6 Axis Robot Arms — Star Arm 102 Series

Compare the Star Arm 102 series by control role, servo configuration, reach, payload and assembly option — leader arms for teaching, teleoperation and data collection, follower arms for task execution, and DIY kits for builders who prefer to assemble their own. Choose the right setup for your project, with prices starting at $159.

What 6-Axis and 6-DoF Mean on a Robot Arm

A 6-axis robot arm has six independently driven rotary joints, which gives its end effector six degrees of freedom — three for position (X, Y, Z) and three for orientation (roll, pitch, yaw). Six degrees of freedom is what lets an arm reach a given point in a chosen orientation rather than simply arriving there, which is why a 6-DoF robot arm is the standard choice for teleoperation, imitation learning and manipulation research. Five-axis arms cannot reach every orientation.

Star Arm 102 is a 6+1 DoF platform: six arm joints plus an independently driven gripper, so the end effector can both position and grasp. The LD, HD and FL configurations share the same 6+1 DoF architecture, 420mm reach and 12-bit encoders — the differences are in control role, servo class and whether the unit ships assembled or as a kit.