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Combined needle roller bearings consist of a radial needle roller bearing combined with a thrust bearing. They can accommodate both radial and axial loads. They are particularly suitable for applications where other types of locating bearing arrangements occupy too much space, or where the axial loads are too heavy, the speeds are too high, or the lubricant is inadequate for arrangements with simple thrust washers. We supplies combined needle roller bearings in three basic designs:
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*Needle roller / angular contact ball bearings
*Needle roller / thrust ball bearings
*Needle roller / cylindrical roller thrust bearings
Relubrication intervals for the radial and thrust part of the bearing must be calculated separately. The shorter of the two intervals should be used. For additional information about lubrication, refer to Lubrication.
Designation | Principal dimensions | Basic load ratings | Speed ratings | |||||||
radial dynamic | radial static | axial dynamic | axial static | Reference speed | Limiting speed | |||||
d(mm) | D(mm) | B(mm) | C(mm) | C(KN) | C0(KN) | C(KN) | C0(KN) | (r/min) | (r/min) | |
NKIA 5901 | 12 | 24 | 16 | 8.09 | 9.65 | 2.07 | 1.92 | 22 000 | 26 000 | |
NKIB 5901 | 12 | 24 | 17.5 | 16 | 8.09 | 9.65 | 2.07 | 1.92 | 22 000 | 26 000 |
NKIA 5902 | 15 | 28 | 18 | 11.2 | 15.3 | 2.27 | 2.37 | 19 000 | 22 000 | |
NKIB 5902 | 15 | 28 | 20 | 18 | 11.2 | 15.3 | 2.27 | 2.37 | 19 000 | 22 000 |
NKIA 5903 | 17 | 30 | 18 | 11.4 | 16.3 | 2.24 | 2.74 | 18 000 | 20 000 | |
NKIB 5903 | 17 | 30 | 20 | 18 | 11.4 | 16.3 | 2.24 | 2.74 | 18 000 | 20 000 |
NKIA 5904 | 20 | 37 | 23 | 21.6 | 28 | 3.79 | 4.21 | 15 000 | 17 000 | |
NKIB 5904 | 20 | 37 | 25 | 23 | 21.6 | 28 | 3.79 | 4.21 | 15 000 | 17 000 |
NKIA 59/22 | 22 | 39 | 23 | 23.3 | 32 | 4.14 | 4.93 | 14 000 | 15 000 | |
NKIB 59/22 | 22 | 39 | 25 | 23 | 23.3 | 32 | 4.14 | 4.93 | 14 000 | 15 000 |
NKIA 5905 | 25 | 42 | 23 | 24.2 | 34.5 | 4.24 | 5.26 | 13 000 | 15 000 | |
NKIB 5905 | 25 | 42 | 25 | 23 | 24.2 | 34.5 | 4.24 | 5.26 | 13 000 | 15 000 |
NKIA 5906 | 30 | 47 | 23 | 25.5 | 39 | 4.54 | 6.32 | 11 000 | 13 000 | |
NKIB 5906 | 30 | 47 | 25 | 23 | 25.5 | 39 | 4.54 | 6.32 | 11 000 | 13 000 |
NKIA 5907 | 35 | 55 | 27 | 31.9 | 54 | 5.83 | 8.42 | 9 500 | 11 000 | |
NKIB 5907 | 35 | 55 | 30 | 27 | 31.9 | 54 | 5.83 | 8.42 | 9 500 | 11 000 |
NKIA 5908 | 40 | 62 | 30 | 42.9 | 71 | 7.17 | 10.9 | 8 000 | 9 500 | |
NKIB 5908 | 40 | 62 | 34 | 30 | 42.9 | 71 | 7.17 | 10.9 | 8 000 | 9 500 |
NKIA 5909 | 45 | 68 | 30 | 45.7 | 78 | 7.47 | 12 | 7 500 | 8 500 | |
NKIB 5909 | 45 | 68 | 34 | 30 | 45.7 | 78 | 7.47 | 12 | 7 500 | 8 500 |
NKIA 5910 | 50 | 72 | 30 | 47.3 | 85 | 7.74 | 13.7 | 7 000 | 8 000 | |
NKIB 5910 | 50 | 72 | 34 | 30 | 47.3 | 85 | 7.74 | 13.7 | 7 000 | 8 000 |
NKIA 5911 | 55 | 80 | 34 | 57.2 | 106 | 9.27 | 16.7 | 6 300 | 7 000 | |
NKIB 5911 | 55 | 80 | 38 | 34 | 57.2 | 106 | 9.27 | 16.7 | 6 300 | 7 000 |
NKIA 5912 | 60 | 85 | 34 | 60.5 | 114 | 9.58 | 18 | 6 000 | 6 700 | |
NKIB 5912 | 60 | 85 | 38 | 34 | 60.5 | 114 | 9.58 | 18 | 6 000 | 6 700 |
NKIA 5913 | 65 | 90 | 34 | 61.6 | 120 | 9.96 | 19.2 | 5 600 | 6 300 | |
NKIB 5913 | 65 | 90 | 38 | 34 | 61.6 | 120 | 9.96 | 19.2 | 5 600 | 6 300 |
NKIA 5914 | 70 | 100 | 40 | 84.2 | 163 | 13.2 | 25 | 5 000 | 5 600 | |
NKIB 5914 | 70 | 100 | 45 | 40 | 84.2 | 163 | 13.2 | 25 | 5 000 | 5 600 |
NX 7 TN | 7 | 14 | 18 | 2.81 | 2.75 | 3.45 | 5 | 10 000 | 11 000 | |
NX 7 ZTN | 7 | 14 | 18 | 2.81 | 2.75 | 3.45 | 5 | 10 000 | 6 000 | |
NKX 10 TN | 10 | 19 | 23 | 5.94 | 8 | 9.95 | 15.3 | 9 500 | 13 000 | |
NKX 10 ZTN | 10 | 19 | 23 | 5.94 | 8 | 9.95 | 15.3 | 9 500 | 8 000 | |
NX 10 | 10 | 19 | 18 | 4.95 | 4.55 | 5.07 | 8.5 | 8 500 | 9 500 | |
NX 10 Z | 10 | 19 | 18 | 4.95 | 4.55 | 5.07 | 8.5 | 8 500 | 5 600 | |
NKX 12 | 12 | 21 | 23 | 9.13 | 12 | 10.4 | 16.6 | 9 000 | 13 000 | |
NKX 12 Z | 12 | 21 | 23 | 9.13 | 12 | 10.4 | 16.6 | 9 000 | 7 500 | |
NX 12 | 12 | 21 | 18 | 5.39 | 5.2 | 5.27 | 9.65 | 8 000 | 9 000 | |
NX 12 Z | 12 | 21 | 18 | 5.39 | 5.2 | 5.27 | 9.65 | 8 000 | 5 300 | |
NKX 15 | 15 | 24 | 23 | 11 | 14 | 10.6 | 18.3 | 8 500 | 12 000 | |
NKX 15 Z | 15 | 24 | 23 | 11 | 14 | 10.6 | 18.3 | 8 500 | 7 000 | |
NKXR 15 | 15 | 24 | 23 | 11 | 14 | 11.2 | 27 | 4 300 | 8 500 | |
NKXR 15 Z | 15 | 24 | 23 | 11 | 14 | 11.2 | 27 | 4 300 | 8 500 | |
NX 15 | 15 | 24 | 28 | 11 | 14 | 6.18 | 12.2 | 7 500 | 8 500 | |
NX 15 Z | 15 | 24 | 28 | 11 | 14 | 6.18 | 12.2 | 7 500 | 5 300 | |
NKX 17 | 17 | 26 | 25 | 12.1 | 16.6 | 10.8 | 19.6 | 8 500 | 12 000 | |
NKX 17 Z | 17 | 26 | 25 | 12.1 | 16.6 | 10.8 | 19.6 | 8 500 | 7 000 | |
NKXR 17 | 17 | 26 | 25 | 12.1 | 16.6 | 12.2 | 31.5 | 4 300 | 8 500 | |
NKXR 17 Z | 17 | 26 | 25 | 12.1 | 16.6 | 12.2 | 31.5 | 4 300 | 8 500 | |
NX 17 | 17 | 26 | 28 | 12.1 | 16.6 | 6.37 | 13.4 | 7 000 | 8 500 | |
NX 17 Z | 17 | 26 | 28 | 12.1 | 16.6 | 6.37 | 13.4 | 7 000 | 5 000 | |
NKX 20 | 20 | 30 | 30 | 16.5 | 25.5 | 14.3 | 27 | 7 500 | 10 000 | |
NKX 20 Z | 20 | 30 | 30 | 16.5 | 25.5 | 14.3 | 27 | 7 500 | 6 000 | |
NKXR 20 | 20 | 30 | 30 | 16.5 | 25.5 | 18.6 | 48 | 3 800 | 7 500 | |
NKXR 20 Z | 20 | 30 | 30 | 16.5 | 25.5 | 18.6 | 48 | 3 800 | 7 500 | |
NX 20 | 20 | 30 | 28 | 13.2 | 19.3 | 7.8 | 17.3 | 6 300 | 7 500 | |
NX 20 Z | 20 | 30 | 28 | 13.2 | 19.3 | 7.8 | 17.3 | 6 300 | 4 500 | |
NKX 25 | 25 | 37 | 30 | 19 | 32.5 | 19.5 | 40.5 | 6 300 | 9 000 | |
NKX 25 Z | 25 | 37 | 30 | 19 | 32.5 | 19.5 | 40.5 | 6 300 | 5 500 | |
NKXR 25 | 25 | 37 | 30 | 19 | 32.5 | 25 | 69.5 | 3 200 | 6 300 | |
NKXR 25 Z | 25 | 37 | 30 | 19 | 32.5 | 25 | 69.5 | 3 200 | 6 300 | |
NX 25 | 25 | 37 | 30 | 15.1 | 24.5 | 12.4 | 28.5 | 5 600 | 6 300 | |
NX 25 Z | 25 | 37 | 30 | 15.1 | 24.5 | 12.4 | 28.5 | 5 600 | 3 800 | |
NKX 30 | 30 | 42 | 30 | 22.9 | 38 | 20.3 | 45.5 | 6 000 | 8 500 | |
NKX 30 Z | 30 | 42 | 30 | 22.9 | 38 | 20.3 | 45.5 | 6 000 | 5 000 | |
NKXR 30 | 30 | 42 | 30 | 22.9 | 38 | 27 | 78 | 3 000 | 6 000 | |
NKXR 30 Z | 30 | 42 | 30 | 22.9 | 38 | 27 | 78 | 3 000 | 6 000 | |
NX 30 | 30 | 42 | 30 | 22.9 | 38 | 12.7 | 32.5 | 5 300 | 6 000 | |
NX 30 Z | 30 | 42 | 30 | 22.9 | 38 | 12.7 | 32.5 | 5 300 | 3 600 | |
NKX 35 | 35 | 47 | 30 | 24.6 | 45 | 21.2 | 51 | 5 600 | 7 500 | |
NKX 35 Z | 35 | 47 | 30 | 24.6 | 45 | 21.2 | 51 | 5 600 | 4 500 | |
NKXR 35 | 35 | 47 | 30 | 24.6 | 45 | 29 | 93 | 2 800 | 5 600 | |
NKXR 35 Z | 35 | 47 | 30 | 24.6 | 45 | 29 | 93 | 2 800 | 5 600 | |
NX 35 | 35 | 47 | 30 | 24.6 | 45 | 13.5 | 38 | 5 000 | 5 600 | |
NX 35 Z | 35 | 47 | 30 | 24.6 | 45 | 13.5 | 38 | 5 000 | 3 400 | |
NKX 40 | 40 | 52 | 32 | 26.4 | 51 | 27 | 68 | 5 000 | 7 000 | |
NKX 40 Z | 40 | 52 | 32 | 26.4 | 51 | 27 | 68 | 5 000 | 4 000 | |
NKXR 40 | 40 | 52 | 32 | 26.4 | 51 | 43 | 137 | 2 400 | 5 000 | |
NKXR 40 Z | 40 | 52 | 32 | 26.4 | 51 | 43 | 137 | 2 400 | 5 000 | |
NKX 45 | 45 | 58 | 32 | 27.5 | 57 | 28.1 | 75 | 4 500 | 6 300 | |
NKX 45 Z | 45 | 58 | 32 | 27.5 | 57 | 28.1 | 75 | 4 500 | 3 800 | |
NKXR 45 | 45 | 58 | 32 | 27.5 | 57 | 45 | 153 | 2 200 | 4 500 | |
NKXR 45 Z | 45 | 58 | 32 | 27.5 | 57 | 45 | 153 | 2 200 | 4 500 | |
NKX 50 | 50 | 62 | 35 | 38 | 78 | 28.6 | 81.5 | 4 300 | 6 300 | |
NKX 50 Z | 50 | 62 | 35 | 38 | 78 | 28.6 | 81.5 | 4 300 | 3 600 | |
NKXR 50 | 50 | 62 | 35 | 38 | 78 | 47.5 | 166 | 2 200 | 4 300 | |
NKXR 50 Z | 50 | 62 | 35 | 38 | 78 | 47.5 | 166 | 2 200 | 4 300 | |
NKX 60 | 60 | 72 | 40 | 41.8 | 96.5 | 41.6 | 122 | 3 600 | 5 000 | |
NKX 60 Z | 60 | 72 | 40 | 41.8 | 96.5 | 41.6 | 122 | 3 600 | 3 000 | |
NKX 70 | 70 | 85 | 40 | 44.6 | 98 | 43.6 | 137 | 3 400 | 4 500 | |
NKX 70 Z | 70 | 85 | 40 | 44.6 | 98 | 43.6 | 137 | 3 400 | 2 700 |