R18-2RS Sealed Bearing 1-1/8" x 2-1/8" x 1/2"R18 2RS Sealed Ball Bearing 1 1 8" ID Chrome Steel with Double Rubber Seals The R18 2RS is a deep groove ball bearing built from tough 52100 chrome steel and sealed on both sides with rubber to keep out debris and lock in grease. It's a solid pick for electric motors, tools, and machines where clean, low maintenance performance matters. Size: 1 1 8" ID x 2 1 8" OD x 1 2" Width 52100 chrome steel construction for durability Double rubber seals for