Guide pillar

Guide pillars are essential components in plastic and metal molds, providing accurate alignment between the moving and fixed halves during mold operation. A guide pillar ensures that all cavities close precisely, preventing wear and damage to core parts. High-precision guide pillars reduce friction and extend the service life of molds by maintaining stability and smooth movement. In injection molds, each guide pillar works together with a guide bush to guarantee accurate positioning, even under high-speed or high-pressure conditions. The surface of a guide pillar is usually hardened and polished for durability and smooth sliding performance. Selecting a suitable guide pillar material—such as SKD11, SUJ2, or hardened steel—is critical for precision and longevity. Whether in plastic injection molds, die-casting molds, or stamping tools, a guide pillar plays a key role in ensuring dimensional accuracy, mold safety, and consistent production quality. Proper lubrication and maintenance of guide pillars further enhance mold reliability and performance.