Magnetic drill is a kind of electric tool for adhering and drilling on the horizontal level, side face and top face and widely used in the building, bridge building and ship building industries. You can use the magnetic drill when you cannot use drill press and electric hand drill to drill huge steel work pieces or in field operation. These machines are convenient, small and able to improve the machining accuracy efficiency. It has velocity-adjustable characteristic of constant power, over-loading protection and infinitely viable speed transmission.