Compact rail, the world`s most versatile slider system, which is offered by rollon spa, italy. The compact rail system began with the t-rail, which provides self-alignment of the rail due to its countersunk fixing holes. As a further development, the u-rail was designed with its flat raceways to allow lateral freedom for a pair of rail,therefore it providesa self-alignment solution to the common problem of transversal rail misalignment. Striving for an even more flexible solution, the k-rail has been developed and has specially designed profiled racewasys that together with its special slide allows a certain rotation while still offering a precise movement. Offers a fully self-aligning solution is offerd by the revolutionary combination k/u-rail system . Rotation is allowed by the system in both sides and lateral displacement in one. The unique k/u-rail system is the worlds only real self-aligning system, a system which also features high load and moment capacities, long life and good linear precision.