Plastic & Injection Molding

Forces and Calculations are Key to Sizing Core Pull Hydraulic Cylinders

Hydraulic cylinders are commonly used on injection molds to actuate movable core. When considering  “How to Size” a hydraulic cylinder for moving the core or preloading the core, PFA recommends to review three positions – initial breakaway, movement during stroke, and end position.  After determining the limiting condition, a proper size may be determined.  PFA’s […]

Hydraulic Locking Cylinders, Plastic & Injection Molding

Why is Core Preload Important for Injection Molds?

Although most manufacturers do not think about it, core preload is an important part of any successful injection molding project that requires not only precision but uniformity. As the creator of KOR-LOK® Side Action Systems, PFA understands not only core forces under injection but also how preload is necessary to overcome those forces and the importance of choosing […]

Plastic & Injection Molding
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