Structure of axle box for heavy-duty 8-axle diesel locomotive

DF4, DF8 and DF11 diesel locomotive with C0-C0 can not be suited to haul the heavy-duty train of 5000 t. Developing 8-axle higher power diesel locomotive is a better measure. The 8-axle locomotive body’s length and height increase because of adding two wheel-sets with motor, one transition frame and the 3rd suspension. The two-axle bogie and its axle box must be designed well in order to solve the lenght and height limitation of 8-axle locomotive. The selection of axle box type for its space constrain and the axle box’s strenght calculation results were presented.