This is a linear recirculating roller bearing unit designed for guided linear motion along a shaft or rail, using rollers with spacer elements to reduce friction and roller-to-roller contact. The unit has a width of 52.0 mm and a height of 38.0 mm, with a net mass of 1.58 kg. Basic dynamic load rating is 179000.0 N, allowing the unit to carry substantial radial loads during linear travel. End face lubrication connectors allow grease to be fed directly into the roller path, supporting relubrication without disassembly of the unit. The use of spacer elements between rollers reduces mutual friction and wear, contributing to smoother running and more consistent load distribution along the travel path. The construction is suited to applications requiring precise linear guidance under continuous loading, where accessible relubrication points simplify maintenance intervals.