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】 | |
| NKS 20 | 20 | 32 | 20 | 23.3 | 27 |
| RNA 4902 | 20 | 28 | 13 | 11.2 | 15.3 |
| RNA 4902 RS | 20 | 28 | 13 | 9.13 | 12 |
| RNA 4902.2RS | 20 | 28 | 13 | 9.13 | 12 |
| RNA 6902 | 20 | 28 | 23 | 17.2 | 27 |
| RNAO 20X28X26 | 20 | 28 | 26 | 16.1 | 29 |
| NK 21/16 | 21 | 29 | 16 | 13.8 | 20.4 |
| NK 21/20 | 21 | 29 | 20 | 17.2 | 27 |
| NK 22/16 | 22 | 30 | 16 | 14.2 | 21.6 |
| NK 22/20 | 22 | 30 | 20 | 17.9 | 29 |
| RNA 4903 | 22 | 30 | 13 | 11.4 | 16.3 |
| RNA 4903 RS | 22 | 30 | 13 | 9.52 | 12.9 |
| RNA 4903.2RS | 22 | 30 | 13 | 9.52 | 12.9 |
| RNA 6903 | 22 | 30 | 23 | 18.7 | 30.5 |
| RNAO 22X35X16 | 22 | 35 | 16 | 19.4 | 25.5 |
| NK 24/16 | 24 | 32 | 16 | 15.4 | 24.5 |
| NK 24/20 | 24 | 32 | 20 | 19 | 32.5 |
| NKS 24 | 24 | 37 | 20 | 26 | 33.5 |
| NK 25/16 | 25 | 33 | 16 | 15.1 | 24.5 |
| NK 25/20 | 25 | 33 | 20 | 19 | 32.5 |
| NKS 25 | 25 | 38 | 20 | 27.5 | 36 |
| RNA 4904 | 25 | 37 | 17 | 25 | 28.5 |
| RNA 4904 RS | 25 | 37 | 17 | 22 | 22.4 |
| RNA 4904.2RS | 25 | 37 | 17 | 22 | 22.4 |
| RNA 6904 | 25 | 37 | 30 | 40.5 | 53 |
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