An industrial robot includes a first link, a second link, and a joint connecting the first and second links. The joint includes a main body coupled to the first and second links, a first actuator mounted on the main body to rotate the first link, a second actuator to rotate the main body relative to the second link, a number of cables connected to the second actuators, a protective cover secured to the main body to receive the first and second actuators and the cables, and a number of fasteners fixing the protective cover to the main body.