Bearing Case

im looking for a particular disk shaped case that can be load bearing on top and allow a small weight of 5 kg to sit on top of it, the bottom of it must be able to slide on a flat surface so as to transport the load, this would be achieved by various ball bearings that are encased in the disk but are exposed on the bottom allowing them to roll on a surface. they must be strong and be able to withstand being dropped from 1 meter as they will fall into a basket after transporting their load