This linear ball bearing guides linear motion along a shaft, combining a bore diameter of 40.0 mm with an outside diameter of 62.0 mm and a net mass of 0.3 kg. It is built in the lightweight range with an open design construction and is sealed on all sides, protecting the ball tracks from contamination. A relubrication facility allows grease to be replenished without removing the bearing from the shaft, keeping the raceways lubricated over extended operation. The construction permits an adjustable angle, compensating for slight shaft misalignment, which suits applications requiring smooth, low-friction linear travel with sealed, open-frame protection.