UC204 20mm Axle Bearing Insert Mounted BearingsUC204 Mounted Bearing 20mm x 47mm x 31mm 12mm mounted Bearing UC204, the inner diameter is 20mm, the outer diameter is 47mm, the inner ring width is 31mm and the outer ring width is 16mm, this is a popular size that could be used in many applications. Item: UC204 Bearing Type: Mounted Bearing Bearing Size: 20mm x 47mm x 16mm 31mm Inner Diameter: 20mm Outer Diameter: 47mm Inner Ring Width: 31mm Outer Ring Width: 16mm Dynamic load rating Cr: 56937 N