Device for delivering, metering and mixing liquid paint components, comprising (a) a paint supplying device, which i. comprises two or more paint reservoirs with in each case at least one outlet opening for different paint components to be mixed with one another; or ii.comprises one paint reservoir, which comprises two chambers (11,12) or more chambers for different paint components to be mixed with one another, each chamber having at least one outlet opening, (b) a metering device, which is arranged downstream of the paint supplying device and has a number of inlet openings for the paint components corresponding to the number of outlet openings of the paint reservoirs or the paint reservoir, the metering device being designed such that the volume flows of the paint components to be mixed with one another entering via the inlet openings are forcibly delivered without an external drive separately from one another by way of rotating delivery devices serving as metering units, the delivery devices being connected to one another in such a way that their rotational speeds are in fixed ratios in relation to one another, and the metering device having separate outlet openings for the then metered volume flows of the paint components, and (c) a static mixing device, which is arranged downstream of the metering device and has a number of inlet openings for the metered volume flows corresponding to the number of outlet openings of the metering device, and the outlet of which is formed in such a way that it can be connected to a paint spray gun, characterized in that each rotating delivery device has a pair of wheels and at least one wheel of the pair of wheels is connected by way of a common spindle to the corresponding wheel of the pair of wheels located in the adjacent delivery device, so that their rotational speeds are in fixed ratios in relation to one another and the wheels of the pairs of wheels being oval wheels. (a) a paint supplying device, which i. comprises two or more paint reservoirs with in each case at least one outlet opening for different paint components to be mixed with one another; or ii.comprises one paint reservoir, which comprises two chambers (11,12) or more chambers for different paint components to be mixed with one another, each chamber having at least one outlet opening, i. comprises two or more paint reservoirs with in each case at least one outlet opening for different paint components to be mixed with one another; or ii.comprises one paint reservoir, which comprises two chambers (11,12) or more chambers for different paint components to be mixed with one another, each chamber having at least one outlet opening, (b) a metering device, which is arranged downstream of the paint supplying device and has a number of inlet openings for the paint components corresponding to the number of outlet openings of the paint reservoirs or the paint reservoir, the metering device being designed such that the volume flows of the paint components to be mixed with one another entering via the inlet openings are forcibly delivered without an external drive separately from one another by way of rotating delivery devices serving as metering units, the delivery devices being connected to one another in such a way that their rotational speeds are in fixed ratios in relation to one another, and the metering device having separate outlet openings for the then metered volume flows of the paint components, and (c) a static mixing device, which is arranged downstream of the metering device and has a number of inlet openings for the metered volume flows corresponding to the number of outlet openings of the metering device, and the outlet of which is formed in such a way that it can be connected to a paint spray gun, characterized in that each rotating delivery device has a pair of wheels and at least one wheel of the pair of wheels is connected by way of a common spindle to the corresponding wheel of the pair of wheels located in the adjacent delivery device, so that their rotational speeds are in fixed ratios in relation to one another and the wheels of the pairs of wheels being oval wheels.