Clamping Force Calculator — Topworks Plastic Mold

CLAMP CALC · REV 2

Clamping Force & Machine Selection

Resin material — sets reference cavity pressure

Average cavity pressure (MPa)

20 MPa

PP reference range: 15–30 MPa · current value is within range

Projected area per cavity (cm²)

80 cm²

Include gate projection; exclude runner system

Safety factor

Standard pick · suits most production tools

Cavity layout

Number of cavities: cav

Calculation results live

Theoretical clamp

—

Design clamp force

—

kN (incl. safety factor)

Required tonnage

—

metric ton-force

Projected area per cavity—

Total projected area (× cavities)—

Avg. cavity pressure—

Theoretical clamping force—

× safety factor—

Design clamping force (final)—

Machine utilization — design force vs. recommended press

0% 25% 50% 70% 90% 100%

Press tonnage options