[jspatz1]

Despite all this discussion of ball bearings, thrust bearings, and pillow blocks, I would have to say that I agree with Dick's preference for plain bronze bushings for this job. Much cheaper, much simpler, and adequate for the light loads in this application. A simple flanged bronze bushing at the top, maybe an additional bronze washer under the hub, and a bronze sleeve bushing and the bottom. Would last a long time, and could be replaced several times for the cost of bearings and pillow blocks.

Also not mentioned yet....if this is an outdoor application, steel bearings and ground shafting will quickly rust out in the weather. Some stainless shafting through bronze bushings will work well and be fairly weather resistant.