PB6 Spherical Plain Bearing 6x18x6.75/9 Miniature Plain BearingsPB6 Spherical Plain Bearing 6mm x 18mm x 6. 75mm 9mm PB6 Spherical Plain Bearing, PB6 consists of a spherical 6mm bore 9mm wide inner ring, an outer ring of 18mm diameter 6. 75mm wide, and in between a copper alloy bushing. Item: PB6 Ball Bearing Type: Spherical Plain Bearing inner Diameter (ID): 6mm outer diameter (OD): 18mm outer ring width: 6. 75mm inner ring width: 9mm Size: 6 x 18 x 6. 75 9 mm Quantity: One Bearing Dynamic Load Rating: 430 KGF