NA Series Steel Thrust Needle - Roller Bearings NA4917 NA5917 NA6917 85x120x35 mm
Needle roller bearing :
Needle Roller Bearing (needle bearing) is a cylindrical roller with roller bearings, relative to its diameter, roller both thin and long. This is called needle roller. Despite having a smaller cross-section, has a higher load bearing capacity, equipped with a thin and long needle bearing roller (roller diameter D≤5mm, L / D≥2.5, L is the length of the roller), so radial structure is compact, its diameter size and load capacity and other types of bearings, minimum diameter, especially for radial dimensions limited support structure.
Part of the bearing specification :
| NO. | NO. | SIZE (MM) | BASIC LOAD RATING (KN) | LIMITING SPEED | |||||
| with inner | without inner | d | D | B | rs/min | C | C0 | r/min | |
| NA495 | RNA495 | 5 | 13 | 10 | 0.15 | 2.24 | 2.02 | 27200 | |
| NA496 | RNA496 | 6 | 15 | 10 | 0.15 | 3.14 | 2.62 | 25600 | |
| NA497 | RNA497 | 7 | 17 | 10 | 0.15 | 2.44 | 2.77 | 24000 | |
| NA498 | RNA498 | 8 | 19 | 11 | 0.2 | 4.71 | 3.82 | 22400 | |
| NA499 | RNA499 | 9 | 20 | 11 | 0.3 | 5.02 | 4.79 | 20800 | |
| NA4900 | RNA4900 | 10 | 22 | 13 | 0.3 | 8.5 | 9.2 | 25000 | |
| NA4901 | RNA4901 | 12 | 24 | 13 | 0.3 | 9.4 | 10.9 | 24000 | |
| NA4902 | RNA4902 | 15 | 28 | 13 | 0.3 | 10.6 | 13.6 | 22000 | |
| NA4903 | RNA4903 | 17 | 30 | 13 | 0.3 | 11 | 14.6 | 21000 | |
| NA4904 | RNA4904 | 20 | 37 | 17 | 0.3 | 21 | 25.5 | 17000 | |
| NA49/22 | RNA49/22 | 22 | 39 | 17 | 0.3 | 22.8 | 29.5 | 16000 | |
| NA4905 | RNA4905 | 25 | 42 | 17 | 0.3 | 23.6 | 31.5 | 15000 | |
| NA49/28 | RNA49/28 | 28 | 45 | 17 | 0.3 | 24.4 | 33.5 | 13000 | |
| NA4906 | RNA4906 | 30 | 47 | 17 | 0.3 | 25 | 35.5 | 13000 | |
| NA49/32 | RNA49/32 | 32 | 52 | 20 | 0.6 | 30.5 | 47.5 | 12000 | |
| NA4907 | RNA4907 | 35 | 55 | 20 | 0.6 | 31.5 | 50 | 11000 | |
| NA4908 | RNA4908 | 40 | 62 | 22 | 0.6 | 43 | 67 | 9500 | |
| NA4909 | RNA4909 | 45 | 68 | 22 | 0.6 | 45 | 73 | 8500 | |
| NA4910 | RNA4910 | 50 | 72 | 22 | 0.6 | 47 | 80 | 8000 | |
| NA4911 | RNA4911 | 55 | 80 | 25 | 1 | 58 | 100 | 7500 | |
| NA4912 | RNA4912 | 60 | 85 | 25 | 1 | 60 | 108 | 7000 | |
| NA4913 | RNA4913 | 65 | 90 | 25 | 1 | 61 | 112 | 6500 | |
| NA4914 | RNA4914 | 70 | 100 | 30 | 1 | 84 | 156 | 6000 | |
| NA4915 | RNA4915 | 75 | 105 | 30 | 1 | 86 | 162 | 5500 | |
| NA4916 | RNA4916 | 80 | 110 | 30 | 1 | 89 | 174 | 5000 | |
| NA4917 | RNA4917 | 85 | 120 | 35 | 1.1 | 111 | 237 | 4800 | |
| NA4918 | RNA4918 | 90 | 125 | 35 | 1.1 | 114 | 250 | 4300 | |
| NA4919 | RNA4919 | 95 | 130 | 35 | 1.1 | 116 | 260 | 4400 | |
| NA4920 | RNA4920 | 100 | 140 | 40 | 1.1 | 128 | 270 | 4100 | |
| NA4922 | RNA4922 | 110 | 150 | 40 | 1.1 | 132 | 290 | 3800 | |
| NA4924 | RNA4924 | 120 | 165 | 45 | 1.1 | 181 | 390 | 3400 | |
| NA4926 | RNA4926 | 130 | 180 | 50 | 1.5 | 203 | 470 | 3200 | |
Our advantages:
1. Manufacturer,the most competive price and good quality
2. Perfect group of technical engineers give you the best support
3.Well-trained group of international sales provide the best service
4.OEM brand aviliable
5.Rich stock and quick delivery
QC:
We have complete process for the production and quality assurance to make sure our products can meet your requirement. And our quality can compare with the most chinese famous bearing manufacture. we have the same technology. Such as
1. Assembly
2. Windage test
3. Cleaning
4. Rotary test
5. Greasing and gland
6. Noise inspection
7. Appearance inspection
8. Rust prevention
9. Product packaging
