Deep groove ball bearing 6344-M-C3 carries radial load in a single row of balls guided by a solid brass cage (M), which keeps ball spacing stable under the higher speeds this size allows. Bore diameter is 220.0 mm, outside diameter 460.0 mm, width 88.0 mm, and net mass 73.7 kg. Limiting speed is rated at 2460.0 1/min, reference speed at 1960.0 1/min. Internal clearance is C3 (Group 3), a wider-than-normal clearance range. The C3 clearance compensates for the fit-up tightening that occurs from interference fits and for thermal expansion of the shaft during operation, which is relevant given the mass and size of this bearing. The solid brass cage supports reliable ball guidance at the higher end of the permissible speed range and adds mechanical strength under heavier loading conditions. As a single row deep groove ball bearing, it takes radial load together with moderate axial load in both directions, and it requires lubrication to be supplied and maintained by the surrounding housing arrangement, since it is an open bearing without integrated sealing or shielding.