Deep groove ball bearing 61960-M-C5 carries radial loads in a single row of balls guided by a solid brass cage (M). Bore diameter is 300.0 mm, outside diameter 420.0 mm, width 56.0 mm, and net mass reaches 23.8 kg. Limiting speed is rated at 2600.0 1/min, with a reference speed of 1890.0 1/min, giving a clear frame for thermal and mechanical limits during operation. The radial internal clearance falls into group C5, larger than standard clearance, which suits applications with thermal expansion of the shaft or housing and allows for tighter fits without loss of running clearance. The solid brass cage keeps ball spacing stable at higher speeds and reduces friction losses compared to pressed cage designs. As an open bearing without integrated seals, it requires external sealing and a separate lubrication arrangement suited to the operating speed and load conditions.