GL extruders

Gearless (GL) single screw extruder series with high-torque drive concept

The GL (= gearless) extruder series offer an alternative drive concept. A frequency-controlled, high-torque AC motor is used to drive the screw, with the screw and the motor’s output shaft forming a single line. The high-torque AC motor has a high degree of efficiency at all levels – even under partial load. Since the drives of the GL series operate without gears, all those energy losses caused by a gear transmission system, such as flange loss or heating, are also eliminated.

  • Virtually no expense for maintenance (no motor air filter servicing, no gearbox oil change) and consequently cost savings
  • Operation at low noise and vibration levels
  • Higher degree of efficiency in the extruder’s drive chain thanks to high-torque motor technology
  • Smaller footprint with easy access
  • Water-cooled, high-torque AC motor for low energy consumption
  • Reduced number of drive components
  • Compact design
  • Extruder frame on rolls
  • Extruder frame on rails
  • Parallel arrangement or positioning at various angles
  • “Piggyback“ version - placed directly above the main extruder
  • Supports OPC-UA Protocol
  • Supports industry 4.0 functions
  • Control mounted directly on the extruder cabinet or on a mobile stand
  • Individually customizable user interface: adapted to every machine operator (language, icons, screen configuration)
  • Up to 7 extruders can be integrated into the control


Please select the language of your choice.

  • Product_Single_Screw_Extruder_EN.pdf (1 MB)
  • Application_Pipe_EN.pdf (2 MB)