... cast steelCRANKSHAFT: cast steelSHAFT 1, SHAFT 2 and SHAFT 3: C45 steelCONNECTION ROD: cast steel*The machine parts listed ... DESCRIPTIONGEAR, CENTRAL GEAR, CONNECTION ROD,CRANKSHAFT, SHAFTS 1,2,3 and BLADES are made of high quality STRUCTURAL STEEL or ... 10 years, and the wear parts can last for 3 years, so it wil cost you almost nothing for ... bar without changing the blade. Steel Bar Cutter GQ40/GQ50