Generations
| Model | Size | Built around | Used market | Enclosed cab |
|---|---|---|---|---|
| Hitachi EX300LCH | 20-30 t | — | rare | — |
| Hitachi EX300H | 20-30 t | 1992 | rare | — |
| Hitachi EX300LC2 | 20-30 t | 1993 | common | 100% |
| Hitachi EX300H-2 | 20-30 t | 1993 | rare | — |
| Hitachi EX300-2 | 20-30 t | 1994 | rare | — |
| Hitachi EX300-3 | 20-30 t | 1995 | rare | — |
| Hitachi EX300LC3 | 20-30 t | 1995 | known | 100% |
| Hitachi EX300-3LC | 20-30 t | 1996 | common | 100% |
| Hitachi EX300LC | 20-30 t | 1996 | known | 100% |
| Hitachi EX300 | 20-30 t | 1996 | known | — |
| Hitachi EX300LC3L | 20-30 t | 1996 | rare | — |
| Hitachi EX300LL | 20-30 t | 1996 | rare | — |
| Hitachi EX300LC3C | 20-30 t | 1997 | known | 100% |
| Hitachi EX300-3C | 20-30 t | 1998 | rare | — |
| Hitachi EX300LC5 | 20-30 t | 1999 | rare | — |
| Hitachi EX300-5 | 20-30 t | 1999 | rare | — |