A guide pillar, often referred to as a guide pin, is a critical component used primarily in die and mold assemblies. Its primary function is to ensure precise alignment between different parts of a die or mold during the manufacturing process. Guide pillars are used to guide the movement of one part of the assembly relative to another, ensuring accuracy and repeatability in the manufacturing process.
A guide bush, also known as a guide bushing or bush, complements the guide pillar. It serves as the mating component to the guide pillar, providing a precise and low-friction pathway for the guide pillar to travel through.