4308-2RS 2-Row Sealed Ball Bearing 40x90x33mm4308 2RS Double Row Ball Bearing Single Bearing 40mm x 90mm x 33mm Sealed, Deep Groove Design The 4308 2RS is a heavy duty double row deep groove ball bearing built for high radial loads and durability in demanding industrial applications. With seals on both sides and a wide profile, this bearing offers smooth, long lasting performance while keeping contaminants out and grease sealed in. Pack size: 1 double row bearing Type: Double row deep groove