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Double
reduction gearbox (not "worm and wheel" type)
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The
heavy-duty gearbox and thrust bearing (included within
the gearbox) allows for a larger safety factor for
longevity. |
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Full surround cooling at the exit end of the feed
section (not just under the screw in the feed section)
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Full
surround feed section cooling gives protection from
a warm hopper base and feed bridging, especially seen
when the extruder is in a tilted or vertical orientation. |
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Pressure port at the exit end of the first barrel
zone for diagnostics and trouble shooting
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The
diagnostic port between zones 1 & 2 allows evaluation
of the screw's efficiency when problems occur with
a given material or operating condition. |
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Temperature controllers that allow heater
amp monitoring and alarming when a heater is not properly
functioning
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The
temperature controllers' ability to monitor heater
amps allows quick determination of barrel or adapter
heater failures. Adapter zones are often several band
heaters and even a single band failure can be detected
and alarmed. |
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Deep finned heaters with cast aluminum shrouds
to efficiently direct the air through the fins (instead
of bent sheet metal) |
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Barrel cooling air is directed through deep cast aluminum heater fins for longer heater life and improved process control. |
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Steward Mixing Screw (with optional Steward Barrier Screw) |
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A custom designed mixing screw is standard and is often sufficient for most co-ex application. An optional custom designed Steward Barrier can improve output and melt quality for higher output applications . |
