Swing Pin is the rugged steel rod that locks the swing gearbox to the machine’s turntable, allowing the upper structure to rotate smoothly. We insert it through matching holes in the swing bearing and gearbox housing, then secure it with nuts or clips so the cab can spin without wobble. Made from tough steel, it handles back-and-forth forces and keeps dirt out. If it starts to loosen or wear, we tighten or replace it fast. Keeps us turning without surprises.