Guhuza inshinge za roller cyangwa zidafite impeta y'imbere ni ibice byuzuye bigizwe nigikombe cyo hanze cyashushanijwe, hamwe nimpeta yo hanze ifite sereferi yo hanze, uruziga rwa urushinge hamwe nuruzitiro rwimbere hamwe nimpeta yimbere ikurwaho. Guhuza urushinge rwinshinge zifite impeta yumuhanda hamwe nu mugongo. hanze yubuso hamwe nimpeta ifatika.Nkigisubizo, barashobora kwishyura indinganizo idahuza ya axe igera kuri 3 °.
Guhuza inshinge za roller: PNA, RPNA | Kugenwa | Ibipimo (mm) | Ibipimo fatizo byumutwaro |
| Fw | D | C ± 0.5 | D1 | r min. | dyn.Cr KN | stat.Cor KN |
| RPNA 15/28 | 15 | 28 | 12 | 24.5 | 0.8 | 6.9 | 7.9 |
| RPNA 18/32 | 18 | 32 | 16 | 27 | 1.8 | 12.5 | 16.2 |
| RPNA 20/35 | 20 | 35 | 16 | 30.5 | 2.8 | 13 | 17.5 |
| RPNA 25/42 | 25 | 42 | 20 | 36.5 | 3.8 | 18.8 | 30.5 |
| RPNA 28/44 | 28 | 44 | 20 | 38.5 | 4.8 | 22 | 34 |
| RPNA 30/47 | 30 | 47 | 20 | 42 | 5.8 | 22.6 | 36 |
| RPNA 35/52 | 35 | 52 | 20 | 47.5 | 6.8 | 24.3 | 41.5 |
| RPNA 40/55 | 40 | 55 | 20 | 50.5 | 7.8 | 26 | 47 |
| RPNA 45/62 | 45 | 62 | 20 | 58 | 8.8 | 27.5 | 53 |
| Kugenwa | Ibipimo (mm) | Ibipimo fatizo byumutwaro |
| d | F | D | C ± 0.5 | B | D1 | r min. | r1 min. | s min. | dyn.Cr KN | stat.Cor KN |
| PNA 12/28 | 12 | 15 | 28 | 12 | 12 | 24.5 | 0.8 | 0.3 | 0.5 | 6.9 | 7.9 |
| PNA 15/32 | 15 | 18 | 32 | 16 | 16 | 27 | 0.8 | 0.3 | 0.5 | 12.5 | 16.2 |
| PNA 17/35 | 17 | 20 | 35 | 16 | 16 | 30.5 | 0.8 | 0.3 | 0.5 | 13 | 17.5 |
| PNA 20/42 | 20 | 25 | 42 | 20 | 20 | 36.5 | 0.8 | 0.3 | 0.5 | 18.8 | 30.5 |
| PNA 22/44 | 22 | 28 | 44 | 20 | 20 | 38.5 | 0.8 | 0.3 | 0.5 | 22 | 34 |
| PNA 25/47 | 25 | 30 | 47 | 20 | 20 | 42 | 0.8 | 0.3 | 0.5 | 22.6 | 36 |
| PNA 30/52 | 30 | 35 | 52 | 20 | 20 | 47.5 | 0.8 | 0.3 | 0.5 | 24.3 | 41.5 |
| PNA 35/55 | 35 | 40 | 55 | 20 | 20 | 50.5 | 0.8 | 0.3 | 0.5 | 26 | 47 |
| PNA 40/62 | 40 | 45 | 62 | 20 | 20 | 58 | 0.8 | 0.3 | 0.5 | 27.5 | 53 |
