Which of the following is not a common component of an engine lathe?

• A. Headstock
• B. Cross slide
• C. Tool post
• D. Ram

Answer: (D)

Understanding which parts are standard on an engine lathe helps you spot the item that doesn’t belong. An engine lathe typically includes a headstock, which houses the spindle and drive gears; a carriage that moves the tool along the job, including the cross slide for transverse tool motion and the tool post that holds the cutting tool. These features support turning, facing, and threading on a rotating workpiece. A ram, by contrast, is not a typical component of an engine lathe. Rammers are associated with milling machines or turret setups where the tool is mounted on a movable ram to reach across a workpiece. So the ram does not belong as a common engine-lathe component.