SCARA Robot

A SCARA (Selective Compliance Assembly Robot Arm) robot has two parallel rotary joints for horizontal motion and a vertical axis, making it rigid vertically yet compliant horizontally and well suited to fast pick-and-place and assembly.

A typical SCARA has four axes: two rotary joints that move the arm in the horizontal plane, a linear vertical axis and a rotation about that vertical axis for the tool. The acronym is also expanded as Selective Compliance Articulated Robot Arm. The arm is stiff in the vertical direction but selectively compliant in the horizontal plane, which helps when inserting parts into holes with small alignment errors.

SCARA robots are widely used in electronics, small-parts assembly, medical device and consumer goods production for pick and place, screwdriving, dispensing, insertion and packaging. Their compact footprint and high speed suit benchtop cells and lines with short cycle times.

They cannot tilt the tool out of the horizontal plane, so tasks needing full orientation require an articulated robot. Selection considers reach, vertical stroke, payload, cycle time and repeatability. As with any industrial robot, safeguarding follows a risk assessment under ISO 10218.

Key points

Typically four axes: two horizontal rotary joints, a vertical axis and tool rotation
Rigid vertically and compliant horizontally, which aids insertion tasks
Common in electronics, small-parts assembly and packaging
Cannot tilt the tool, unlike a six-axis articulated arm

Where AiVibe comes in

AiVibe designs and manufactures the AiAmbA AI Factory, whose edge devices and AI agents let people talk to robot controllers in plain language. Robotics perception is an AiAmbA use case, and robot safety functions follow ISO 10218 and never depend on the AI layer.

Explore AiVibe’s work in Robotics & Physical AI →

Related terms

Terms that refer to SCARA Robot

Degrees of Freedom (DOF)Robotics & Physical AI