Fully electric rotary drive for positioning tasks in handling technology, preferably for swiveling hand screwdrivers or screw spindles by a defined angle. The rotary drive has a gear ratio of i=1150 and a maximum counter torque of 400 Nm can be applied. The motor is mounted on the left / right side of the rotary drive. The connection module can be used to mechanically connect two part-turn actuators. 15-pin connection cable with straight connector (M16) and open cable end with a length of 0.5 m - 10 m for the rotary drive.