... axial two direction of displacement. NU type of bearing's outer two guard, inner ring no guard. Can also ... May have a certain amount of unilateral axial load. NF type of unilateral have outer rim, the inner ring ... mNUNJNUPdDBNU204NJ204NUP204204714NU204ENJ204ENF..E, NU..E, NJ..E, NUP..E series