220 mm x 400 mm x 108 mm ISO N2244 cylindrical roller bearings

The online 220 mm x 400 mm x 108 mm ISO N2244 cylindrical roller bearings parts store gives 1140 kN Fatigue load limit Pu you immediate access to a NTN BEARING CORP.OF AMERICA selection 220 mm x 400 mm x 108 mm of more than 1.4 million new, used, Tr 630x6 G remanufactured.

What is N2244 bearing interchange？