Cobot (collaborative robot)

A cobot — short for collaborative robot — is a robotic arm designed to share its workspace safely with humans. The big trick: it doesn't need a safety cage. A human can stand next to it, hand it parts, work alongside it. If the cobot bumps the human, it stops instantly without doing harm.

That changes the economics of factory floors completely.

How a cobot is safe

A traditional industrial robot is dangerous because it's fast and strong — it can swing a heavy welding torch in a tight arc without knowing or caring what's in the way. You keep humans out with physical fences, light curtains, and floor mats wired to emergency stops.

A cobot is engineered the opposite way:

• Force-and-torque sensing in every joint. If anything resists the motion, the cobot detects the resistance instantly and stops.
• Limited power. Motors are sized so that even at full speed, the impact energy on a human is below an internationally-standardised safety threshold (ISO TS 15066).
• Rounded mechanical design. No sharp edges, no pinch points.
• Slow speeds. Most cobots top out at 1 m/s end-effector speed; many run much slower.

The combination means a human can poke a moving cobot and the worst that happens is a bruise. Compare that to an old-school industrial robot, which could take a head off.

What they're good for

Cobots fill the small-batch, high-mix segment that's awkward for traditional robotics:

• Loading parts into a CNC machine for a 3-week production run
• Packing custom-mix gift boxes at a small e-commerce warehouse
• Pick-and-place in a research lab
• Assembly tasks that require human dexterity and robot precision side by side

A traditional robot is overkill for these — the cage and integration cost more than the work it saves. A cobot can be set up in a day, programmed by demonstration (just guide its arm through the motion you want), and start paying for itself in weeks.

The market

• Universal Robots (Denmark, owned by Teradyne) created the cobot category in 2008 and still leads — roughly 50% market share.
• Doosan Robotics (South Korea), Techman (Taiwan), Franka Emika (Germany), and Yaskawa Motoman HC series are the other major players.
• Chinese manufacturers (AUBO, Han's Robot) are scaling fast.

Cobots are roughly 7% of all industrial-robot units shipped in 2026, but the fastest-growing segment — about 25% annual growth.

Where they don't fit

Cobots are slow. For high-volume, high-repetition jobs (welding 5,000 car doors a shift), traditional industrial robots are 5-10× more productive. Cobots and industrial robots are complements, not competitors.

Industrial robotics' big-iron cousin is the industrial robot — same arm shape, very different safety philosophy.