This linear ball bearing enables low-friction linear motion along a shaft, with a bore diameter of 20.0 mm, outside diameter of 32.0 mm, and a net mass of 74.21 g. It is of open, machined design, sealed on all sides, and fitted with a relubrication facility, allowing grease to be replenished during service without disassembly. The all-side sealing keeps contamination away from the ball tracks while retaining lubricant inside the unit, supporting steady operation over extended running periods. A corrosion-resistant design is possible for this bearing, which is relevant where the shaft or housing environment exposes the unit to moisture. The open construction requires a supported shaft, and the relubrication facility means maintenance intervals can be handled without full replacement.