50 mm x 78 mm x 20 mm NTN NAO-50×78×20 needle roller bearings

50 mm x 78 mm x 20 mm NTN NAO-50×78×20 needle roller bearings manufacturer and global Not Rated precision rating: supplier of reliable ball and roller ... 50 mm x 78 mm x 20 mm NTN NAO-50×78×20 needle roller bearings Industries 50 mm x 78 mm x 20 mm Products Manufacturing & ISO BEARING-SINGAPORE (PTE)LTD. Engineering and Agricultural Bearings designed to meet the unique requirements of our targeted industries.

What is NAO-50×78×20 bearing cross reference？