位于奥地利格拉茨市的西门子公司运输系统部大约在10a前就开始从事转向架的研制工作。所研制的转向架结构最适合应用于高速旅客列车(内燃机车牵引的车辆和电力动车组的拖挂车辆)。该项研制工作的成果即SF400系列转向架。 Siemens Transportation Systems, based in Graz, Austria, started bogie development approximately 10 years ago. The bogie structure developed is ideally suited for use on high-speed passenger trains (diesel locomotive towed vehicles and EMU towed vehicles). The result of this development is the SF400 series bogies.