BONFIGLIOLI TRASMITAL 500 SERIES
The Bonfiglioli Trasmital 500 Series of Drum Drives for
Transit Mixers has been extended with a new model
designed for drum capacity up to 18 cubic meters and
it has been enhanced with an electric version to meet
the specific requirements of the new hybrid truck
applications.
The 500 Series, the Trasmital Product range of drive
units for Concrete Mixer Truck application started in
1976, when the company called at that time Italsai
started their operations in their production facility in
Forlì (Italy).
The 562 gearbox (along with the larger 522 size) was
designed for 8 to 12 cubic meters drum capacity and it
had a very different construction layout compared to
the current production units, particularly in terms of
oscillation system which was located on the external
side of the housing and grease lubricated and the
support function was provided by a single row ball
bearing with the races machined directly on the
transmission housing and output flange. But the
core of the transmission was already a three stage
planetary geartrain, the predecessor of the huge
range of planetary system now incorporated in the
widest range of drive units currently produced for
construction equipment, agricultural, offshore and
wind turbines applications.
1
The product range have been updated during the 80’s
and new sizes were designed to cover small dumpers
applications from 1 to 5mc. Overall, over 60,000 units
were produced until the end of the 90’, mostly for the
national market.
The current series (sizes from 575 to 580) were
introduced in the beginning of the year 2000’s,
after a significant redesign activity which included
a new oil lubricated oscillating system integrated in
the gearbox designed to meet the most demanding
application of the North American market as well as
Eastern Europe and India. In addition, the modular
design approach allows the configuration of several
features and options such as in line or offset input
for a flexible motor installation, integrated PTO for
pump drive, speed sensor and a wide ratio availability.
Over 250,000 units have been produced until now
globally, considering the Bonfiglioli facilities in Italy,
Slovakia and India.
The 590 gearbox has now been designed in order to
extend the application of Transit Mixer Drives to the
bigger machines from 14 to 18 cubic meters. With
this product Bonfiglioli intends to reinforce their
presence in the continuous growing Chinese market,
also by investing in a dedicated production line that
will be implemented in the new manufacturing plant
of Bonfiglioli China.
1.
The 562 model was produced
since 1976 to the until 1989.
Type Torque [Nm]
501
2.
Typical concrete Mixer truck
application of the 562 drive from
a picture of the 1985.
12000
565
12000
567
20000
568
20000
575
577
580
590
2
The new 590 drive with
90KNm peak torque is
designed for Concrete Mixer
Trucks up to 18 cubic meters.
3000
564
50000
60000
75000
90000
The Bonfiglioli 500 Series
covers Concrete Mixer Truck
Applications from 1 to 18
cubic meters.
BONFIGLIOLI TRASMITAL 500 SERIES
The new 590 has been designed in Italy leveraging
the most advanced simulation and design verification
techniques including a specific laboratory test stand
which is capable to reproduce the duty cycle of the
real application including continuous and intermittent
torque application along with the radial loading due
to the drum weight, additionally a four-bar linkage
system hydraulically actuate is capable to reproduce
the oscillation and dynamic forces of the truck.
As a result, the new design has been proven to be
extremely robust and capable to handle higher
oscillations degrees between the drum and the
support which are nowadays becoming more
aggressive due to the higher elasticity of the modern
truck frames when driving both on and off-road.
Laboratory Test Stand specific
for Concrete mixer drives at
Bonfiglioli R&D Center in
Forlì, Italy.
Finite Element Simulation of
the 590 housing deformation
under load.
The 590 can be offered also in the electric version
for Hybrid truck applications: in this the mechanical
construction includes a helical parallel gear input
reduction with a 60 kW liquid cooled AC motor and
an optional emergency motor with quick mechanical
disconnect.
This version is particularly attractive not only
because of its proven higher efficiency and reduced
fuel consumption during the phase of loading and
unloading when the drum can be operated from the
truck battery keeping the diesel engine off, but also
for the reduced gas emission as well as low noise level
which reduce he environmental impact and make it
more desirable for use in town centers environments
or night works.
The 577E electric drive has been designed for hybrid concrete
mixer applications.
Hybrid Concrete Mixer Truck equipped with Bonfiglioli 577E was
presented at Bauma Munich in 2013.
Andrea Torcelli is Director of Research & Development
at Bonfiglioli Mobile & Wind Business Unit.
HEADQUARTERS
Bonfiglioli Riduttori S.p.A.
Via Giovanni XXIII, 7/A
40012 Lippo di Calderara di Reno
Bologna (Italy)
tel: +39 051 647 3111
fax: +39 051 647 3126
[email protected]
www.bonfiglioli.com