date: Sat, Jun 4, 2011 at 4:25 AM subject: High temperature Ball Bearing cage-ball assembly Hello, We are looking for ceramic (or high temperature metal) cage/retainer with the balls only as shown in the attached figure (not the upper or lower races) for custom made thrust bearings.The ID we need can be anywhere between 4.25in to 5in. The OD or diameter of the balls doesn't matter, so you can use your standard sizes. The application temperature is ~600C