Using accurate design simulation software capable of running parametric studies across a range of parameters simultaneously, such as bearing clearances and manufacturing tolerances, is essential. It is possible to pinpoint where problems could arise and mitigate the issue by making the design less sensitive and therefore avoiding potential expensive problems. During the past few years, Schaeffler has established itself as a key partner for the development of rolling bearing solutions for rail-bound freight and passenger traffic, high-speed trains, and locomotives. The axlebox bearings used here are subjected to extreme loads at the connecting point of the wheelset and the bogie frame. In order to achieve even higher reliability in daily operation and to keep wear and maintenance outlay down to a minimum, Schaeffler operates accredited testing facilities in Germany and China to evaluate the performance capacity of its axlebox bearings for railway applications.