Generations
| Model | Size | Built around | Used market | Enclosed cab |
|---|---|---|---|---|
| Komatsu PC400-3 | 30-45 t | 1988 | rare | — |
| Komatsu PC400LC3 | 30-45 t | 1989 | common | 96% |
| Komatsu PC400 | 30-45 t | 1989 | known | 92% |
| Komatsu PC400LC1 | 30-45 t | 1989 | rare | — |
| Komatsu PC400-5 | 30-45 t | 1993 | rare | — |
| Komatsu PC400LC5L | 30-45 t | 1993 | known | — |
| Komatsu PC400HD-5 | 30-45 t | 1994 | rare | — |
| Komatsu PC400LC5 | 30-45 t | 1994 | known | 97% |
| Komatsu PC400-5LC | 30-45 t | 1994 | common | 94% |
| Komatsu PC400LC | 30-45 t | 1996 | known | 99% |
| Komatsu PC400HD6LC | 45-70 t | 1996 | rare | — |
| Komatsu PC400LC6LKAVANCE | 30-45 t | 1997 | rare | — |
| Komatsu PC400LC6 | 30-45 t | 1998 | common | 99% |
| Komatsu PC400HD-6 | 30-45 t | 1998 | rare | — |
| Komatsu PC400HD | 45-70 t | 1999 | rare | — |
| Komatsu PC400LC6LK | 30-45 t | 1999 | common | 100% |
| Komatsu PC400HD-6LK | 45-70 t | 2000 | rare | — |
| Komatsu PC400LC5LC | 30-45 t | 2002 | known | 99% |
| Komatsu PC400LC6LM | 30-45 t | 2002 | known | 100% |
| Komatsu PC400LC6M | 30-45 t | 2003 | rare | — |
| Komatsu PC400LC7L | 30-45 t | 2004 | known | 100% |
| Komatsu PC400LC6AVANCE | 30-45 t | 2004 | rare | — |
| Komatsu PC400LC7 | 30-45 t | 2005 | known | 98% |
| Komatsu PC400LC7LGALEO | 30-45 t | 2005 | rare | — |
| Komatsu PC400LC7E0 | 30-45 t | 2006 | known | — |