635
Fax: +86-21-5740 7636
mageba Bridge Products (Pvt.) Ltd.Kolkata, IndiaTel.: +91-33-22900250 to -253
Fax: +91-33-22900254
mageba gmbhUslar, GermanyTel.: +49-5571-9256-0
Fax: +49-5571-9256-56
mageba gmbhFussach, AustriaTel.: +43-5578-75593
Fax: +43-5578-73348
mageba saCugy VD, Switzerland
Tel.: +41-21-731-0710
Fax: [email protected]
mageba gmbhEsslingen a.N., Germany
Tel.: +49-711-758844-0
Fax: [email protected]