Anti-friction bearing for linear movements

An anti-friction bearing for linear movements comprising a bearing body (10) which is guided movable on a rail (12) in a longitudinal direction thereof, the bearing body (10) having legs (18a, b) accommodating at least a part of the rail (12) between them and a web (20) connecting these legs (18a, b) integrally to one another, at least one rolling body cycle (A-D) being allocated to each of the legs (18a, b), each of the rolling body cycles (A-D) having a load-transmitting rolling body row (A1-D1) in engagement with a load-receiving running path (B13, D13) of the respective leg (18a, b) and with a running path (A12, B12, C12, D12) at a side face of the rail (12), said side face being adjacent to said leg (18a, b), the load-transmitting rolling body rows (A1-D1) being preloadable between the respective allocated running paths (B13, D13;

• A12-D12) and this preload being adjustable by preloading means (30), characterized in that the preloading means (30) are disposed in the range of the web (20) with a direction of effect substantially perpendicular to the longitudinal direction of the rail (12) and substantially parallel to a connecting plane (VE1, VE2) of two load-transmitting rolling body rows (A1-D1) lying at either side of the rail (12), and which are designed to upset the web (20) in the direction of effect.