Pull-out guide system for drawers, having a basic-structure rail, a drawer rail and, if appropriate, having a center rail arranged between these two rails. The load of the drawer is transmitted by way of a first rolling-contact body and at least one second rolling-contact body, and the first rolling-contact body has a smaller diameter than the at least one second rolling-contact body. The drawer rail is designed such that, when the drawer is in the closed state, the first rolling-contact body is subjected to loading by the drawer rail and, when the drawer is opened, the first rolling-contact body is relieved of the loading of the drawer rail.