Choosing the right injection molding machine
| Parameter | How to Calculate |
|---|---|
| Clamp Tonnage | Projected area x material pressure factor (2-5 ton/sq in) |
| Shot Size | Part weight + runner weight (should be 30-70% of machine shot capacity) |
| Screw Diameter | Smaller for engineering plastics, larger for high-output commodity |
Hydraulic: lower cost, higher maintenance. Electric: precise, energy efficient, clean. Hybrid: combines both advantages.