A component mounter comprising: a component transfer device configured to detachably hold a nozzle tool to which a suction nozzle is attached, move the nozzle tool, and transfer an electronic component held by the suction nozzle to a mounting position on a circuit board; a tool station configured to store an exchange-use nozzle tool; wherein the configuration of the component mounter is such that the nozzle tool can be exchanged automatically based on the type of the electronic component to be mounted for the exchange-use nozzle tool and a control device configured to control operation of the component transfer device and perform mounting processing of the electronic component and exchange processing of the nozzle tool, wherein the component transfer device is provided with a head main body, and a tool holding device configured to hold the nozzle tool and provided to be raisable and lowerable with respect to the head main body and rotatable around a rotation axis line, characterized in that the tool station is configured to be able to store the exchange-use nozzle tool at multiple different storage angles (An1, An2), and the control device is provided with an angle acquiring section configured to acquire the storage angle (An1, An2) of the exchange-use nozzle tool in the tool station, and an exchange control section configured to, during the exchange processing of the nozzle tool for the exchange-use nozzle tool, raise and lower the tool holding device such that the exchange-use nozzle tool stored in the tool station is held by the tool holding device, rotate the tool holding device based on the storage angle (An1, An2) of the exchange-use nozzle tool, and perform angle alignment of the nozzle tool with respect to the head main body. a component transfer device configured to detachably hold a nozzle tool to which a suction nozzle is attached, move the nozzle tool, and transfer an electronic component held by the suction nozzle to a mounting position on a circuit board; a tool station configured to store an exchange-use nozzle tool; wherein the configuration of the component mounter is such that the nozzle tool can be exchanged automatically based on the type of the electronic component to be mounted for the exchange-use nozzle tool and a control device configured to control operation of the component transfer device and perform mounting processing of the electronic component and exchange processing of the nozzle tool, wherein the component transfer device is provided with a head main body, and a tool holding device configured to hold the nozzle tool and provided to be raisable and lowerable with respect to the head main body and rotatable around a rotation axis line, characterized in that the tool station is configured to be able to store the exchange-use nozzle tool at multiple different storage angles (An1, An2), and the control device is provided with an angle acquiring section configured to acquire the storage angle (An1, An2) of the exchange-use nozzle tool in the tool station, and an exchange control section configured to, during the exchange processing of the nozzle tool for the exchange-use nozzle tool, raise and lower the tool holding device such that the exchange-use nozzle tool stored in the tool station is held by the tool holding device, rotate the tool holding device based on the storage angle (An1, An2) of the exchange-use nozzle tool, and perform angle alignment of the nozzle tool with respect to the head main body.