A component mounting machine comprising: a substrate holding device configured to hold a substrate (S); a component supply device configured to supply a component; a mounting head configured to pick up and hold the component supplied from the component supply device and mount the component on the substrate (S) held by the substrate holding device ; and a moving device configured to move the mounting head , the moving device including a unidirectional moving device configured to move the mounting head in a first direction using a linear motor , wherein the unidirectional moving device is provided with a base , a pair of guide rails arranged on the base extending parallel in the first direction, a slide configured to hold the mounting head , the slide being guided by the pair of guide rails and movable in the first direction, a stator that configures the linear motor , the stator being held on the base with multiple magnets that are lined up in the first direction, a movable element that configures the linear motor , the movable element including a coil and being arranged on the slide between the pair of guide rails , characterized by a bracket fixed to the movable element and configured to hold a portion of wires (C) that are used to supply power to the linear motor , wherein the unidirectional moving device is configured such that the base , which has a substantially frame shape, is arranged on an upper section of the component mounting machine , the slide is configured such that the movable element is fixed to an upper section of the slide , and the bracket is fixed to the movable element in a manner protruding from the base upwards from between the pair of guide rails . a substrate holding device configured to hold a substrate (S); a component supply device configured to supply a component; a mounting head configured to pick up and hold the component supplied from the component supply device and mount the component on the substrate (S) held by the substrate holding device ; and a moving device configured to move the mounting head , the moving device including a unidirectional moving device configured to move the mounting head in a first direction using a linear motor , wherein the unidirectional moving device is provided with a base , a pair of guide rails arranged on the base extending parallel in the first direction, a slide configured to hold the mounting head , the slide being guided by the pair of guide rails and movable in the first direction, a stator that configures the linear motor , the stator being held on the base with multiple magnets that are lined up in the first direction, a movable element that configures the linear motor , the movable element including a coil and being arranged on the slide between the pair of guide rails , characterized by a bracket fixed to the movable element and configured to hold a portion of wires (C) that are used to supply power to the linear motor , wherein the unidirectional moving device is configured such that the base , which has a substantially frame shape, is arranged on an upper section of the component mounting machine , the slide is configured such that the movable element is fixed to an upper section of the slide , and the bracket is fixed to the movable element in a manner protruding from the base upwards from between the pair of guide rails . <EOS>