Federal-Mogul Corporation : Maintenance-Free Bearings from Federal-Mogul
Support One of the World's Longest Suspension Bridges
Federal-Mogul produces more than 100 bearings for the Hardanger Fjord Bridge
in Norway using its DEVA^® bearing technology
Stadtallendorf, Germany, February 8, 2013 ... Federal-Mogul Corporation (FDML:
NASDAQ) has developed maintenance-free bearings for one of the world's longest
suspension bridges. Upon completion later this year, the Hardanger Fjord
Bridge in southwest Norway will be one of the largest in the world, spanning
1,310 meters (4,297ft) between pylons. A total of 128 spherical plain bearings
using Federal-Mogul's DEVA^® self-lubricating material technology will
accommodate the small but essential movements that occur between the bridge
and its supporting cables.
"Wind pressure, load and vibrations from traffic flow and temperature changes
are all contributors to road movement on suspension bridges," explained August
Stadlmayr, managing director of Federal-Mogul DEVA GmbH. "The Hardanger Fjord
bridge was particularly challenging because of its length and the loads
generated, so we are pleased to have developed such a low-maintenance, yet
highly effective solution."
Conventional roller bearings were not well-suited for the prolonged, minute
movements of the bridge while under constant heavy load and could potentially
suffer from surface failures called 'brinelling.' Federal-Mogul's thin-walled,
self-lubricating sliding material, deva.bm^®, addresses this issue by
providing a larger load-carrying surface, providing sufficient durability for
the life of the bridge without repair or replacement.
The design of each bearing installation ensures that even if the sliding layer
became damaged by exposure to loads in excess of the design values, the
structure of the joint is protected and the plain bearing would function at a
The complete bridge includes 120 spherical plain bearings with a shaft
diameter of 160 mm and eight with a shaft diameter of 300 mm, used for the
main retaining cables adjacent to the two bridge towers. The bearing solutions
for these exceptionally challenging requirements was developed by
Federal-Mogul DEVA GmbH, based in Stadtallendorf, Germany, where engineers
used a combination of materials from DEVA's standard, well-proven product
range. The joint balls are made from stainless steel, which is pressed into a
plain bearing made from deva.bm. A low-friction sliding bearing consists of a
backing comprised of steel, stainless steel or bronze, with a deva.metal^®
surface layer. This surface layer is a bronze material manufactured using
powder metallurgy - it is not porous and oil-impregnated, but rather highly
compressed and coated with a layer of solid lubricant material, such as
graphite or PTFE.
The bearing housing forms a two-part spherical ring, also lined with deva.bm,
to provide an extended, maintenance-free service life, high static and dynamic
load capacity, and low friction properties resulting from layers of
homogeneous solid lubricants.
The design is completed using thrust washers that are also made from
deva.metal, which absorb axial forces. The bearings are ideal for dry running
at slow sliding speeds with very high resistance and are well-suited for
extreme temperatures and corrosion.
This is not the first time that DEVA plain bearings have provided reliable,
low-maintenance solutions for bridge construction projects. A number of
bridges around the world benefit from this Federal-Mogul technology, including
the flap bridge in the port of Valencia, Spain over which the Formula 1 race
circuit passes; the bridge over the Peene near Anklam, Germany; and the Rethe
Bridge in Hamburg, Germany.
Some key facts about the Hardanger Fjord Bridge:
o1,310m (4,297ft): span between pylons
o55 m(180ft): height of highway above sea level
o200m(656ft): height of bridge
Federal-Mogul Corporation (NASDAQ: FDML) is a leading global supplier of
products and services to the world's manufacturers and servicers of vehicles
and equipment in the automotive, light, medium and heavy-duty commercial,
marine, rail, aerospace, power generation and industrial markets. The
company's products and services enable improved fuel economy, reduced
emissions and enhanced vehicle safety.
Federal-Mogul operates two independent business segments, each with a chief
executive officer reporting to Federal-Mogul's Board of Directors.
Federal-Mogul's Powertrain Segment designs and manufactures original equipment
powertrain components and systems protection products for automotive,
heavy-duty, industrial and transport applications. Federal-Mogul's Vehicle
Component Solutions Segment sells and distributes a broad portfolio of
products through more than 20 of the world's most recognized brands in the
global vehicle aftermarket, while also serving original equipment vehicle
manufacturers with products including braking, chassis, wipers and other
vehicle components. The company's aftermarket brands include ANCO^® wiper
blades; Champion^® spark plugs, wipers and filters; AE^®, Fel-Pro^®, FP
Diesel^® Goetze^®, Glyco^®, Nüral^®, Payen^® and Sealed Power^® engine
products; MOOG^® steering and suspension parts; and Ferodo^® and Wagner^®
Federal-Mogul was founded in Detroit in 1899. The company employs 45,000
people in 34 countries, and its worldwide headquarters is in Southfield,
Michigan, United States. For more information, please visit
Federal-Mogul Corporate Communications EMEA
+49 (611) 201 9190
Bridge Bearing Detail
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Source: Federal-Mogul Corporation via Thomson Reuters ONE
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