... and hard tooth surface gearbox- Special decelerator for plastic extruder Key words: gearbox, ZLYJ series, speed reducer, extruder gearbox, plastic gearbox ... as required by user. Decelerator code is composed of type, output stage center distance, nominal drive ratio and assemblage ... mode respectivelyExample of earmark: ZLYJ 225-- 12.5 -- (,) ZLYJ series 133, 146, 173, 200, 225, 250, 280, 315, ...