Patent ID: 8347753

Claim:
A robot arm for an industrial robot, comprising a first arm part and a second arm part, wherein the second arm part is rotatably journalled in the first arm part for rotation about a first axis of rotation, wherein the robot arm further comprises a tubular member arranged with a first end rotatably journalled in the first arm part in a first and second bearing arranged at a distance from each other along the first axis of rotation and with a second end secured to the second arm part, such that the tubular member forms a continuous channel intended to receive a cable harness extended therethrough, wherein the second arm part comprises a first drive unit configured to rotate a wrist unit about a second axis of rotation, wherein the first drive unit is arranged with a drive shaft thereof parallel to and offset with respect to the first axis of rotation, wherein the second arm part comprises a second drive unit, wherein the second drive unit is arranged with a drive shaft thereof parallel to and offset with respect to the first axis of rotation, and wherein the second drive unit is adapted to rotate a turn disc in the wrist unit about a third axis of rotation.