Some Features of Nodular Cast Iron Crankshafts Used in the Chinese EQ140 Series Truck Engines

In the Chinese EQ140 series truck engines, nodular cast iron crankshafts are used. Though the works possesses a 12000 ton mechanical press, and therefore is able to produce crankshaft forgings, nodular castings are prefered. Some 200,000 crankshafts have been installed in the engines, which are doing very arduous work in Chinese truck usage.

As compared with a forging, the cost and equipment investment of a nodular cast iron crankshaft is lower. Machinability is improved. Especially the anti-wear quality is appreciably better.