| Engine name | manufacturer | configuration | cylinders |
|---|---|---|---|
| Ha-9-II | Kawasaki | V | 12 |
| Hatsukaze 11 | Hitachi | Inline | 4 |
| Hercules 100 | Bristol | Radial | 14 |
| Hercules 101 | Bristol | Radial | 14 |
| Hercules 105 | Bristol | Radial | 14 |
| Hercules 106 | Bristol | Radial | 14 |
| Hercules 110 | Bristol | Radial | 14 |
| Hercules 120 | Bristol | Radial | 14 |
| Hercules 130 | Bristol | Radial | 14 |
| Hercules 134 | Bristol | Radial | 14 |
| Hercules 200 | Bristol | Radial | 14 |
| Hercules 216 | Bristol | Radial | 14 |
| Hercules 230 | Bristol | Radial | 14 |
| Hercules 232 | Bristol | Radial | 14 |
| Hercules 234 | Bristol | Radial | 14 |