Plain Linear Bearing CFPJR12C 12mm JIS, Round Flanged Center, Double Wide, Compensated IDJIS double round center flange plain bearing, 12mm ID, compensated running clearance. This Simplicity bearing has a self lubricating FrelonGOLD liner bonded directly to the bore of a sturdy anodized aluminum body, with no separate insert, for maintenance free, oil free sliding in harsh environments such as extreme heat, dirt, welding splatter, and vibration, where ball bearings often fail. Its double body equals two standard bearings back to back for