300 mm x 420 mm x 56 mm ZEN 61960 deep groove ball bearings

We work closely with our 300 mm x 420 mm x 56 mm ZEN 61960 deep groove ball bearings manufacturing AMERICAN NTN BEARING LTD partners to bring the Non-expansion Expansion / Non-expansion best value 300 mm x 420 mm x 56 mm to customers.

What is 61960 bearing cross reference？