... hard tooth surface extruder gearbox of ZLYJ series for single plastic extruder Series ZLYJ decelerator is a drive with high-precision and hard tooth ... GB10095-88, class 6. Tooth surface hardness is HRC54-62. A thrust bearing with over-specificaiton is mounted on the front ... assemblage mode respectivelyExample of earmark: ZLYJ 225-- 12.5 -- (,)ZLYJ series 133, 146, 173, 200, 225, 250, 280, 315, 330 are ...