Abstract:
An industrial robot (1) comprising a first robot part (3) and a second robot part (6) arranged to be moved in relation to each other, and a balancing device (8), arranged there between, wherein the balancing device (8) is arranged to counteract the gravitational force upon relative movement of the robot parts (3, 6). Said balancing device comprising a mechanical spring means (10) and a spring housing (15) arranged enclosing the spring means. The spring housing (15) comprises at least one air inlet (23) adapted for pressurized air supply.
Abstract:
The invention describes asealing system comprising a rotary sealing surface (3) on a rotary shaft (1) and a rotary shaft lip seal (5), of which the rotary sealing surface has a surface coating layer (9) of a solid lubricant substance. The invention further comprises an industrial robot having several axes of rotation, comprising a manipulator with drive units for rotating robot parts according to the axes of rotation of the robot, and at least one of said drive units having a rotary shaft (1) provided with sucha sealing system. In addition, the invention comprises a method for providing a rotary sealing surface (3) on a rotary shaft (1), comprising coating the intended sealing surface of the rotary shaft with a surface coating layer (9) of a solid lubricant substance.