Linear bearings and linear bearing and housing units are available in the compact, light, heavy duty, machined and plain bearing range. The bearings can support high loads while having a relatively low mass and allow the construction of linear guidance systems with unlimited travel. Each series has quite specific characteristics that makes it particularly suitable for certain applications. These may include, for example, requirements for compensation of misalignments, lowfriction running, high accelerations and travel speeds or long operating life. The range, which has been constructed and expanded in accordance with a modular concept, provides the best technical and economic solution, in relation to each application, for bearing arrangements with shaft guidance systems.