Plain Linear Bearing - Round Flanged SFPMR50 50mm Precision IDRound flanged plain linear bearing with a 50mm ID, a precision running clearance, and a standard size aluminum housing featuring a self lubricating FrelonGOLD liner bonded directly to the bore of the housing. Unlike recirculating ball bearings, the FrelonGOLD sliding surface has no rolling elements to jam, seize, or contaminate, making it well suited for harsh conditions involving extreme heat, dirt, vibration, shock, or washdown exposure. The flange