This bearing commonly has a single-piece outer race and two piece inner race, although it is possible to have a two piece outer and single-piece inner. Splitting one of the races allows the bearing to be assembled and to have a single piece cage. The raceway in each race is formed from two radii (one for each half of the raceway) struck from different centers so that the form of the track is a gothic arch. Since one of the races must be split, the thrust load must be maintained at a high level during operation to prevent the balls from contacting the split. Therefore these bearings are used more in applications that require high thrust-carrying capacity.