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NA Series NA6909-ZW NA6904 NA6905 USMA Bearing NA6906 Bearing Rollers NA6902 High Quality Needle Roller Bearings
NA Series NA6909-ZW NA6904 NA6905 USMA Bearing NA6906 Bearing Rollers NA6902 High Quality Needle Roller Bearings
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NA6902
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USMA
NA Series NA6909-ZW NA6904 NA6905 USMA Bearing NA6906 Bearing Rollers NA6902 High Quality Needle Roller Bearings
The needle roller bearing is a bearing which uses small cylindrical rollers. They are used to reduce friction of a rotating surface. Needle bearings have a large surface area that is in contact with the bearing outer surfaces compared to ball bearings. Additionally there is less added clearance (difference between the diameter of the shaft and the diameter of the bearing) so they are much more compact.
The typical structure consists of a needle cage which orients and contains the needle rollers, the needle rollers thems.elves, and an outer race (sometimes the housing itself).
Radial needle bearings are cylindrical and use rollers parallel to the axis of the shaft. Thrust needle bearings are flat and use a radial pattern of needles.
needle roller bearing classification :
1. Radial needle roller and cage assemblies
2. NA, NKI type needle roller bearings
3. RNA, NK model without inner ring needle roller bearings
4. Type HK stamping outer ring needle roller bearing
5. Type BK stamping outer ring needle roller bearing
Application
Agricultural machinery industry, construction industry, hydro and wind engineering industry, construction machinery industry, machine tools and manufacturing machinery industry, material handling and packaging industry, port engineering industry, electric tools industry, transmission industry, the semiconductor industry, pump and fan industry, industrial robotics and automation industry, rubber, plastic and chemical industry, textile industry, tractor industry, woodworking machinery industry .
NO. | NO. | SIZE (MM) | BASIC LOAD RATING (KN) | LIMITING SPEED | |||||
with inner | without inner | d | Fw | D | C | rs/min | C | C0 | r/min |
Need Roller Bearing NA495 | RNA495 | 5 | 7 | 13 | 10 | 0.15 | 2.24 | 2.02 | 27200 |
Need Roller Bearing NA496 | RNA496 | 6 | 8 | 15 | 10 | 0.15 | 3.14 | 2.62 | 25600 |
Need Roller Bearing NA497 | RNA497 | 7 | 9 | 17 | 10 | 0.15 | 2.44 | 2.77 | 24000 |
Need Roller Bearing NA498 | RNA498 | 8 | 10 | 19 | 11 | 0.2 | 4.71 | 3.82 | 22400 |
Need Roller Bearing NA499 | RNA499 | 9 | 12 | 20 | 11 | 0.3 | 5.02 | 4.79 | 20800 |
Need Roller Bearing NA4900 | RNA4900 | 10 | 14 | 22 | 13 | 0.3 | 8.5 | 9.2 | 25000 |
Need Roller Bearing NA4901 | RNA4901 | 12 | 16 | 24 | 13 | 0.3 | 9.4 | 10.9 | 24000 |
Need Roller Bearing NA4902 | RNA4902 | 15 | 20 | 28 | 13 | 0.3 | 10.6 | 13.6 | 22000 |
Need Roller Bearing NA4903 | RNA4903 | 17 | 22 | 30 | 13 | 0.3 | 11 | 14.6 | 21000 |
Need Roller Bearing NA4904 | RNA4904 | 20 | 25 | 37 | 17 | 0.3 | 21 | 25.5 | 17000 |
Need Roller Bearing NA49/22 | RNA49/22 | 22 | 28 | 39 | 17 | 0.3 | 22.8 | 29.5 | 16000 |
Need Roller Bearing NA4905 | RNA4905 | 25 | 30 | 42 | 17 | 0.3 | 23.6 | 31.5 | 15000 |
Need Roller Bearing NA49/28 | RNA49/28 | 28 | 32 | 45 | 17 | 0.3 | 24.4 | 33.5 | 13000 |
Need Roller Bearing NA4906 | RNA4906 | 30 | 35 | 47 | 17 | 0.3 | 25 | 35.5 | 13000 |
Need Roller Bearing NA49/32 | RNA49/32 | 32 | 40 | 52 | 20 | 0.6 | 30.5 | 47.5 | 12000 |
Need Roller Bearing NA4907 | RNA4907 | 35 | 42 | 55 | 20 | 0.6 | 31.5 | 50 | 11000 |
Need Roller Bearing NA4908 | RNA4908 | 40 | 48 | 62 | 22 | 0.6 | 43 | 67 | 9500 |
Need Roller Bearing NA4909 | RNA4909 | 45 | 52 | 68 | 22 | 0.6 | 45 | 73 | 8500 |
Need Roller Bearing NA4910 | RNA4910 | 50 | 58 | 72 | 22 | 0.6 | 47 | 80 | 8000 |
Need Roller Bearing NA4911 | RNA4911 | 55 | 63 | 80 | 25 | 1 | 58 | 100 | 7500 |
Need Roller Bearing NA4912 | RNA4912 | 60 | 68 | 85 | 25 | 1 | 60 | 108 | 7000 |
Need Roller Bearing NA4913 | RNA4913 | 65 | 72 | 90 | 25 | 1 | 61 | 112 | 6500 |
Need Roller Bearing NA4914 | RNA4914 | 70 | 80 | 100 | 30 | 1 | 84 | 156 | 6000 |
Need Roller Bearing NA4915 | RNA4915 | 75 | 85 | 105 | 30 | 1 | 86 | 162 | 5500 |
Need Roller Bearing NA4916 | RNA4916 | 80 | 90 | 110 | 30 | 1 | 89 | 174 | 5000 |
Need Roller Bearing NA4917 | RNA4917 | 85 | 100 | 120 | 35 | 1.1 | 111 | 237 | 4800 |
Need Roller Bearing NA4918 | RNA4918 | 90 | 105 | 125 | 35 | 1.1 | 114 | 250 | 4300 |
Need Roller Bearing NA4919 | RNA4919 | 95 | 110 | 130 | 35 | 1.1 | 116 | 260 | 4400 |
NA Series NA6909-ZW NA6904 NA6905 USMA Bearing NA6906 Bearing Rollers NA6902 High Quality Needle Roller Bearings
The needle roller bearing is a bearing which uses small cylindrical rollers. They are used to reduce friction of a rotating surface. Needle bearings have a large surface area that is in contact with the bearing outer surfaces compared to ball bearings. Additionally there is less added clearance (difference between the diameter of the shaft and the diameter of the bearing) so they are much more compact.
The typical structure consists of a needle cage which orients and contains the needle rollers, the needle rollers thems.elves, and an outer race (sometimes the housing itself).
Radial needle bearings are cylindrical and use rollers parallel to the axis of the shaft. Thrust needle bearings are flat and use a radial pattern of needles.
needle roller bearing classification :
1. Radial needle roller and cage assemblies
2. NA, NKI type needle roller bearings
3. RNA, NK model without inner ring needle roller bearings
4. Type HK stamping outer ring needle roller bearing
5. Type BK stamping outer ring needle roller bearing
Application
Agricultural machinery industry, construction industry, hydro and wind engineering industry, construction machinery industry, machine tools and manufacturing machinery industry, material handling and packaging industry, port engineering industry, electric tools industry, transmission industry, the semiconductor industry, pump and fan industry, industrial robotics and automation industry, rubber, plastic and chemical industry, textile industry, tractor industry, woodworking machinery industry .
NO. | NO. | SIZE (MM) | BASIC LOAD RATING (KN) | LIMITING SPEED | |||||
with inner | without inner | d | Fw | D | C | rs/min | C | C0 | r/min |
Need Roller Bearing NA495 | RNA495 | 5 | 7 | 13 | 10 | 0.15 | 2.24 | 2.02 | 27200 |
Need Roller Bearing NA496 | RNA496 | 6 | 8 | 15 | 10 | 0.15 | 3.14 | 2.62 | 25600 |
Need Roller Bearing NA497 | RNA497 | 7 | 9 | 17 | 10 | 0.15 | 2.44 | 2.77 | 24000 |
Need Roller Bearing NA498 | RNA498 | 8 | 10 | 19 | 11 | 0.2 | 4.71 | 3.82 | 22400 |
Need Roller Bearing NA499 | RNA499 | 9 | 12 | 20 | 11 | 0.3 | 5.02 | 4.79 | 20800 |
Need Roller Bearing NA4900 | RNA4900 | 10 | 14 | 22 | 13 | 0.3 | 8.5 | 9.2 | 25000 |
Need Roller Bearing NA4901 | RNA4901 | 12 | 16 | 24 | 13 | 0.3 | 9.4 | 10.9 | 24000 |
Need Roller Bearing NA4902 | RNA4902 | 15 | 20 | 28 | 13 | 0.3 | 10.6 | 13.6 | 22000 |
Need Roller Bearing NA4903 | RNA4903 | 17 | 22 | 30 | 13 | 0.3 | 11 | 14.6 | 21000 |
Need Roller Bearing NA4904 | RNA4904 | 20 | 25 | 37 | 17 | 0.3 | 21 | 25.5 | 17000 |
Need Roller Bearing NA49/22 | RNA49/22 | 22 | 28 | 39 | 17 | 0.3 | 22.8 | 29.5 | 16000 |
Need Roller Bearing NA4905 | RNA4905 | 25 | 30 | 42 | 17 | 0.3 | 23.6 | 31.5 | 15000 |
Need Roller Bearing NA49/28 | RNA49/28 | 28 | 32 | 45 | 17 | 0.3 | 24.4 | 33.5 | 13000 |
Need Roller Bearing NA4906 | RNA4906 | 30 | 35 | 47 | 17 | 0.3 | 25 | 35.5 | 13000 |
Need Roller Bearing NA49/32 | RNA49/32 | 32 | 40 | 52 | 20 | 0.6 | 30.5 | 47.5 | 12000 |
Need Roller Bearing NA4907 | RNA4907 | 35 | 42 | 55 | 20 | 0.6 | 31.5 | 50 | 11000 |
Need Roller Bearing NA4908 | RNA4908 | 40 | 48 | 62 | 22 | 0.6 | 43 | 67 | 9500 |
Need Roller Bearing NA4909 | RNA4909 | 45 | 52 | 68 | 22 | 0.6 | 45 | 73 | 8500 |
Need Roller Bearing NA4910 | RNA4910 | 50 | 58 | 72 | 22 | 0.6 | 47 | 80 | 8000 |
Need Roller Bearing NA4911 | RNA4911 | 55 | 63 | 80 | 25 | 1 | 58 | 100 | 7500 |
Need Roller Bearing NA4912 | RNA4912 | 60 | 68 | 85 | 25 | 1 | 60 | 108 | 7000 |
Need Roller Bearing NA4913 | RNA4913 | 65 | 72 | 90 | 25 | 1 | 61 | 112 | 6500 |
Need Roller Bearing NA4914 | RNA4914 | 70 | 80 | 100 | 30 | 1 | 84 | 156 | 6000 |
Need Roller Bearing NA4915 | RNA4915 | 75 | 85 | 105 | 30 | 1 | 86 | 162 | 5500 |
Need Roller Bearing NA4916 | RNA4916 | 80 | 90 | 110 | 30 | 1 | 89 | 174 | 5000 |
Need Roller Bearing NA4917 | RNA4917 | 85 | 100 | 120 | 35 | 1.1 | 111 | 237 | 4800 |
Need Roller Bearing NA4918 | RNA4918 | 90 | 105 | 125 | 35 | 1.1 | 114 | 250 | 4300 |
Need Roller Bearing NA4919 | RNA4919 | 95 | 110 | 130 | 35 | 1.1 | 116 | 260 | 4400 |
