Needle roller bearings are bearings with cylindrical rollers with a diameter smaller than the length. Improved roller/raceway shape prevents stress peaks and extends the service life of bearings.
Provide needle roller bearings in different designs, series, and sizes to meet various working conditions and applications.
| Model | Fully loaded needle hole diameter | Outside diameter | width | Basic rated dynamic load | Limiting Speeds |
|---|---|---|---|---|---|
| [mm] | [mm] | [mm] | (kN) | 【r/min】 | |
| RNA 4860 | 330 | 380 | 80 | 594 | 1800 |
| RNA 4872 | 390 | 440 | 80 | 627 | 2040 |
| RPNA 15/28 | 15 | 28 | 12 | 7.37 | 9.15 |
| RPNA 18/32 | 18 | 32 | 16 | 12.8 | 17.6 |
| RPNA 20/35 | 20 | 35 | 16 | 13.2 | 19.3 |
| RPNA 25/42 | 25 | 42 | 20 | 19 | 32.5 |
| RPNA 30/47 | 30 | 47 | 20 | 22.9 | 38 |
| RPNA 35/52 | 35 | 52 | 20 | 24.6 | 45 |
| RPNA 40/55 | 40 | 55 | 20 | 26.4 | 51 |
| RPNA 45/62 | 45 | 62 | 20 | 27.5 | 57 |
| NKIA 5901 | 12 | 24 | 16 | —— | 8.09 |
| NKIB 5901 | 12 | 24 | 17.5 | 16 | 8.09 |
| NKIA 5902 | 15 | 28 | 18 | —— | 11.2 |
| NKIB 5902 | 15 | 28 | 20 | 18 | 11.2 |
| NKIA 5903 | 17 | 30 | 18 | —— | 11.4 |
| NKIB 5903 | 17 | 30 | 20 | 18 | 11.4 |
| NKIA 5904 | 20 | 37 | 23 | —— | 21.6 |
| NKIB 5904 | 20 | 37 | 25 | 23 | 21.6 |
| NKIA 59/22 | 22 | 39 | 23 | —— | 23.3 |
| NKIB 59/22 | 22 | 39 | 25 | 23 | 23.3 |
| NKIA 5905 | 25 | 42 | 23 | —— | 24.2 |
| NKIB 5905 | 25 | 42 | 25 | 23 | 24.2 |
| NKIA 5906 | 30 | 47 | 23 | —— | 25.5 |
| NKIB 5906 | 30 | 47 | 25 | 23 | 25.5 |
| NKIA 5907 | 35 | 55 | 27 | —— | 31.9 |
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