This is a single row cylindrical roller bearing with cage, design NJ, featuring two ribs on the outer ring and one rib on the inner ring, which makes it a semi-locating bearing. Bore diameter is 17.0 mm, outside diameter 40.0 mm, width 12.0 mm, and net mass is 0.072 kg. The limiting speed is 26500 1/min, with a reference speed of 15300 1/min. It is built to the E design and fitted with a TVP2 polyamide cage. The rib arrangement allows the bearing to carry axial loads in one direction while accommodating axial displacement in the other, making it suitable for locating one bearing position on a shaft while leaving the opposite bearing free to float. Radial internal clearance is in group CN (normal), giving standard running clearance for general mounting conditions. The polyamide cage design supports smooth roller guidance at higher speeds, and the separable inner and outer rings simplify mounting and dismounting.