in my product, there is a spherical rubber bearing working in a rotating mechanism. the rotating mechanism was posted in my former thread http://cr4.globalspec.com/thread/25950/Could-anyone-help-me-on-bearing-lubricant-design, with a drawing as following

the spherical bearing is illutrated as following.

however the manufacturing cost by us is too high, and the quality is not stable. So I have to turn to the professional manufacturers. could anyone tell me where i could buy the rubber bearing, or what companys could supply the bearing.
THANKS!