| Modello | Peso operativo |
|---|---|
| NK800 | 60100 kg - 132497.8 libbre |
| NK550VR | 41600 kg - 91712.3 libbre |
| NK500E-V | 39400 kg - 86862.1 libbre |
| NK400E-III | 35800 kg - 78925.5 libbre |
| NK300E-V | 28800 kg - 63493.1 libbre |
| NK250E-V | 24600 kg - 54233.7 libbre |
| NK200E-V | 22200 kg - 48942.6 libbre |
| NK1600 | 84000 kg - 185188.3 libbre |
| NK1200 | 71800 kg - 158291.9 libbre |
| CR250 | 24000 kg - 52910.9 libbre |
| CR100 | 12900 kg - 28439.6 libbre |