30BD40 Double Row Sealed Ball Bearing 30mm x 55mm x 23mm One Bearing 30BD40 Double-row Angular Contact Ball Bearing, inner diameter is 30mm, outer diameter is 55mm and width is 23mm. * Item: 30BD40 Bearing * Type: Double-Row Angular Contact ball bearing * Closures: 2 Rubber Seals * Dimensions: 30mm x 55mm x 23mm/Metric * inner diameter: 30mm * outer diameter: 55mm * Width: 23mm * Size: 30 x 55 x 23 mm * Quantity: One Bearing