Insane Factories on Instagram: "Keyway machining is an essential process in creating transmission shafts, ensuring precise torque transmission between the shaft and its mating component, such as a gear, pulley, or coupling. The keyway is a slot cut into the shaft, designed to fit a machine key, which prevents relative rotation between connected parts. The machining process typically involves a slotting machine, broaching, or CNC milling, depending on the required accuracy and production volume.