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To analyze the working equipment of a rotary bucket excavatDr, it is necessary to determine the components of the total resultant of horizontally and verticaliy directed forces induced in ~ae roar by digging. The components are determined by the value and direction of the resultant. The resulting direction of the resultant depends in turn on the spatial orientation of the rotor and the direction of rotation of the arm In plan during working of the face.A previous communication [1] showed that when the rotor is Inclined in the horizontal or vertical plane (or both), its spatial orientation changes with the slope of the arm and may be expressed by two equations: f cos'..

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