What is the difference between a robotic arm and a cobot?
A robotic arm is the mechanical manipulator. A cobot is a robot designed with capabilities that can support collaborative applications involving people. The terms overlap: a cobot can be a robotic arm, and many robotic arms operate in fully separated cells. The distinction concerns how the complete system is designed and operated.
What this means in practice
Collaborative capability does not make every installation safe without safeguards. The tool, workpiece, fixtures, motion, and surrounding equipment all affect risk. A sharp part or hazardous process can require separation even when the arm itself supports force-limited operation.
Evaluate the operating arrangement
People may interact with automation in several ways: loading a station while the robot is separated, approaching under a monitored arrangement, or performing a defined collaborative task. These workflows have different implications for access, production speed, and protective measures. The product label alone does not determine the appropriate arrangement.
Compare the complete cycle with the expected human activity included. Frequent operator access can influence productive time and the cell layout. A qualified assessment should examine the actual tool, load, surrounding machinery, and foreseeable interventions. Changes to any of these may require the arrangement to be reassessed.
Key points
Compare the validated operating arrangement, not just the marketing label.
Check available safety functions and their documented limits.
Include human access, tools, and process hazards in the application assessment.
Practical example and next step
A cobot can be useful when operators frequently load fixtures or change products. A separated industrial cell may suit higher-throughput operation. Select the arrangement that meets the actual workflow and have the complete application assessed and validated before production.