Abstract: A power take-off transmission has a power take-off clutch, a hydraulic supply, a hydraulically operable piston for activating a clutch plate set of the power take-off clutch, wherein the hydraulic supply comprises a hydraulic pump, a hydraulic reservoir and a hydraulic cooler and wherein a first hydraulic line hydraulically connects the hydraulic pump to the piston and a second hydraulic line branching off from the first hydraulic line hydraulically connects the hydraulic pump to the hydraulic cooler. In order to improve the cooling capacity and lubrication of the power take-off transmission, it is proposed that the hydraulic supply comprises a third hydraulic line, which hydraulically connects the hydraulic cooler to the clutch plate set, wherein the clutch plate set is hydraulically connected to the hydraulic reservoir.