Industrial robot

In an industrial robot having a robot unit comprising a fixed base and movable robot components, said movable robot components including a swivel body having an outerface and mounted on the fixed base so as to swivel about a longitudinal axis, a first robot arm pivotally joined to one end of the swivel body, and a second robot arm pivotally joined to one end of the first robot arm and provided with a robot wrist unit, characterized in that a first driving motor is mounted on said swivel body for swiveling said swivel body on said fixed base, second driving motors are mounted on said swivel body for pivoting said first robot arm on said swivel body and for pivoting said second robot arm on said first robot arm, respectively, and third drive motors are mounted on said second robot arm for driving said wrist unit, each of said motors of said first, second and third motors each having mounted on each, respective, motor an absolute position detecting encoder, and a battery mounted on said outerface of said swivel body and connected to each said encoder of each said second and third driving motors for supplying backup voltage to said encoders of said second and third drive motors for driving said movable robot components, other than said swivel body, mounted on said swivel body.