Patent ID: 8585288

Claim:
A linear motion guide unit, including a guide rail having a flat surface extending in the longitudinal direction of the guide rail, a slider straddling and sliding on the guide rail, a sliding mechanism for allowing continuous arrangement and rolling movement of rolling elements contained in the slider, an inner sealing member mounted on an inner surface of the slider making contact with the flat surface of the guide rail for preventing foreign substances from entering the sliding mechanism, said inner sealing member having end faces, and rubber-made end seals each of which straddles the guide rail, is mounted on an end face of the slider, and has lips formed integrally with the end seal and making contact with the guide rail, the linear motion guide unit, comprising auxiliary lips each provided in positions on an inclined face formed on each of the lips of each of the end seals, facing and making contact with each of the end faces of the inner sealing member to close gaps that would otherwise be created by a level difference between the end faces of the inner sealing member and the inclined face of the lip if the auxiliary lips were not provided, in order to prevent foreign substances from entering the sliding mechanism.