Abstract: An industrial robot for use with an object may include a hand on which the object is mounted; an arm having a distal end to which the hand is rotatably connected; a body part to which a base end of the arm is rotatably connected; and an installation member structured to install the body part on a floor surface. The body part may include an elevating body having an upper surface to which the base end of the arm is rotatably connected, a casing configured to hold the elevating body such that the elevating body is movable up and down and to accommodate at least a part of a lower end of the elevating body, and an elevating mechanism configured to move the elevating body up and down. The elevating mechanism may be accommodated in the casing so as to overlap the elevating body when viewed in an up-down direction.

Abstract: An industrial robot may include a plurality of hands structured to mount the transfer objects; an arm comprising a front end side and a base end side, the hands being rotatably joined with the front end side of the arm; and a main body portion to which the base end side of the arm is rotatably joined. The main body portion may include an elevating unit to which the base end side of the arm is rotatably joined on a top surface side thereof, a housing which holds the elevating unit to be raised/lowered and in which at least part of a bottom end of the elevating unit is housed, and an elevating mechanism structured to raise and lower the elevating unit. The elevating mechanism may be accommodated in the housing so as to align with the elevating unit when viewed from a top-bottom direction.

Abstract: An industrial robot may include a plurality of hands structured to mount the transfer objects; an arm comprising a front end side and a base end side, the hands being rotatably joined with the front end side of the arm; and a main body portion to which the base end side of the arm is rotatably joined. The main body portion may include an elevating unit to which the base end side of the arm is rotatably joined on a top surface side thereof, a housing which holds the elevating unit to be raised/lowered and in which at least part of a bottom end of the elevating unit is housed, and an elevating mechanism structured to raise and lower the elevating unit. The elevating mechanism may be accommodated in the housing so as to align with the elevating unit when viewed from a top-bottom direction.

Abstract: An industrial robot is provided with the first hand, the second hand, the arm and the main unit section. The base end portion of the first hand and the base end portion of the second hand are joined to the front end portion of the arm such that they overlap with each other in the top-bottom direction. The first hand and the second hand are independently rotatable with respect to the arm and also rotatable about the common center of rotation with respect to the arm in the view from the top-bottom direction. Also, the first hand and the second hand are formed being bent in the view from the top-bottom direction, and also formed to have line symmetry about a predetermined imaginary line passing through the center of rotation in the view from the top-bottom direction.

Abstract: An industrial robot is provided with the first hand, the second hand, the arm and the main unit section. The base end portion of the first hand and the base end portion of the second hand are joined to the front end portion of the arm such that they overlap with each other in the top-bottom direction. The first hand and the second hand are independently rotatable with respect to the arm and also rotatable about the common center of rotation with respect to the arm in the view from the top-bottom direction. Also, the first hand and the second hand are formed being bent in the view from the top-bottom direction, and also formed to have line symmetry about a predetermined imaginary line passing through the center of rotation in the view from the top-bottom direction.

Abstract: An oil dynamic pressure bearing device comprises a bearing, a shaft freely rotatably supported by the bearing in a non-contact manner, and a dynamic pressure bearing section defined by at least one dynamic pressure groove on at least one side of the shaft and the bearing for generating dynamic pressure by a lubricant fluid filled in a minute gap between the shaft and the bearing. Grinding scratches are formed on the dynamic pressure bearing section in a circumferential direction of the dynamic pressure bearing section. The dynamic pressure groove may be formed only on one side of either the shaft or the bearing at the dynamic pressure bearing section and the grinding scratches are formed only on the other side.

Abstract: An oil dynamic pressure bearing device comprises a bearing, a shaft freely rotatably supported by the bearing in a non-contact manner, and a dynamic pressure bearing section defined by at least one dynamic pressure groove on at least one side of the shaft and the bearing for generating dynamic pressure by a lubricant fluid filled in a minute gap between the shaft and the bearing. Grinding scratches are formed on the dynamic pressure bearing section in a circumferential direction of the dynamic pressure bearing section. The dynamic pressure groove may be formed only on one side of either the shaft or the bearing at the dynamic pressure bearing section and the grinding scratches are formed only on the other side.