extruder speed reducer 1.for conical twin screw extruder 2.model:SZ45,50,65,80,92 3.SKF and NSK bearings extruder speed reducer are mainly used for the twin screw extruders.Hard gears vertical speed reducer,Gears material: 20CrMoTi hard gears and conical gears,gears surface carburization Model: SJZseries, it can be used for the single screw with diameters from Φ45/60mm,-Φ50/105mm,Φ65/132mm,Φ80/ ...