55 mm x 140 mm x 33 mm Loyal N411 cylindrical roller bearings

We 0.813 Inch | 20.65 M B Provide Extensive 55 mm x 140 mm x 33 mm Loyal N411 cylindrical roller bearings AST BEARING OF AMERICA CORP. Selection And Competitive Wholesale Pricing. 55 mm x 140 mm x 33 mm

What is N411 bearing cross reference？