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The
Magnum range of water cannons have been designed and developed to service
the specific demands of the mining and quarry industries. Standard stock
sizes available from 1 1/2" to 4" units offered as manual (MM), joystick
controlled remote (RM), radio frequency controlled remote (RM) and fully
automated pre-programmable systems.
The
bare cannon design of all units is conceptually identical. The patented
swivel bearing for controlling slew and elevation movement ensures a long
working life and requires minimal maintenance. The unique features of
this bearing do away with ball bearings and replace them with a self-lubricating
graphite impregnated product. This hi-tech material is fitted into the
bearing housing providing a large and flat surface area. This concept
reduces bearing fatigue caused by high vibration transfer when in operation
on rough roads or continuous automated use in fixed wash down applications.
Conventional
bearing designs suffer from the balls fracturing and wearing into the
ball race of the bearing housing, thus allowing water to migrate past
the seals causing the bearing to leak and ultimately seize. Other inherit
design faults recognised with conventional bearings is their tendency
to "flog out" when operating in rough terrain due to their small
surface area; offering little support in proportion to the weight that
they must carry and control.
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