Generations
| Model | Size | Built around | Used market | Enclosed cab |
|---|---|---|---|---|
| Hitachi EX400LD-3 | 30-45 t | 1989 | rare | — |
| Hitachi EX400 | 30-45 t | 1990 | rare | — |
| Hitachi EX400LC | 30-45 t | 1992 | common | 100% |
| Hitachi EX400H | 30-45 t | 1993 | rare | — |
| Hitachi EX400-3 | 30-45 t | 1994 | rare | — |
| Hitachi EX400H-3 | 30-45 t | 1995 | rare | — |
| Hitachi EX400LC3 | 30-45 t | 1995 | common | 100% |
| Hitachi EX400LC3C | 30-45 t | 1996 | rare | — |
| Hitachi EX400LC5 | 30-45 t | 1997 | rare | — |
| Hitachi EX400-5 | 30-45 t | 1998 | rare | — |