Doosan Robotics A0509

The A0509 is Doosan's compact six-axis cobot, rated for a 5 kg payload across a 900 mm reach. At 21 kg it's light enough for a single technician to lift onto a bench, and its mounting list covers any orientation. That combination suits small cells where a floor-standing arm won't physically fit.

With 0.03 mm repeatability, it holds position tightly enough for machine-tending and light assembly on small parts. As a collaborative arm it's built to work beside people, and hand-guiding lets an operator teach waypoints by moving it directly. That keeps setup quick when the same arm gets repurposed across several short-run jobs.

The 900 mm reach is long for a 5 kg class, giving the arm room to serve two machines, or a machine and an outfeed, from one base position. In a cramped cell that envelope is often what makes tending work practical without shuffling the robot around.

The record lists a CS-04 DC controller and an IP54 body. Collaborative speed limits keep it slower than a fenced industrial arm at full tilt, which is the price of power-and-force-limiting operation. Plan cycle times around that ceiling rather than around peak joint speed.

It lands in the same entry bracket as the UR3e and KUKA's LBR iisy 3, aimed at shops standing up their first cobot cell. Introduced in 2019, it's a mature platform rather than the newest option in that class.

Choose the A0509 if you want a light, benchtop-portable arm for tending and small-part assembly and you value tight repeatability over raw throughput. Skip it if your line needs to swing heavy tooling or hit industrial cycle times, because the modest payload and collaborative limits will cap what it can do.