A door drive, in particular a swing door drive, - with a drive unit, which can be coupled to a door via an output shaft and is disposed in a housing; - with a motor being in driving connection with the drive unit, and - with a spring energy storage device arranged in the housing and being coupled to the motor and to the drive unit; and - a hydraulic pump being provided, which is in driving connection with the motor and is in hydraulic connection with a hydraulic compartment, representing a reservoir volume, and with a separate pressure compartment, which is associated to the spring energy accumulator, - the drive unit being configured as a cam drive with a cam-plate assembly, - which includes a cam disc arranged on the output shaft and two force transmitting rollers (10, 11) which are arranged on both sides of the output shaft and rest on cam tracks of the cam disc, and - the cam-plate assembly being arranged in the area of the largest diameter of a reception compartment of the housing for the drive unit around the output shaft, wherein - the energy transmitting rollers (10, 11) have individual rollers (10', 10" or 11', 11"), which are arranged spaced apart in a longitudinal direction of the output shaft and cooperate with associated, spaced apart cam discs (8', 8") of the cam disc, characterized in that - the force transmitting rollers (10, 11) are arranged in the cam-plate assembly, which is connected to the spring tensioning piston via a piston rod, wherein the piston rod extends through a seal, and - the cam-plate assembly includes a pair of bolts (18", 18"'), which are fixed via appropriate bolt attachments and thereby form a traction-pressure-connection between the pistons, wherein a torsion protection of the opening piston and of the dampening piston is achieved. - with a drive unit, which can be coupled to a door via an output shaft and is disposed in a housing; - with a motor being in driving connection with the drive unit, and - with a spring energy storage device arranged in the housing and being coupled to the motor and to the drive unit; and - a hydraulic pump being provided, which is in driving connection with the motor and is in hydraulic connection with a hydraulic compartment, representing a reservoir volume, and with a separate pressure compartment, which is associated to the spring energy accumulator, - the drive unit being configured as a cam drive with a cam-plate assembly, - which includes a cam disc arranged on the output shaft and two force transmitting rollers (10, 11) which are arranged on both sides of the output shaft and rest on cam tracks of the cam disc, and - the cam-plate assembly being arranged in the area of the largest diameter of a reception compartment of the housing for the drive unit around the output shaft, wherein - the energy transmitting rollers (10, 11) have individual rollers (10', 10" or 11', 11"), which are arranged spaced apart in a longitudinal direction of the output shaft and cooperate with associated, spaced apart cam discs (8', 8") of the cam disc, - the force transmitting rollers (10, 11) are arranged in the cam-plate assembly, which is connected to the spring tensioning piston via a piston rod, wherein the piston rod extends through a seal, and - the cam-plate assembly includes a pair of bolts (18", 18"'), which are fixed via appropriate bolt attachments and thereby form a traction-pressure-connection between the pistons, wherein a torsion protection of the opening piston and of the dampening piston is achieved.