A faulty bearings three-dimensional modeling method is proposed. The fault frequency of the 352226X2-2RZ two-row tapered roller bearing in the normal and faulty state is analyzed using a combination of numerical simulation and experimental study methods. Firstly, the normal and faulty bearing models are developed using the commercial software Solidworks. These models are then introduced to AD-AMS for the addition of joints and drivers and dynamic simulation. Comparing the simulation values with theoretical results show that the simulation results are accurate. Finally, the vibration signal of the roller bearings with outer ring faults is measured on a wheelset running-in test-bed. The experimental results fit with those from the simulation, and the results of the analysis show that the modeling and simulating methods used in this paper are correct.