Functioning VU linear motion exciters are composed of a
casing (central body) that, by means of 4 bearings supports two shafts,
synchronized by two helicoidal ground gears. The eccentric weights are mounted
at the end of both shafts, rotating synchronized in opposite sense, determining
a resulting unidirectional centrifugal force perpendicular to the mounting
surface of the exciter. Conformity with Standards and Regulations In the
application field of the Machinery Directive 2006/42/EC, the VU linear motion
exciters can be considered as “partly completed machinery”. Static moment From
3140 to 119525 kgmm. The static moment of eccentric weights can be adjusted by
means of the additional weights. Centrifugal Force Up to 453 kN. Ambient
temperature From -40°C to +70°C.

Exciter mounting position VU exciters can be mounted in all
positions, always with the shafts in horizontal position. Lubrication Gears and
bearings are oil splash / spray lubricated. Driving system The movement is
transmitted by an external driving system coupled with the driving shaft by
means of a joint, generally a Cardan joint (recommended). The external driving
system can be an electric motor, a hydraulic motor or other motor type,
directly coupled or by belts and pulleys. Casing In spheroidal cast iron.
Bearings Spherical roller bearings, highest quality, long rated lifetime in
conditions of maximum load. Shafts In treated steel alloy (Isothermic
hardening) resistant to stress.