40mm Bore SB208 Axle Insert Ball Mounted BearingSB208 ball Bearing Insert Cylindrical bore (with set screws) 40mm Inner Diameter Bearing SB208 Mounted Axle Bearing 40mm Bore. The inner diameter is 40mm, the outer diameter is 80mm and the width is 34mm. SB208 Bearing Mounted Axle Bearing Quantity: 1 Bearing Basic Load (Cr): 29,100 N Basic Load (Cor): 17,400 N Dimensions d D B C r (min) S S1 S2 40mm 80mm 34mm 18mm 1. 1mm 9mm 25mm 8mm