... year 4.Delivery on time NMRV30-130 gear box with electric motor Characteristics:(1) With excellent quality(2) Reasonable price(3) Promise ... iron-HT200# / AluminiumWorm Gear- Cooper-10-3 #Worm-20CrMnTi with carburizing and quenching, surface hardness is 56-62HRCShaft-chromium steel ... .5kw,2.2kw,4kw,5.5kw,7.5kwUsages:In industrial machine: Food stuff,Ceramics,chemical, aswell as packing, printing, dyeing ...