Abstract: A wheel assembly comprises at least two wheels (9) rotatable along a contact surface (2) and equally spaced on a carrier member (8) movably connected with a frame, e.g. a portion of a wagon body, a vehicle chassis, a container or a conveyor. The invention makes it possible for the frame to continue to move horizontally without any vertical changes when the wheels (9) pass over irregularities (12) on the contact surface. The carrier member (8) is continuously movable in a plane which, in principle, is perpendicular to the contact surface. Circular support members (13), concentric with the wheels, cooperate with support surfaces on the frame.