What is the diameter of the DW618 motor? Support September 27, 2022 15:06 Updated Follow Answer The diameter of the DW618 motor is 3-1/2". Related articles What is the diameter of the DWP611 motor? What cord sets are available for the DW616 and DW618 routers? Does the DW618B3 2 1/4 HP Three Base Router Kit include the DW6913 Edge Guide? What are the dimensions of the mounting holes on the DW735 planer? Can other bulbs work in the DEWALT flashlights and floodlights? Comments 0 comments Please sign in to leave a comment.