There are few methods allowing to increase accuracy of relative interaction in assembly, but the method with application of vibrations is the most reliable to achieve this goal. In given article is examined the vibration assembly on the rotary machines in which details are arranged on two rotors and are brought to an assembly position with unequal linear speeds. One from details are imparted the oscillatory movements in a cross-section direction – in plane of rotation of rotors, but the effort of assembly is attached to details perpendicularly to this plane. This method of assembly does not require a precise orientation of details relative to each other.