Item # 1106, Steward Barrier Screws

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Our Steward Barrier Screws are custom designed to meet or exceed our customer’s performance criteria. Whether you are looking for more throughput, improved quality, or both American Kuhne can fine tune the design to meet your needs. And, all of our screws are sold with a 100% performance guarantee. If we don’t achieve the quoted performance on the first try, all we ask is a chance to re-cut or make a new screw. If we don’t nail it the second time, you don’t pay.

Our lab includes 4 extruders specifically engineered to test and evaluate screw performance :
3.5" 24:1 and 30:1 L/D water-cooled extruder with 150 HP drive
Small AKcel Modular extruder with 0.5", 0.75", and 1.0" 24:1 L/D barrels
3.5" 20:1 L/D ULTRA R/S Rubber extruder
1.5" 12:1 L/D ULTRA R/S Silicone extruder
All of our lab machines operate with a computerized high speed (50 reads per second) data recorder to insure optimal performance. In addition to focusing on output and extrudate quality, we monitor and document pressure and temperature. We target pressure stability to be within ±1% to 2% and temperature stability to hold within ±10 ºF.
Detailed Screw Performance Graphs are provided during the quotation phase of the project.

We have sold over 3000 barrier screws for retrofit in to other brands of extruders. We can match any brand, any diameter, any L/D single screw extruder.

We also sell replacement barrels for all brands and models of extruders.

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