The QJ316-N2-MPA is a single-row four-point contact bearing designed to carry axial loads in both directions together with radial loads within one row of balls. Bore diameter is 80.0 mm, outside diameter 170.0 mm, width 39.0 mm, and net mass 4.463 kg. The bearing is fitted with a solid brass cage (MPA) and features holding grooves in the outer ring, allowing the bearing halves to be kept together during handling and mounting. Limiting speed is 7000 1/min, reference speed 3750 1/min. The four-point contact design lets a single row of balls take up combined axial and radial loading, which is useful where shaft space is limited and two separate bearings would otherwise be needed for opposing axial forces. The solid brass cage guides the balls securely and supports operation up to the stated reference speed of 3750 1/min, while the holding grooves simplify separation and reassembly of the bearing rings during installation.