According to various embodiments of the invention, a motor with a
rotatable hub having fluid dynamic journal and thrust bearings can be
assembled from four major components: a spindle, a hub, a thrust washer,
and a base. The spindle can integrate journal bearing, axial limiter, and
ring seal functions. The hub can integrate journal bearing, thrust
bearing, ring seal, axial limiter, capillary seal, and bumper functions.
The thrust washer can integrate thrust bearing and lubricant circulation
functions. The base can integrate capillary seal and lubricant storage
and circulation functions. Each function can be integrated as structural
feature in its corresponding component. The spindle, hub, and thrust
bearing can be preassembled. The base can be loaded with lubricant prior
to assembly with the spindle/hub/thrust bearing combination.