105 mm x 145 mm x 20 mm NTN 6921LLU deep groove ball bearings

Various NTN BEARING CORP.OF CANADA LTD. deep groove ball bearings types and 105 mm x 145 mm x 20 mm sizes to accommodate your 105 mm x 145 mm x 20 mm NTN 6921LLU deep groove ball bearings requirements.

What is 6921LLU bearing cross reference？