Choose a collaborative robot (cobot) when payloads are under about 20 kg, cycle times are relaxed, and people must work close to the robot without full guarding. Choose a conventional industrial robot when you need higher speed, payload, or reach — welding, palletizing, and foundry work almost always favour industrial robots, with the safety handled by fencing and area scanners.
The cobot-versus-industrial-robot question comes up in almost every first automation conversation, and the honest answer is that it is a process decision, not a technology preference. Both are six-axis arms programmed in similar ways; what differs is speed, payload, and how safety is achieved.
Where cobots genuinely fit
Cobots shine when the task is light, the takt time is forgiving, and the cell must share floor space with people. Machine tending on small CNC parts, screw driving, light assembly, glue dispensing on small products, and quality inspection are typical wins. Because a cobot can run with force-limited safety instead of hard guarding, the cell footprint is smaller and redeployment between jobs is faster.
The trade-off is speed. To stay safe around people, a cobot in collaborative mode moves at a fraction of an industrial robot's speed. Many buyers discover that once the application demands guarding anyway — sharp parts, hot parts, heavy grippers — the cobot's main advantage is gone and a faster industrial arm would have cost the same or less.
Where industrial robots win
Welding, palletizing, deburring, foundry handling, and any application above roughly 20 kg of combined part-plus-gripper weight belong to conventional industrial robots. They hold path accuracy at high speed, survive harsh environments, and their per-unit cost at higher payloads is significantly better than collaborative alternatives.
Safety for industrial cells is a solved engineering problem: fencing, light curtains, area scanners, and safety PLCs are standard scope in any serious integration project, and modern safety-rated monitored stop functions let operators load parts without a full cell restart.
A practical selection rule
Start from the process: required cycle time, payload including tooling, reach, and environment. If the numbers fit a cobot and human interaction is genuinely required, a cobot is the right tool. If the numbers are marginal, choose the industrial robot — production volumes tend to grow, and the robot that meets today's cycle time with no margin will miss next year's. A platform-agnostic integrator can run this comparison in simulation before you commit to either.