This deep groove ball bearing transmits axial load in one direction only, using separate washers with raceways and a ball-and-cage assembly guided by a sheet metal cage, designation JP. Overall height is 21.0 mm, mass is 0.25 kg. The limiting speed is 5700 1/min, with a reference speed of 9300 1/min. Because the design supports load in a single direction, the shaft and housing washers must be mounted with correct orientation and the assembly requires a minimum axial load to keep the balls properly guided by the cage. The steel sheet metal cage keeps mass low and allows the stated speed ratings, while the separable washers simplify mounting and dismounting during assembly work. Equivalent designations for this bearing are SKF 51306, NSK 51306, NTN 51306.