The Model 816 PIPEMASTER® is a portable ID mount machine tool for beveling, facing and/or counter-boring 8” (219mm) through 16” (406.4mm) pipe. The tool is configured with dual hydraulic motor drives, that power helical gears attached to the main spindle. A set of two hydraulic cylinders (with rapid and slow feed control) advance the cutting head into the pipe end. A 4” diameter mandrel shaft is provided for optimum stability during heavy cutting operations. One hydraulically actuated mandrel head assembly with mounting pads covers the whole range of the tool.