Roller linear guide rail pair

The invention relates to a roller linear guide rail pair. The invention has the technical scheme that the roller linear guide rail pair comprises a slide block, isolating chains with rollers are installed in a roller path and a reverse channel of the slide block, and the side wings of the isolation chains are positioned in a groove of the slide block. As the isolation chains move together with the rollers, the roller linear guide rail pair has the functions of oil storage and roller isolation, thereby effectively avoiding collision among the rollers, prolonging the service life of a product and keeping the performance of the product.