... /(PVC, PP, PE, PA, PC, ABS .etc)Series general helical gear box We ,Lucheng screw Machinery Factory, is one ... carburizing process and precise grounding to sequentially get high loading capacity of per certain volume.5.Long Service LifeUnder ... worm gear unit can reach 89%.8.Large Radio Loading Ability9.Axial Load Ability of Up to 5% of ... /(PVC, PP, PE, PA, PC, ABS .etc)Series general helical gear box