H&S GM 170 Operator's Manual And Parts List page 20

CAPACITY
The GM 170 mixing tank capacity is 170 cubic feet or 135
bushels by volume. The tank will hold approximately 6000
lbs of ground feed consisting of average weight corn, small
grain and/or concentrates. More or less weight (per tank) is
possible, depending upon whether the material that is being
ground is lighter or heavier than average. Grinding capacity
of the mill will vary due to the type of material being ground,
the moisture content of the material, the size screen used,
and the horsepower of the tractor used to operate the mixer.
The mixer is designated for operation by a 50 to 115 hp (28
to 86 kW) 540 RPM tractor or by a 50 to 145 hp (38 to 109
kW) 1000 RPM tractor.
540/1000 RPM PTO DRIVE
The H&S GM 170 grinder-mixer features a 540 drive as standard
equipment for use with tractors up to 115 hp (86 kW).
An optional 1000 RPM drive is available for use with tractors up to
145 hp (109 kW).
MILL & BLOWER
Drive Sheave
The mill/blower can be engaged or disengaged by the positioning
of a pin on the sheave.
To disengage the mill/blower, grasp the pin handle, pull it forward
and rotate it onto the L-shaped bracket.
IMPORTANT: When starting the Grinder-Mixer, engage the
tractor PTO at a slow idle speed. Advance the throttle of the tractor
to the rated PTO speed.
Mill & Blower Operation
Material enters the cylinder chamber through the mill inlet and is
drawn into the cylinder by a vacuum below the cylinder. The
vacuum below the cylinder is obtained by the physical location of
the blower Inlet below the cylinder.
The 21" cylinder is composed of sixty-six swinging hammers which
are equally divided among three rows around the cylinder. As the
cylinder rotates at the recommended speed of 2700 RPM, the
hammers grind the material and force it through the screen. Once
through the screen, the ground material drops down to the transfer
auger and is conveyed to the mixing tank. Lightweight chaff or
dust is drawn into the blower inlet and forced by the blower up
into the collector where it is refined and separated. Heavy particles
are directed back down into the transfer auger and conveyed to
the mixing tank.
OPERATION
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