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Robotics terms

Repeatability

Repeatability describes how closely a robot can return to the same position under the same programmed conditions. In cobot specifications it is usually expressed in millimetres, such as +/-0.03 mm, and it is different from absolute accuracy, which measures closeness to a commanded real-world coordinate.

Schematic diagram showing repeated robot approach points clustered around a target position.
Spread across repeated approaches

Typical range on BotNots

+/-0.02 to +/-0.1 mm

The current BotNots comparison table lists repeatability values from +/-0.02 mm to +/-0.1 mm across the compared cobot models. These are manufacturer-sourced screening values and still depend on the complete cell setup.

Source: Cobot comparison table

Why it matters

Repeatability affects welding path consistency, machine loading, inspection, assembly and packaging quality. A tight value is useful only when tooling, fixtures, part presentation and process forces are also controlled, so the application context matters as much as the datasheet number.

Where you'll see this

Repeatability by applicationComparison table

Related terms

DOF

The number of independent axes a robot can move, commonly six for industrial cobot arms.

TCP Speed

The movement speed of the tool center point at the robot wrist or mounted tool.

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