Injection Molding Calculator

Calculate clamp force and injection pressure for hydraulic injection molding machines

Input Parameters

Results

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Clamp Force Required
tons
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Injection Pressure
psi
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Clamp Cylinder Pressure
psi
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Shot Volume
cu in

Reference

Clamp force = Projected area × cavities × cavity pressure / 2 Cavity pressure: PE 3000, PP 4000, ABS 5000, Nylon 6000, PC 7000 psi Thin walls (<0.06") increase pressure 30% Safety factor: 1.1× on clamp force