Here is a bearing which works without oil,but it uses ambient air as lubricant.
It can be used for textile spindles spinning cotton/silk yarns in a ring frame machine or vacuum cleaners and other low load high speed applications. The bearing has the advantages such as--1) cost effective,cheaper by about 50percnt of conventional roller element bearing,2) produces less noise , 3) easier to manufacture and4)lower vibrations at higher speeds. Initial tests upto 30,000rpm reveal encouraging results.This has been patented.
Reward: manufacturers can decide the award