Provides linear motion on a cylindrical shaft through recirculating ball tracks housed in a machined outer sleeve. Bore diameter is 40.0 mm, outside diameter 62.0 mm, and net mass 0.599 kg. The unit is sealed on all sides, protecting the ball tracks from contamination while retaining lubricant within the housing. A relubrication facility allows grease to be replenished without dismantling the bearing from its housing, supporting continued operation under linear load. The machined construction and full sealing suit applications requiring precise axial guidance along a shaft, and the design permits a corrosion-resistant version where increased resistance to moisture or aggressive media is required.