A slide system for machine tools is provided, comprising a base member, at least one guide rail held on the base member and extending in a longitudinal direction, and a slide on the guide rail with at least one guide carriage. The guide rail has a guiding area and a base area. One of the base area or the base member has a receiving means extending transversely to the longitudinal direction of the guide rail and the other of the base area or the base member has an insert member insertable into the receiving means in a direction transverse to the longitudinal direction of the guide rail. A clamping element is provided for clamping the insert member in the receiving means. The insert member is fixed in a form-locking manner by the receiving means and the clamping element in all directions extending transversely to the longitudinal direction.