1. Product Overview NU 217 ECM single row NU-type cylindrical roller bearing, standard metric dimension 85×150×28mm. Model Code Explanation NU: Outer ring with double integral flanges, inner ring flange-free separable design; inner ring can slide axially bidirectionally to absorb shaft thermal expansion 217: Light-medium heavy load 2-series cylindrical roller bearing size specification E: Explorer optimized logarithmic crowned roller & raceway profile, extended effective