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Motors and Switching
The JET 22-44 Pro-3
Drum Sander uses two
independent motors, one
turning the sanding drum
and the other the conveyor
belt. The larger motor for
the drum produces 3 HP on
1 phase, 230V (only)
power. This TEFC (totally
enclosed fan cooled) motor
is rated using a continuous
duty cycle to provide the clearest indication of its true power. This continuous duty cycle
design also means the motor will stand up to extended heavy usage.
The 3 HP primary motor that drives the drum (left) and the 1/30 HP motor that
controls the conveyor (right) make the JET 22-44 Pro-3 more versatile. Using
the separate conveyor motor also allowed adding our exclusive SandSmart
circuitry.
The industrial style
magnetic switch protects
the motor from
variations in the
electrical power and you
from unexpected restarts
should the power go out
and then come back on.
The conveyor belt is driven by a 1/30 HP DC motor. Using this
special variable speed motor also allowed the development of our
patented SandSmart™ technology discussed in detail later in this
article
Using these two high quality motors means you have plenty of
power for even the toughest jobs. They also provide the flexibility
and control you need for precision sanding.
The JET 22-44 Pro-3 Drum Sander is controlled with an industrial
style magnetic switch that protects the motor from potentially
harmful power fluctuations. This switch also has a safety function
because it prevents the machine from restarting on its own should
the power go out and then come back on unexpectedly. Once the
power goes out, the operator must push the On button to restart the
JET 22-44 Pro-3 Drum Sander.
Precision Drum
The JET 22-44 Pro-3 Drum Sander is built around our
heavy-duty 5”-diameter aluminum drum that has been
precision machined to insure straightness and balance. The
drum spins at 1600 RPM and is adjustable in height and
downward pressure to virtually eliminate snipe. That insures
the smoothest possible surface and maximum abrasive life.
The precision machined drum
insures sanding very flat, smooth
surfaces without vibration.
The 22" wide drum is supported on both ends by sealed,