Which robot is noted for being good for working with smaller sized parts?

• A. polar
• B. cylindrical
• C. cartesian
• D. SCARA

Answer: (C)

Precise 3D positioning with linear axes lets you place a gripper at exact coordinates in space, which is essential when working with small parts. A Cartesian robot uses three orthogonal linear axes—X, Y, and Z—so the end effector can move in straight lines to every point in a rectangular work envelope. This simplicity yields very repeatable, high-accuracy positioning and easy calibration, so tiny components can be picked and placed repeatedly without cumulative angular errors. The predictable motion also makes it easy to align multiple small parts in a grid or fixture, improving throughput while maintaining tight tolerances. While other arm types have strengths for specific tasks—fast planar picking or broader reach—the direct, linear movement of a Cartesian system is especially well-suited to handling small parts that require precise, repeatable placement.