Carries axial loads acting in one direction only, transmitting force through a set of balls guided by a solid brass cage (MP). The bearing has a height of 31.0 mm and a net mass of 2.259 kg. Limiting speed is rated at 2550.0 1/min, with a reference speed of 2060.0 1/min. The single-direction design of the deep groove ball bearing means the shaft and housing washers must be mounted with correct orientation relative to the load path, as no support is provided against axial force from the opposite side. The solid brass cage keeps ball spacing stable at the stated speed ratings and withstands the centrifugal effects encountered at these values. As with this bearing type, radial loads are not supported, so proper alignment of mating surfaces is required to keep loading purely axial.