US Patent 7753593 Tapered roller bearing

A tapered roller bearing (1) comprises an inner ring (2), an outer ring (3), a plurality of tapered rollers (4) rollably disposed between the inner and outer rings (2, 3) and a cage (5) for holding the tapered rollers (4) at predetermined circumferential intervals, wherein (the circumferential length on the PCD)−(roller diameter×the number of rollers)<roller diameter. Further, the tapered rollers (4) are uniformly disposed such that the distance between rollers on the PCD is less than (the roller diameter/the number of rollers).