Generations
| Model | Size | Built around | Used market | Enclosed cab |
|---|---|---|---|---|
| Komatsu PC45MR | 0-6 t | 1992 | rare | — |
| Komatsu PC45-1 | 0-6 t | 1993 | rare | — |
| Komatsu PC451E | 0-6 t | 1997 | rare | — |
| Komatsu PC45 | 0-6 t | 1999 | known | — |
| Komatsu PC45R-8 | 0-6 t | 2000 | known | 92% |
| Komatsu PC45R | 0-6 t | 2000 | rare | — |
| Komatsu PC45-8 | 0-6 t | 2000 | rare | — |
| Komatsu PC45MRX-1 | 0-6 t | 2002 | rare | — |
| Komatsu PC45MR-1 | 0-6 t | 2003 | known | — |