This bearing carries axial loads acting in one direction only, transmitting force between a shaft washer and a housing washer through a ball and cage assembly. The design height is 46.0 mm, net mass is 4.265 kg, limiting speed is 2110 1/min, and reference speed is 2700 1/min. The cage is a steel sheet metal type, JP execution. Being a single-direction deep groove ball bearing, it must be mounted where axial load acts consistently in one direction and where radial guidance is provided by a separate bearing, since this design does not accommodate radial loads. The steel sheet metal cage keeps the balls evenly spaced at the stated speed range and supports the specified mass rating. Equivalent designs are available as SKF 51228, NSK 51228, and NTN 51228.