Specifications - National 4 (ID: 76391)
| Type | Forging upsetter |
| Manufacturer | National |
| Model | 4 |
| Force | 800 ton |
| Dia | 4 « |
| Grip Open | 6″ |
| Stroke | 13.5″ |
| SPM | 25 |
| Grip Tons | 400 |
| Gather | 6.2″ |
| Hold | 3″ |
| Die Space Length | 21.5″ |
| Die Space Height | 26″ |
| Thickness of Each Die | 8.1″ |






