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 Robust and economical
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 Obtaining the
desired speed in the simplest way while maintaining the constant optimum
efficiency of the motor, is what makes mechanical control technology from
BERGES so economic.
With their modular
construction our variable pulley systems are logical in their symmetrical
design and mechanically simple in the way they work. The use of high-grade
materials makes the variable pulleys virtually indestructible and
maintenance-free. And that is not the only reason why BERGES variable
pulleys have been at home in many varied mechanical applications for more
than 50 years.
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 In this modular
system, the proven BERGES double pulley drive with a wide V-belt is
integrated in a symmetrical housing. The numerous possibilities offered by this
design range from modular assembly of a wide variety of drive elements up
to a connection-ready, compact variable gear unit.
Spindle and angled
adjustment controls with disc type or scale hand wheel as well as hydraulic
and electrical remote controls are available for speed adjustment. Incl.
speed indicators (analogous or digital) and tachometers.
Three-phase motors as
well as reduction gearboxes of all types with connections in accordance
with IEC can be mounted directly both in U and in Z configurations.
On the output side, every
BERGES assembly unit can be equipped with a two-bearing input or output
shaft in flange design. This in turns allows connection of output elements
in conjunction with chain or belt drives. At the same time, this shaft design
provides the input for reduction gearboxes with IEC connection (hollow
shaft). A gear pedestal is also available for every size.
The housings of RGAE
sizes 2 to 9 have IEC connections on both the motor and output sides as
standard. Size 1 corresponds to a works standard.
The variety of mounting
possibilities and the clear system principle put the choice in your hands:
• You assemble and
complete the BERGES assembly units yourself in accordance with our
examples.
• You can provide us with
motors and reduction gearboxes and we will assemble the unit.
• We can supply you with
exactly the complete, functional drive and adjustment control unit that you
need. Ready for integration in your machines and installations.
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A universal product
range to cover the whole spectrum of drive engineering applications!
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 As multi-faced
in their design as drive engineering in application.
In terms of drive
engineering within the broad scope of machinery and plant construction, the
aspect of economic control plays a determinant role. With BERGES variable
drive motors, you are choosing a technology that has proved itself a
million times over. Our variable drive motors are complete solutions that
comprise the drive unit, speed adjustment, motor and reduction gear.
Whatever kind of drive control assignment needs solving, let us have your
source and target data and specify the geometry suited to your machine or
plant and we will let you have a precise and stable solution that is ready for
production. Make use of the enquiry form for variable drive motors or
special constructions and let us propose a solution for your speed control.
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 Our variable
pulleys of high-grade steel and aluminum alloys are manufactured
automatically in rational series on CNC controlled machines and systems.
Here too quality assurance complies with ISO 9001.
In this way, following
upstream inspection of semi-finished materials and of individual
components, the finished systems are also checked for precision and proper
functioning. Accordingly, comprehensive quality assurance will also
include, for example, the fitting and precision running of each and every
variable pulley being checked, with the balance of the pulleys being
corrected as required. Subjecting our products to endurance testing which
reflects practical conditions.
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