Pipe machining apparatuses and methods of operating are provided. In one aspect, a pipe machining apparatus includes an advancement mechanism coupled to a frame and adapted to move relative to the frame between a first position, in which the advancement mechanism is in a travel path of an advancement member and is adapted to be engaged by the advancement member to advance a tool, and a second position, in which the advancement mechanism is positioned out of the travel path of the advancement member and is not adapted to be engaged by the advancement member. In another aspect, a pipe machining apparatus includes multiple motors and pinion gears engaged with a gear rack of a tool carrier. In a further aspect, a pipe machining apparatus includes a race wiper. In yet another aspect, a pipe machining apparatus includes a race lubrication member.