Described is a self-propelled work device (1), comprising at least one motor-driven operating portion (10), movement means (20) comprising at least one pair of driving wheels (21) rotatable about a shared axis of rotation (X) and configured to move the operating portion (10) along a work surface (100), connecting means (40) configured for connecting together the operating portion (10) and the movement means (20) in such a way as to allow a relative movement between them. The operating portion (10) can rotate independently relative to the movement means (20) about an axis of oscillation (T) positioned perpendicularly to the axis of rotation (X).
