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OwnerShanghua Li, Arne Broberg +2inventors
InventorsShanghua Li, Arne Broberg, Erik Johansson, Ake Oberg
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A sealing system including a rotary sealing surface on a rotary shaft and a rotary shaft lip seal, of which the rotary sealing surface has a surface coating layer of a solid lubricant substance. The invention further includes an industrial robot having several axes of rotation, including a manipulator with drive units for rotating robot parts according to the axes of rotation of the robot, and at least one of the drive units having a rotary shaft provided with such a sealing system. In addition, the invention includes a method for providing a rotary sealing surface on a rotary shaft, including coating the intended sealing surface of the rotary shaft with a surface coating layer of a solid lubricant substance.
A sealing system comprising a rotary sealing surface on a rotary shaft and a rotary shaft lip seal, characterized in that the rotary sealing surface has a surface coating layer of a solid lubricant substance.
A method for providing a rotary sealing surface on a rotary shaft, characterized in that it comprises providing an intended rotary sealing surface on a rotary shaft, providing a pattern of grooves on said intended rotary sealing surface, which grooves are adapted for retention of an oil or grease lubricant, and coating the intended rotary sealing surface of the rotary shaft with a surface coating layer of a solid lubricant substance, such that an interior of said grooves is also coated with said surface coating layer while maintaining their oil or grease lubricant retaining function.
Dependencies are inferred from the claim text.