A collaborative robot, or cobot, is an industrial robotic arm designed to work safely alongside human operators without the safety cages required by traditional industrial robots. This guide explains how cobots work, where they fit best, and what to check before buying one.
How Cobots Differ From Traditional Industrial Robots
Traditional industrial robots are typically fast, heavy-payload machines that must operate behind fencing or light curtains for safety. Cobots trade some top-end speed for built-in force and torque sensing: when the arm encounters unexpected resistance, it slows or stops, allowing it to share workspace with people.
Key Components of a Cobot
- Six-axis arm providing human-like range of motion.
- Force/torque sensors at the joints or wrist for collision detection.
- Control pendant or touchscreen for drag-teach programming.
- End-of-arm tooling — grippers, welding torches, screwdrivers, or dispensing heads.
Common Applications
Cobots are widely used for CNC machine tending, pick-and-place, screwdriving, dispensing, arc welding, and light palletizing — especially in operations where footprint, budget, or changeover speed rule out a full industrial robot cell.
Choosing a Payload Class
Payload requirements should include the tool weight plus the part being handled, with margin for acceleration forces. As a rule of thumb, a 5 kg cobot suits light assembly, 10 kg suits most CNC tending and welding jobs, and 16-20 kg suits palletizing and heavier material handling.
Is a Cobot Right for Your Line?
Cobots are a strong fit when you need flexible deployment, a compact footprint, and the ability to redeploy the same arm across multiple stations. For very high-speed, high-payload production, a traditional industrial robot may still be the better choice.
Want a recommendation for your specific application? Email our engineering team or explore our collaborative robot lineup.