Patent ID: 7188544

Claim:
An industrial delta robot having an arm system rotatable in space, comprising a base section, a moveable plate, several multi-jointed pull rods and a telescopic axle arranged between the base section and the moveable plate, opposite ends of the pull rods and the telescopic axle being respectively connected with the base section and the moveable plate, the telescopic axle comprising an inner axle and an outer tube arranged on the inner axle and displaceable in a longitudinal direction, and wherein a pair of end-to-end torsional rigid bushings are arranged in a stationary manner on the outer tube in which the inner axle is mounted to be displaceable, confronting inner ends of the bushings being slightly spaced apart to define an annular gap forming a transversely extending lubrication pocket for continuous lubrication of the inner axle during movement relative to the bushings.