The feedrod is a rotating shaft that transmits power from the headstock to the carriage to enable automatic feed movement during turning operations. It runs parallel to the lead screw along the length of the lathe bed and is typically used to drive the carriage for general cutting tasks that do not involve threading.
Through a system of gears and clutches inside the apron, the feedrod transfers rotary motion to linear motion, allowing the carriage or cross-slide to move smoothly at controlled rates. Unlike the lead screw, which is reserved for threading due to its precise threading geometry, the feedrod is designed for durability and continuous use in standard feeding operations. Its purpose is to simplify and automate tool movement, improve surface finish, and ensure consistent material removal during machining.
