TTHD bearings consist of two thrust races, a set of rollers and a cage. This design can create up to 40 percent more capacity than cylindrical and spherical bearings with the same envelope dimensions.The configuration of TTHD bearings creates a benefit called true rolling motion. The extensions of the raceways and rollers converge at a common point (the apex) on the axis of rotation. As a result, true rolling motion reduces heat generation and wear on the races and rollers.
Same basic roller and raceway design as the TTHDFL, except that the lower race is composed of two pieces whose faces are spherically ground to permit self-alignment under conditions of initial misalignment.
TTHDFLSA bearings should not be used if dynamic misalignment (changing under load) is expected.