Generations
| Model | Size | Built around | Used market | Enclosed cab |
|---|---|---|---|---|
| Komatsu PC202 | 0-6 t | 1981 | rare | — |
| Komatsu PC20-5 | 0-6 t | 1988 | rare | — |
| Komatsu PC20-6 | 0-6 t | 1989 | rare | — |
| Komatsu PC20 | 0-6 t | 1989 | known | 86% |
| Komatsu PC20MR | 0-6 t | 1992 | rare | — |
| Komatsu PC20-7 | 0-6 t | 1992 | known | 96% |
| Komatsu PC20R-8 | 0-6 t | 1996 | rare | — |
| Komatsu PC20MR-1 | 0-6 t | 1999 | rare | — |
| Komatsu PC20MRX | 0-6 t | 2004 | rare | — |
| Komatsu PC20MR-2 | 0-6 t | 2006 | rare | — |
| Komatsu PC20R | 0-6 t | 2008 | rare | — |