We can produce various gear according to customer's requirement, with out diameter upto 4m We can produce various gear according to customer's requirement. Features: 1) Materials: Grey iron, stainless steel, rubber 2) Material: S17CrNiMo6, 34CrNiMo6, 17Cr2Ni2Mo, 20CrNi2Mo, 4340, 4140, 35-42CrMo, MC NYLON rubber, etc. 3) Process: Precision casting, investment casting, die casting, permanent mould ...