Carries axial loads in a single direction only and cannot support radial load, so correct shaft alignment and a counterpart bearing for radial guidance are required in the assembly. The bearing 51232-MP has a height of 51.0 mm and a mass of 6.535 kg. It is fitted with a solid brass cage (MP), which withstands higher cage loading and allows a limiting speed of 1900.0 1/min and a reference speed of 2350.0 1/min. The single-direction design means the raceway washers must remain seated against each other under load at all times; any reversal of axial force or unloading of the bearing is not permitted. The solid brass cage gives the ball set stable guidance at the stated speed values and is suited to applications where higher operating temperatures or elevated speeds would be a concern for a pressed steel cage. As with axial deep groove ball bearings in general, mounting requires precise perpendicularity between shaft and housing seating faces to avoid additional edge loading on the raceways.