This linear ball bearing enables low-friction linear motion along a shaft, using recirculating ball tracks in an open design machined construction. Bore diameter is 30.0 mm, outside diameter 47.0 mm, and net mass is 0.256 kg. The unit KBO30-PP-AS is sealed on all sides, protecting the ball tracks from contamination while retaining lubricant inside the bearing. The design includes a relubrication facility, allowing grease to be replenished during service without dismantling the unit from the shaft. Sealing on all sides makes the bearing suitable for applications where dust or particle ingress must be limited along the linear travel path. A corrosion-resistant version of this design is possible, which extends the range of operating environments where the bearing can maintain smooth linear guidance.