Abstract: Disclosed is a rotary impact tool comprising a case enclosing a drive motor, a hammer member with an inner working surface provided with projections, an intermediate member transmitting rotation from the motor to the hammer member and including a guide made eccentric relative to the axis of rotation and intended to transmit rotation from the drive motor to the hammer member as well as to provide translation of the hammer member in a plane perpendicular to the axis of rotation, a spindle disposed coaxially with the intermediate member, embraced by the inner working surface of the hammer member, and having on its outer surface projections corresponding to the projections made on the inner working surface of the hammer member to transmit impulse rotation to the spindle.