STANDARD EXPANDABLE CAVITY SYSTEMS Technical Information Expandable Cavities simplify tooling design to effectively mold undercuts such as threads, dimples, and protrusions on parts such as snap O-ring caps, plumbing supplies, industrial flanges and valves, electrical fixtures, and much more. The patented Expandable Cavity design eliminates the engineering, maintenance, and machining required for slide action mechanisms which results in smaller molds or higher mold cavitation.
X Min. Ejector Stroke
Mold Closed
Mold Open
Technical Information: • Available in four standard sizes to satisfy a wide range of applications. • The Expandable Cavity expands along a conical shape; 10° per side. • Manufactured from A-2 tool steel (54-57 HRC) for repeatable expansion. For optimal performance, the Expandable Cavity should ride against a hardened insert. • Expandable Cavities are capable of operating without lubrication. However, treating the Expandable Cavity with an additional coating for wear reduction or corrosion resistance is beneficial. • Expandable Cavities can be ordered with molding detail for a ‘mold ready’ component.
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