What is a screw extruder gearbox, how does it work, and […]
What is a screw extruder gearbox, how does it work, and what are the common types of failures.
Gearboxes are an integral part of a Screw Extruder. These devices are used to drive the screw to impart torque in order to overcome the friction in the extruder process. The gearboxes are used to convey high torques and are typically used to drive single or twin-screw extruders. The screw itself is driven by an electric motor through a gearbox. The gearboxes in a Screw Extruder provide the torque required to overcome frictsion and give the extruder the ability to produce high volumes of plastic. The material is extruded through a nozzle located at the end of the barrel.
The gearbox for screw extruders features a double shaft with output shafts that rotate simultaneously in the same direction. The double toothed couplings are small, which enables them to transmit large torques while maintaining a small axial spacing. This gear mechanism can achieve inclined positioning through its toothing.
A single-screw extruder can be positioned within the tolerances specified by the supplier. The centerline of the screw is centered within the gearbox housing, while the deviation is no greater than 0.25 mm. The input and output shafts of the gearbox are connected to the motor via a coupling, and the barrel is centered within the gearbox housing. The barrel bending and twisting forces are then transmitted back into the shafts and bearings.
The Gearbox For Screw Extruder component reduces the motor speed and transfers required torque to the screw shafts. This gear unit is geared to disperse drive power evenly among both worm shafts to absorb the high back pressure of the screw. The structure of the Gearbox For Screw Extruder is based on the small center distance between the input and output shafts, the required output torque and the gap width between the screw flights.
