Intelligence for All Wheel Drive - Haldex

Products in Landskrona
(Sweden), and adds.
“After all, this is up to 25
kilograms per axle.”
But the new brake
concept offers even
more advantages.
Thanks to its consistent
modular design, the
new wheel end is a model
example of adaptability. This
characteristic permits not only
a wide range of different specifi -
cations but also at the same time,
retrofi t potential. “It is important
that the customer can use the old axle
and its journal,” Matthias J. Haupt, Vice
President Marketing of skf’s Business
Unit Trucks, explains the concept.
The brake itself is extremely versatile too. For
all 22,5” wheels, Haldex uses 21” brakes which
saves more than 75 kilograms per triple-axle suspension.
However, within the Haldex modular
concept, a fi xed caliper brake, with the same pad
and disc replacement intervals, could also be
used for 19,5” wheels. This variant is attractive
� Testing of the disc brake.
� The SKF-Haldex wheel end, combining
the two companies’ experience in disc brake
design and compact truck hub units.
www.haldex.com
for all those who pay special attention to weight:
“Compared to conventional 22.5-inch wheel
ends, it reduces the weight per axle by as much
as 35 kilograms,” Joakim Gripemark, product
development, points out.
But the Haldex-skf system is also suitable for
heavier clamping forces. With more of a solid
design (and thus a bit more weight) and fi tted
with a 22-inch (430 mm) disc, the fi xed calliper
dual disc brake is well prepared for clamping
forces of up to 35 kNm that will undoubtedly be
required some time in the future. “The capacity
of sliding caliper brakes is suffi cient for up to 30
kNm,” Gripemark is convinced, “but if you need
35 kNm, then there’s not enough space available
for sliding caliper brakes.“
FIELD TESTS WITH THE NEW WHEEL end
are in full swing both in Europe and in the
United States, not only in trailers but also in
truck front axles. Here, in particular, such a
space-saving slim design is likely to meet with
high demand, at least when the independent
wheel suspension for the steering axle becomes
involved. “In 2006, we concluded the devel-
The new SKF hub
unit has been
designed for a lifetime
of one million
maintenance-free
kilometres.
opment stage,” Andreas Richter outlines the
history of the new fi xed caliper brake that is
now ready for serial delivery. It is the German
axle manufacturer Gigant who introduced the
brake at the Solutrans trade fair in Lyon in April
2007.�
1/2007 Haldex Dynamix 15