Portable apparatus for machining pipe ends

Portable apparatus for machining pipe ends, comprising a base plate, a housing which is connected to the base plate, a drive arrangement, a gearing arrangement for driving a cutting tool and a feed arrangement for feeding the cutting tool in the direction of a pipe end to be machined, a clamping device for clamping a pipe to be machined, a coupling arrangement for coupling the apparatus to a drive source, and a feed control device for controlling the feed of the cutting tool, wherein a moveable clamping lever is arranged in the clamping device and is movable from a first unclamped position into a second clamped position, the clamping lever having an eccentric contour, wherein the clamping device is composed of a one-piece annular retaining ring which is arranged so as to be firmly connected to the housing, a curved and movable retaining element is arranged inside the retaining ring, the retaining element is movable by the clamping lever with respect to the retaining ring in the circular space enclosed by the retaining ring.