Guides or shoes that ensure the proper parallelism, squareness, and sliding fit between pressA machine tool with a stationary bed and a slide or ram that has reciprocating motion at right angles to the bed surface; the ram is guided in the frame of the machine. components such as the ramThe main reciprocating member of a press, guided in the press frame, to which the punch or upper die is fastened. and the frameThe main structure of a press.. They are usually adjustable to compensate for wear and to establish operating clearance.