Needle Bearing NA Series
Needle roller bearing NA series introduction
The needle roller bearing NA series, also known as the solid ferrule needle roller bearing, consists of one or two ferrules and a needle roller set with a cage. Depending on the application, it can be divided into bearings with or without inner ring. Therefore, the physical ferrule needle roller bearing can meet the requirements of light weight, small space occupation and large transmission power. Solid ferrule needle bearings have a small volume and high load carrying capacity.
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Needle roller bearing NA series suffix symbol
Subject | Symbol | Description |
Seal type | ZZ | Metal shields on both sides. |
2RS | Rubber seals on both sides. | |
Z | Metal shield on one side. | |
RS | Rubber seal on one side. |
Needle roller bearing NA series structure diagram

Needle roller bearing NA series model list and dimensions
NA49 series
Bearing Number | Nominal Bearing Dimensions(mm) | Bearing Weight (kg) | |||
d | Fw | D | C | ||
NA4900 | 10 | 14 | 22 | 13 | 0.0240 |
NA4900 2RS | 10 | 14 | 14 | 22 | 0.0245 |
NA4901 | 12 | 16 | 24 | 13 | 0.0265 |
NA4901 2RS | 12 | 16 | 14 | 24 | 0.0275 |
NA4902 | 15 | 20 | 28 | 13 | 0.0360 |
NA4902 2RS | 15 | 20 | 14 | 28 | 0.0360 |
NA4903 | 17 | 22 | 30 | 13 | 0.0370 |
NA4903 2RS | 17 | 22 | 14 | 30 | 0.0395 |
NA4904 | 20 | 25 | 37 | 17 | 0.0740 |
NA4904 2RS | 20 | 25 | 18 | 37 | 0.0785 |
NA49/22 | 22 | 28 | 39 | 17 | 0.0800 |
NA49/22 2RS | 22 | 28 | 18 | 39 | 0.0875 |
NA4905 | 25 | 30 | 42 | 17 | 0.0880 |
NA4905 2RS | 25 | 30 | 18 | 42 | 0.0925 |
NA49/28 | 28 | 32 | 45 | 17 | 0.0980 |
NA49/28 2RS | 28 | 32 | 18 | 45 | 0.101 |
NA4906 | 30 | 35 | 47 | 17 | 0.101 |
NA4906 2RS | 30 | 35 | 18 | 47 | 0.106 |
NA49/32 | 32 | 40 | 52 | 20 | 0.157 |
NA49/32 2RS | 32 | 40 | 21 | 52 | 0.167 |
NA4907 | 35 | 42 | 55 | 20 | 0.171 |
NA4907 2RS | 35 | 42 | 21 | 55 | 0.179 |
NA4908 | 40 | 48 | 62 | 22 | 0.232 |
NA4908 2RS | 40 | 48 | 23 | 62 | 0.245 |
NA4909 | 45 | 52 | 68 | 22 | 0.232 |
NA4909 2RS | 45 | 52 | 23 | 68 | 0.290 |
NA4910 | 50 | 58 | 72 | 22 | 0.276 |
NA4910 2RS | 50 | 58 | 23 | 72 | 0.295 |
NA4911 | 55 | 63 | 80 | 25 | 0.396 |
NA4911 2RS | 55 | 63 | 26 | 80 | 0.415 |
NA4912 | 60 | 68 | 85 | 25 | 0.427 |
NA4912 2RS | 60 | 68 | 26 | 85 | 0.445 |
NA4913 | 65 | 72 | 90 | 25 | 0.454 |
NA4913 2RS | 65 | 72 | 26 | 90 | 0.475 |
NA4914 | 70 | 80 | 100 | 30 | 0.727 |
NA4914 2RS | 70 | 80 | 31 | 100 | 0.770 |
NA4915 | 75 | 85 | 105 | 30 | 0.776 |
NA4915 2RS | 75 | 85 | 31 | 105 | 0.815 |
NA4916 | 80 | 90 | 110 | 30 | 0.820 |
NA4916 2RS | 80 | 90 | 31 | 110 | 0.860 |
NA4917 | 85 | 100 | 120 | 35 | 1.240 |
NA4917 2RS | 85 | 100 | 36 | 120 | 1.300 |
NA4918 | 90 | 105 | 125 | 35 | 1.310 |
NA4918 2RS | 90 | 105 | 36 | 125 | 1.360 |
NA4919 | 95 | 110 | 130 | 35 | 1.360 |
NA4919 2RS | 95 | 110 | 36 | 130 | 1.420 |
NA4920 | 100 | 115 | 140 | 40 | 1.930 |
NA4920 2RS | 100 | 115 | 41 | 140 | 1.980 |
NA4922 | 110 | 125 | 150 | 40 | 2.080 |
NA4922 2RS | 110 | 125 | 41 | 150 | 2.150 |
NA4924 | 120 | 135 | 165 | 45 | 2.840 |
NA4924 2RS | 120 | 135 | 46 | 165 | 2.990 |
NA4926 | 130 | 150 | 180 | 50 | 3.900 |
NA4926 2RS | 130 | 150 | 51 | 180 | 4.080 |
NA4928 | 140 | 160 | 190 | 50 | 4.050 |
NA4928 2RS | 140 | 160 | 51 | 190 | 4.340 |
NA4930 | 150 | 170 | 210 | 60 | 6.380 |
NA4932 | 160 | 180 | 220 | 60 | 6.750 |
NA4934 | 170 | 190 | 230 | 60 | 7.110 |
NA4936 | 180 | 205 | 250 | 69 | 10.200 |
NA4938 | 190 | 215 | 260 | 69 | 10.700 |
NA4940 | 200 | 225 | 280 | 80 | 15.400 |
NA4944 | 220 | 245 | 300 | 80 | 16.700 |
NA4948 | 240 | 265 | 320 | 80 | 18.000 |
NA4952 | 260 | 290 | 360 | 100 | 31.100 |
NA4956 | 280 | 310 | 380 | 100 | 33.100 |
NA4960 | 300 | 340 | 420 | 118 | 51.400 |
NA4964 | 320 | 360 | 440 | 118 | 54.400 |
NA4968 | 340 | 380 | 460 | 118 | 57.300 |
NA4972 | 360 | 400 | 480 | 118 | 60.200 |
NA4976 | 380 | 430 | 520 | 140 | 90.300 |
NA4980 | 400 | 450 | 540 | 140 | 94.400 |
NA4984 | 420 | 470 | 560 | 140 | 98.500 |
NA4988 | 440 | 490 | 600 | 160 | 131.00 |
NA69 series
Bearing Number | Nominal Bearing Dimensions(mm) | Bearing Weight (kg) | |||
d | Fw | D | C | ||
NA6901 | 12 | 16 | 24 | 22 | 0.046 |
NA6901 2RS | 12 | 16 | 23 | 24 | 0.0455 |
NA6902 | 15 | 20 | 28 | 23 | 0.064 |
NA6902 2RS | 15 | 20 | 24 | 28 | 0.0625 |
NA6903 | 17 | 22 | 30 | 23 | 0.069 |
NA6903 2RS | 17 | 22 | 24 | 30 | 0.0685 |
NA6904 | 20 | 25 | 37 | 30 | 0.141 |
NA6904 2RS | 20 | 25 | 31 | 37 | 0.137 |
NA69/22 | 22 | 28 | 39 | 30 | 0.154 |
NA69/22 2RS | 22 | 28 | 31 | 39 | 0.153 |
NA6905 | 25 | 30 | 42 | 30 | 0.162 |
NA6905 2RS | 25 | 30 | 31 | 42 | 0.162 |
NA69/28 | 28 | 32 | 45 | 30 | 0.179 |
NA69/28 2RS | 28 | 32 | 31 | 45 | 0.177 |
NA6906 | 30 | 35 | 47 | 30 | 0.185 |
NA6906 2RS | 30 | 35 | 31 | 47 | 0.185 |
NA69/32 | 32 | 40 | 52 | 36 | 0.286 |
NA69/32 2RS | 32 | 40 | 37 | 52 | 0.300 |
NA6907 | 35 | 42 | 55 | 36 | 0.310 |
NA6907 2RS | 35 | 42 | 37 | 55 | 0.320 |
NA6908 | 40 | 48 | 62 | 40 | 0.426 |
NA6908 2RS | 40 | 48 | 41 | 62 | 0.440 |
NA6909 | 45 | 52 | 68 | 40 | 0.437 |
NA6909 2RS | 45 | 52 | 41 | 68 | 0.520 |
NA6910 | 50 | 58 | 72 | 40 | 0.529 |
NA6910 2RS | 50 | 58 | 41 | 72 | 0.530 |
NA6911 | 55 | 63 | 80 | 45 | 0.726 |
NA6911 2RS | 55 | 63 | 46 | 80 | 0.730 |
NA6912 | 60 | 68 | 85 | 45 | 0.758 |
NA6912 2RS | 60 | 68 | 46 | 85 | 0.785 |
NA6913 | 65 | 72 | 90 | 45 | 0.779 |
NA6913 2RS | 65 | 72 | 46 | 90 | 0.845 |
NA6914 | 70 | 80 | 100 | 54 | 1.340 |
NA6914 2RS | 70 | 80 | 55 | 100 | 1.400 |
NA6915 | 75 | 85 | 105 | 54 | 1.450 |
NA6915 2RS | 75 | 85 | 55 | 105 | 1.480 |
NA6916 | 80 | 90 | 110 | 54 | 1.530 |
NA6916 2RS | 80 | 90 | 55 | 110 | 1.570 |
NA6917 | 85 | 100 | 120 | 63 | 2.250 |
NA6917 2RS | 85 | 100 | 64 | 120 | 2.360 |
NA6918 | 90 | 105 | 125 | 63 | 2.440 |
NA6918 2RS | 90 | 105 | 64 | 125 | 2.480 |
NA6919 | 95 | 110 | 130 | 63 | 2.630 |
NA6919 2RS | 95 | 110 | 64 | 130 | 2.600 |