1,397 mm x 4,762 mm x 1,984 mm NSK FR 1 deep groove ball bearings

1,397 mm x 4,762 mm x 1,984 mm NSK FR 1 deep groove ball bearings manufacturer and global supplier of reliable ball and roller ... 1,397 mm x 4,762 mm x 1,984 mm NSK FR 1 deep groove ball bearings Industries Products Manufacturing & Engineering and Agricultural NTN BEARING CORP.OF CANADA LTD. Bearings designed to meet the unique requirements of our targeted industries. 1,397 mm x 4,762 mm x 1,984 mm

What is FR 1 bearing cross reference？