Heavy duty needle roller bearing is a kind of high capacity bearing with small sectional Height. It can operate very flexibly even with the light alloy bearing seat due to its high Hard outer ring.
With retaining edge: NKI NKIS NA48 NA49 series
Without inner ring: NK NKS RNA49 RNA69 RNAO series
Please check the table for bearing detail dimensions.
NK, NKS, RNA49, RNA69series Heavy Duty Needle Roller Bearings Without Inner Ring |
Shaft Diameter | Bearing Designation | Mass Approx | Boundary Dimensions | Basic Load Rating | Limiting Speed |
mm | Current | Original Code | g | Fw(mm) | D(mm) | C(mm) | CrDynamic(N) | Cor Static(N) | Oil(rpm) |
8 | NK8/10 | | 8.0 | 8 | 15 | 10 | | | |
10 | NK10/12 TN | 4624097K | 10 | 10 | 17 | 12 | 4750 | 5350 | 23500 |
| 5624097 | 16.6 | 10 | 17 | 15 | 4860 | 7100 | 23500 |
12 | NK12/12 | 644097 | 11.8 | 12 | 19 | 12 | 6050 | 6400 | 21640 |
| 5624098 | 15.4 | 12 | 19 | 15 | 6400 | 7100 | 21640 |
NK12/16 | | 16.8 | 12 | 19 | 16 | 8200 | 9800 | 21640 |
14 | NKS14 | | 27 | 14 | 25 | 16 | 10400 | 10800 | 17652 |
RNA4900 | 4624900 | 24.4 | 14 | 22 | 13 | 8060 | 9000 | 18322 |
RNA6900 | 6634900 | 29.1 | 14 | 22 | 22 | 8281 | 11612 | 18322 |
15 | NK15/12 | 644800K | 18.5 | 15 | 23 | 12 | 8600 | 10070 | 21004 |
| 7948/15 | 16.1 | 15 | 22 | 12 | 8200 | 9800 | 8412 |
| 644302 | 18.2 | 15 | 25 | 12 | 10600 | 13500 | 17144 |
16 | NK16/16 | | 20.8 | 16 | 24 | 16 | 9030 | 11900 | 15522 |
NK16/20 | 624701 | 23.9 | 16 | 24 | 20 | 10400 | 16800 | 15522 |
RNA4901 | 4624901 | 16.6 | 16 | 24 | 13 | 6400 | 8900 | 15522 |
RNA6901 | 6634901 | 28.7 | 16 | 24 | 22 | 14000 | 18600 | 15522 |
NKS16 | | 30 | 16 | 28 | 16 | 14900 | 15000 | 20000 |
17 | NK17/16 | 644903K | 21.5 | 17 | 25 | 16 | 9000 | 13500 | 14163 |
18 | NK18/20 | | 30.5 | 18 | 26 | 20 | 10500 | 13800 | 13628 |
20 | NK20/16 | 644802 | 25.7 | 20 | 28 | 16 | 11500 | 13400 | 12716 |
NK20/20 | 624802 | 29.3 | 20 | 28 | 20 | 12400 | 21800 | 12716 |
RNA4902 | 4624902 | 20.5 | 20 | 28 | 13 | 10800 | 12800 | 12716 |
RNA6902 | 6634902 | 35.4 | 20 | 28 | 23 | 13000 | 25000 | 12716 |
22 | RNA6903 | 6634903 | 39.8 | 22 | 30 | 23 | 14000 | 19900 | 16300 |