... : low noises, stable operation, big load capability, long service lifetime. SJ series single screw plastic extruder:Features And ApplicationThis unit is advanced ... by low noise, stable working, big bearing capacity and long series life. This set can be extruding thermo-plastics like soft ... /h)Speed(r/min)Drive power(kw)Center Height(mm)SJ-2525/1 520-1202.21000SJ-3025/11020-1805.51000SJ-4525 ...