1. Instruction of Needle Roller Bearings:
Needle roller bearings are roller bearings with cylindrical rollers that are small in diameter. In spite of their low cross section, needle roller bearings have a high load carrying capacity and are therefore extremely suitable for bearing arrangements where radial space is limited.
2. Needle roller bearings design include:
- Solid Cup Needle Roller Bearings
- Cage and Needle Roller Assemblies
- Inner rings for Needle Roller Bearings
- Cam and Roller Followers
- Needle Rollers
- Needle Roller Thrust Bearings
- Combined Needle Roller Bearings
Model HK, TA, TLA, open-end drawn cup needle roller bearings with retainer,
Model BK close-end drawn cup needle roller bearing with retainer,
Model SCE, BA, J, JH, drawn cup needle roller bearings (Inch series).Â
3. Application:
Automotive transmissions, air-conditioner compressors, bulldozer blades,Â
overhead traveling cranes, gearboxes, machine tool spindles, copying machines and many more.Â
4. General Drawings of some types of Needle Roller Bearings:
5. More Part Numbers of Needle Roller Bearings We Produce:
Â
model |
inner diameter |
outer diameter |
width |
HJ101812 |
15.8750 |
28.5750 |
19.0500 |
HJ101816 |
15.8750 |
28.5750 |
25.4000 |
HJ122012 |
19.0500 |
31.7500 |
19.0500 |
HJ122016 |
19.0500 |
31.7500 |
25.4000 |
HJ142212 |
22.2250 |
34.9250 |
19.0500 |
HJ142216 |
22.2250 |
34.9250 |
25.4000 |
HJ162412 |
25.4000 |
38.1000 |
19.0500 |
HJ162416 |
25.4000 |
38.1000 |
25.4000 |
HJ182616 |
28.5750 |
41.2750 |
25.4000 |
HJ182620 |
28.5750 |
41.2750 |
31.7500 |
HJ202816 |
31.7500 |
44.4500 |
25.4000 |
HJ202820 |
31.7500 |
44.4500 |
31.7500 |
HJ223016 |
34.9750 |
47.6250 |
25.4000 |
HJ223020 |
34.9250 |
47.6250 |
31.7500 |
HJ243316 |
38.1000 |
52.3875 |
25.4000 |
HJ243320 |
38.1000 |
52.3875 |
31.7500 |
HJ263516 |
41.2750 |
55.5625 |
25.4000 |
HJ263520 |
41.2750 |
55.5625 |
31.7500 |
HJ283716 |
44.4500 |
58.7375 |
25.4000 |
HJ283720 |
44.4500 |
58.7375 |
31.7500 |
HJ303920 |
47.6250 |
61.9125 |
31.7500 |
HJ324116 |
50.8000 |
65.0875 |
25.4000 |
HJ324120 |
50.8000 |
65.0875 |
31.7500 |
HJ364824 |
57.1500 |
76.2000 |
38.1000 |
HJ364828 |
57.1500 |
76.2000 |
44.4500 |
HJ405224 |
63.5000 |
82.5500 |
38.1000 |
HJ405228 |
63.5000 |
82.5500 |
44.4500 |
HJ445616 |
69.8500 |
88.9000 |
25.4000 |
HJ445624 |
69.8500 |
88.9000 |
38.1000 |
HJ445628 |
69.8500 |
88.9000 |
44.4500 |
HJ486024 |
76.2000 |
95.2500 |
38.1000 |
HJ486028 |
76.2000 |
95.2500 |
44.4500 |
HJ526828 |
82.5500 |
 |
44.4500 |
HJ567232 |
88.9000 |
 |
50.8000 |
HJ607632 |
95.2500 |
 |
50.8000 |
Â
| Shaft diameter | Bearing Modle | weight |  Dimension | Rated load |  | |||||
| Mass | Â | Â | Â | Â | Â | Â | Â | |||
| Shaft | Bearing Designation | Approximate value | BoundaryDimensions | BasicLoadRating | Limiting Speed | |||||
| Diameter | Â | Â | Approx | d | Fw | D | B | Â | Â | Â Oil |
| Dynamic | Static | |||||||||
| mm | CurrentCode | OriginalCode | g | mm | N | rpm | ||||
| 5 | NA495 | Â | 7 | 5 | Â | 13 | 10 | 2670 | 2350 | 34000 |
| NA495TN | Â | 7 | 5 | Â | 13 | 10 | 2670 | 2350 | 34000 | |
| 6 | NA496 | Â | 9 | 6 | Â | 15 | 10 | 3150 | 3000 | 32000 |
| 7 | NA497 | Â | 12 | 7 | Â | 17 | 10 | 3600 | 3650 | 30000 |
| 8 | NKI8/16 | Â | Â | 8 | 14 | 25 | 16 | 12400 | 11300 | 21500 |
| NA498 | Â | 16 | 8 | Â | 19 | 11 | 4300 | 3950 | 28000 | |
| 9 | NKI9/12 | Â | 16.6 | 9 | 12 | 19 | 12 | 6200 | 7000 | 21700 |
| NA499 | Â | 17 | 9 | Â | 20 | 11 | 4850 | 4900 | 26000 | |
| NKI9/16 | Â | 21.9 | 9 | Â | 19 | 16 | Â | Â | Â | |
| 10 | NKI10/16 | Â | 27.3 | 10 | 14 | 22 | 16 | 9800 | 10500 | 19650 |
| NA4900 | 4524900 | 21 | 10 | 14 | 22 | 13 | 8000 | 9000 | 23700 | |
| NA6900 | 6534900 | 38.4 | 10 | 14 | 22 | 22 | 9000 | 11000 | 23700 | |
| 12 | NA4901 | 4524901 | 25.1 | 12 | 16 | 24 | 13 | 9000 | 10800 | 20000 |
| NKI12/20 | Â | 39 | 12 | 16 | 24 | 20 | 14000 | 18400 | 21000 | |
| NA6901 | 6534901 | 44.5 | 12 | 16 | 24 | 22 | 6000 | 21600 | 20000 | |
| NKIS12 | Â | 58 | 12 | 18 | 30 | 16 | 16000 | 17000 | 20000 | |
| NA12X32X15V | Â | Â | 12 | Â | 32 | 15 | Â | Â | Â | |
| 15 | NKI15/16 | Â | 38 | 15 | 19 | 27 | 16 | 8800 | 12800 | 19100 |
| NKI15/20 | Â | 45.7 | 15 | 19 | 27 | 20 | 12300 | 19000 | 19100 | |
| NA4902 | 4924902 | 32 | 15 | 20 | 28 | 13 | 6400 | 9000 | 18000 | |
| NA6902 | 6534902 | 61.6 | 15 | 20 | 28 | 23 | 13100 | 20900 | 18000 | |
| NKIS15 | Â | 90 | 15 | 22 | 35 | 20 | 23500 | 24000 | 17000 | |
| NA5902 | Â | 52 | 15 | 20 | 28 | 18 | Â | Â | Â | |
| NAI53212 | Â | Â | 15 | Â | 32 | 12 | Â | Â | Â | |
| 74802 | 74802 | Â | 15 | Â | 36 | 25.4 | Â | Â | Â | |
| 16 | NKIS16 | Â | Â | 16 | Â | 28 | 16 | 13000 | 17400 | 22000 |
| NA16X36X24 | Â | Â | 16 | Â | 36 | 24 | Â | Â | Â | |
| 17 | NKI17/16 | Â | 41.1 | 17 | 21 | 29 | 16 | 13000 | 18200 | 20000 |
| NA4903 | 4544903 | 32.8 | 17 | 22 | 30 | 13 | 7000 | 10000 | 17000 | |
| NA6903 | 6534903 | 68.2 | 17 | 22 | 30 | 23 | 14400 | 24900 | 17000 | |
| NA5903 | Â | 56 | 17 | 22 | 30 | 18 | 15200 | 21700 | 18000 | |
| NA17 | Â | Â | 17 | Â | 37 | 20 | Â | Â | Â | |
| 20 | NKI20/16 | Â | 48.5 | 20 | 24 | 32 | 16 | 10800 | 17000 | 16700 |
| NA4904 | 4524904 | 70.2 | 20 | 25 | 37 | 17 | 21000 | 25000 | 17000 | |
| NKIS20 | Â | 119 | 20 | 28 | 42 | 20 | 28000 | 35500 | 15000 | |
| NA6904 | 6254904 | Â | 20 | 25 | 37 | 30 | 36000 | 51000 | 17000 | |
| NA5904 | Â | Â | 20 | 25 | 37 | 23 | Â | Â | Â | |
| 22 | NKI22/16 | Â | 50 | 22 | 26 | 34 | 16 | 15300 | 23600 | 17000 |
| NA49/22 | Â | 76 | 22 | 28 | 39 | 17 | 22000 | 29500 | 15000 | |
| NA69/22 | Â | 130 | 22 | 28 | 39 | 30 | 37500 | 55000 | 15000 | |
| NA223934 | Â | Â | 22 | 28 | 39 | 34 | Â | Â | Â | |
| 23 | NA2020 | Â | Â | 23 | Â | 42 | 22 | Â | Â | Â |
| 25 | NKI25/30 | Â | 115 | 25 | 29 | 38 | 30 | 31500 | 56000 | 14000 |
| NA4905 | 4524905 | 76 | 25 | 30 | 42 | 17 | 23600 | 31500 | 14000 | |
| NA6905 | 6534905 | 138 | 25 | 30 | 42 | 30 | 29000 | 59000 | 14000 | |
| NKIS25 | Â | 160 | 25 | 32 | 47 | 22 | 32000 | 55000 | 13000 | |
| Â | F-208277 | Â | 25 | 32 | 47 | 22 | Â | Â | Â | |
| NKl25/20 | Â | Â | 25 | 29 | 38 | 20 | 21900 | 34000 | 15000 | |
| NA5905 | Â | 139 | 25 | 30 | 42 | 23 | 30500 | 43000 | 13000 | |
| 28 | NA49/28 | 45449/28 | 98 | 28 | 32 | 45 | 17 | 24000 | 33500 | 14000 |
| NA69/28 | Â | 170 | 28 | 32 | 45 | 30 | 40500 | 63000 | 14000 | |
| NKI28/20 | Â | Â | 28 | 32 | 42 | 20 | 23000 | 37500 | 14000 | |
| 30 | NA4906 | 4544906 | 115 | 30 | 35 | 47 | 17 | 25000 | 35500 | 13000 |
| NA5906 | 6534906 | 152 | 30 | 35 | 47 | 23 | Â | Â | Â | |
| NA6906 | Â | Â | 30 | 35 | 47 | 30 | 43500 | 71000 | 13000 | |
| NKI30/20 | Â | Â | 30 | 35 | 45 | 20 | 24000 | 42500 | 13000 | |
| NKI30/30 | Â | Â | 30 | 35 | 45 | 30 | 36500 | 69000 | 13000 | |
| 32 | NK132/20 | Â | Â | 32 | 37 | 47 | 20 | 24900 | 43900 | 12000 |
| Â | TAFI324720 | Â | 32 | 37 | 47 | 20 | 24900 | 43500 | 12000 | |
| NA49/32 | 45449/32 | 150 | 32 | 40 | 52 | 20 | 24900 | 43500 | 12000 | |
| NA69/32 | 66349/32 | 272 | 32 | 40 | 52 | 36 | 100000 | 100000 | 11000 | |
| 35 | NKI35/30 | Â | 165 | 35 | 40 | 50 | 30 | 39000 | 79000 | 11000 |
| NA4907 | 4524907 | 151 | 35 | 42 | 55 | 20 | 19800 | 41500 | 11000 | |
| NA6907 | 6534907 | 301 | 35 | 42 | 55 | 36 | 26000 | 60500 | 11000 | |
| NKIS35 | Â | 220 | 35 | 43 | 58 | 22 | 33000 | 56000 | 9500 | |
| NA5907 | Â | 256 | 35 | 42 | 55 | 27 | Â | Â | Â | |
| 40 | NKI40/20 | Â | 124 | 40 | 45 | 55 | 20 | 22000 | 48000 | 10000 |
| NKI40/30 | Â | 184 | 40 | 45 | 55 | 30 | 35000 | 86000 | 10000 | |
| NA4908 | 4544908 | 240 | 40 | 48 | 62 | 22 | 42000 | 65000 | 8500 | |
| NA6908 | Â | 401 | 40 | 48 | 62 | 40 | 64000 | 112000 | 8500 | |
| NA5908 | Â | 348 | 40 | 48 | 62 | 30 | 53000 | 92500 | 8500 | |
| 42 | NKI42/20 | Â | 138 | 40 | Drum Wood Chipper The structural composition of the drum chip machine: the frame, cutter roller, upper and lower feeding roller, conveyor belt, hydraulic system and other parts constitute the structural main body of the drum chip machine.The base of the drum slicer is welded with high cavity steel plate, which is the basic support part of the whole drum Wood Chipper.Two flying knives are mounted on the drum type wood slicer.Using the flying knife bolt made for the drum chipper, the flying knife is fixed on the cutter roller through the pressure block;Such a design can be based on the different cutting materials, feeding roller can be used in a certain range of hydraulic system to float up and down, can achieve the effect of cutting different specifications of wood chips. Hammer Roller Wood Crusher,Plyboard Wood Chipper,Crushing Plyboard Wood Crusher,Drum Wood Chipper Jinan Shanghangda Machinery Co., Ltd. , https://www.jnwoodmachine.com | |||||