parallel extruder gearbox twin extruder gearbox parallel extruder gearbox(rigid PVC). Screw diameter 67mm, centerline distance 56mm, length 24 L/D, torque is about 3500 per shaft, AC motor 22 kw/50 Hz/1500 rpm, , screw speed 30 rpm parallel extruder gearbox,parallel counter-rotating extruder gearbox,gearbox,twin extruder gearbox