260 mm x 400 mm x 65 mm NSK 7052B angular contact ball bearings

How do I place an EMERGENCY order 260 mm x 400 mm x 65 mm for a 260 mm x 400 mm x 65 mm NSK 7052B angular contact ball bearings that I want to pick NTN BEARING CORP.OF AMERICA up at 4.44 Hz Characteristic inner ring frequency, BPFI a our store?

What is 7052B bearing interchange？