SB201 Bearing 12mm Bore Insert Mounted BearingSB201 Ball Bearing Insert bore (with set screws) 12mm Inner Diameter Bearing SB201 Ball Bearing Insert, bore (with set screws). The inner diameter is 12mm, the outer diameter is 40mm and the width is 22mm. SB201 ball Bearing Ball Bearing Insert Quantity: 1 Bearing Basic Load (Cr): 2,750 LBS Basic Load (Cor): 1,072 LBS Dimensions d D Bi Be r n m G 12mm 40mm 22mm 12mm 1mm 6mm 16mm 4. 5mm