670 mm x 1090 mm x 336 mm NSK 231/670CAKE4 spherical roller bearings

NSK Bearing offers a 670 mm x 1090 mm x 336 mm NSK 231/670CAKE4 spherical roller bearings selection of Non-expansion Expansion / Non-expansion Genuine NSK Bearing at Wholesale Prices. We 670 mm x 1090 mm x 336 mm are ASAHI FORGE OF AMERICA BEARING CORP. a 670 mm x 1090 mm x 336 mm NSK 231/670CAKE4 spherical roller bearings Certified Parts Retailer

What is 231/670CAKE4 bearing cross reference？