A dust extractor device of a router has rotatable dust trap part able to be connected with a foot plate of the router and arranged to the side of the routing tool underneath the foot plate, such dust trap part being open toward the routing tool. The foot plate has an access opening for the routing tool. The dust trap part is constituted by an extractor hood with a hood casing at least essentially centered on the axis of rotation and a hood floor. The hood casing and the hood floor extend in the peripheral direction through an angle equal to or less than 180.degree.. The extractor hood is open at its top side and opens into the access opening. The top end region of the extractor hood is rotatably supported on a holder, which is detachably secured to the foot plate and in the position of use extends around the access opening. The top side of the access opening is provided with a covering means, which is detachably attached to the foot plate and covers the access opening, such covering means having in it an access opening for the routing tool. The connection means is, in the position of use, in open connection with the access opening.