... shall not be less than 1 million times (reciprocating). reducer gearbox Good quality raw material ,Precision machining, Strict inspectiWe ... drawings. Material C45, cast iron and stainless steel ect.Material :carbon steel such as C45,20CrMnTi,40Cr,42CrMo or ... nylon and so onFeathure:1.Material: Alloy Steel, Carbon Steel, S tainless Steel, Harden & Tempered Steel, Cast Iron, Aluminum,Copper,Brass and ...