35 mm x 72 mm x 23 mm ISB 2207 KTN9 self aligning ball bearings

What is 77.00 KGS Weight: 35 mm x 72 mm x 23 mm ISB 2207 KTN9 self aligning ball bearings in mechanical engineering? self aligning ball bearings 2950 Static Load Rating (kN): Manufacturing NTN BEARING CORP.OF AMERICA Service 35 mm x 72 mm x 23 mm . Upload your CAD file for an instant.

What is 2207 KTN9 bearing interchange？