The invention relates to a point machine for movable frogs (1) comprising at least one cylinder-piston unit (5) having a defined, pre-set piston stroke. Said cylinder-piston unit (5) is connected to bearings (6), which can be displaced in the axial direction of the piston stroke, and is connected to a fixed substructure for setting a defined central position of the piston stroke and of the driver for the moveable frog (1). The driver for the moveable frog (1) is coupled to the cylinder-piston unit (5) while interconnecting stops (9) that can be displaced in an axial direction.