Rossi
GX Series - Extruder Design
The Rossi GX Series is a specialized range of helical and bevel helical gear reducers and gearmotors purpose-built for extruder applications in the plastics, rubber, and food processing industries. Derived from the proven G Series platform, the GX integrates a heavy-duty extruder support flange redesigned with wide bearing surfaces to handle extreme axial thrust loads generated during extrusion. Available in standard and extended center-distance configurations, the GX offers an exceptional balance between transmitted torque and admissible axial load capacity. For plant managers and equipment OEMs, this translates into extended extruder screw life, consistent product quality, and reliable 24/7 throughput—backed by a single-piece cast iron housing and ground gear profiles that minimize noise and vibration under high pressure.
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Extruder-Specific Flange Design
Wide support surfaces absorb the severe axial forces characteristic of single- and twin-screw extruders, protecting downstream drivetrain components.
Six Sizes with Torque up to 710,000 Nm
The scalable GX range (sizes 125 to 710) delivers massive torque output for the largest compounding, recycling, and food extrusion lines.
Single-Piece High-Rigidity Housing
A robust, monolithic cast iron housing maintains precise gear alignment under fluctuating thermal and mechanical loads.
Hardened & Ground Helical Gear Pairs
Expertly finished helical and spiral bevel gears maximize efficiency, reduce noise, and extend service intervals.
Standard & Extended Center Distances
The U-layout housing variant provides design flexibility when space constraints or specific thrust load requirements must be met.
Minimum Maintenance, Maximum Uptime
Simple shaft-mounting design, optimized lubrication, and proven mechanical components reduce maintenance hours and associated costs.
Why Specify Rossi GX Extruder Gearboxes for Your Production Line
Extruder drivetrains must endure relentless axial forces while maintaining precise, vibration-free operation. The Rossi GX Series meets this challenge by integrating an extrusion-dedicated thrust flange—conceived for both standard and heavy-duty applications—directly into a proven modular gearbox design. This approach eliminates the need for external thrust bearings in many installations, simplifies mechanical layout, and improves overall drivetrain reliability. With short delivery times on customized configurations, OEMs and end-users alike gain a drivetrain partner that accelerates equipment design and minimizes life-cycle costs.
Extruder Drive Applications: From Plastics to Food Processing
The GX Series powers a wide variety of extrusion processes. Typical applications include plastic compounding and recycling extruders, rubber mixing and sheeting lines, food and pet-food extruders, and continuous chemical processing screw conveyors. Whether driving a single-screw extruder for PVC profiles or a twin-screw compounding line for engineering plastics, the GX provides the precise speed regulation, high sustained torque, and axial load management necessary for uniform melt quality and maximum throughput.