RBY209 Insert Bearing 45x85x52.2mm Self Aligning Insert Ball Bearing Dustproof Design For Conveyor Packaging Textile Machinery Product Overview RBY209 is an extended double-side inner ring spherical insert ball bearing with dual set screw locking structure, interchangeable with YAR209-2F standard bearing, overall dimension 45×85×52.2mm. Equipped with double lip rubber seal and relubrication grease nipple, it features reliable dustproof performance and excellent self-aligning