Home > Products > Needle Roller Bearing > high speed tractor gearbox iron cage NA4903 miniature needle roller bearing price NA 4903 size 17x30x13mm
high speed tractor gearbox iron cage NA4903 miniature needle roller bearing price NA 4903 size 17x30x13mm
USD $0.8 - $3
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Product Details
| Brand Name | BHR, OEM | Place of Origin | Shandong, China | |
| Model Number | NA4903 | Number of Row | Single Row | |
| Seals Type | Open bearing, sealed bearing 2rs | Precision Rating | P0 P6 P5 P4 precision bearing |
Product Description
high speed tractor gearbox iron cage NA4903 miniature needle roller bearing price NA 4903 size 17x30x13mm
Product Description
Needle roller bearings are bearings with cylindrical rollers that are small in diameter relative to their length. The modified roller/raceway profile prevents stress peaks to extend bearing service life.
BHR supplies needle roller bearings in many different designs, series and in a wide range of sizes, which make them appropriate for a wide variety of operating conditions and applications.
1. Needle roller and cage assembly
2. Drawn cup needle roller bearings
3. Needle roller bearings with machine rings
4. Alignment needle roller bearings
5. Universal joint bearings
6. Combined needle roller bearings
7. Needle roller thrust bearings
8. Cam follower, track rollers
Specifications: NA4903 needle roller bearing | |
Fw | 17mm |
D | 30mm |
C | 13mm |
Mass | 0.038kgs |
Roller bearing type | needle roller bearing |
number of row | single row |
Bearing feature | with machined rings, with an inner ring |
Bearing cage type | steel cage |
Precision rate | grade p4 p5 p6 p0 |
Bearing closure type | open bearing, 2rs sealed bearing |
Bearing material | steel bearing, stainless steel bearing |
NA49 needle roller bearing size list:
| Bearing No. | Boundary dimensions(mm) | Basic load ratings(N) | Speeds(rpm) | Mass(g) | ||||
| d | Fw | D | B | Cr | Cor | Oil | ||
| NA4900 | 10 | 14 | 22 | 13 | 8006 | 9000 | 23700 | 21.00 |
| NA4901 | 12 | 16 | 24 | 13 | 5047 | 6352 | 20000 | 25.10 |
| NA4902 | 15 | 20 | 28 | 13 | 6447 | 9053 | 18800 | 32.00 |
| NA4903 | 17 | 22 | 30 | 13 | 7010 | 10010 | 17000 | 32.80 |
| NA4904 | 20 | 25 | 37 | 17 | 11912 | 16594 | 16200 | 70.20 |
| NA49/22 | 22 | 28 | 39 | 17 | 12996 | 19175 | 14360 | 76.00 |
| NA4905 | 25 | 30 | 42 | 17 | 13452 | 20475 | 13832 | 76.00 |
| NA49/28 | 28 | 32 | 45 | 17 | 13900 | 20100 | 13832 | 90.70 |
| NA49/32 | 32 | 40 | 52 | 20 | 19000 | 32600 | 11134 | 150.00 |
| NA4907 | 35 | 42 | 55 | 20 | 19800 | 41500 | 11134 | 151.00 |
| NA4908 | 40 | 48 | 62 | 22 | 31036 | 63873 | 8567 | 123.00 |
| NA4909 | 45 | 50 | 68 | 22 | 37000 | 96500 | 8052 | 260.00 |
| NA4910 | 50 | 58 | 72 | 22 | 41000 | 72000 | 7526 | 264.00 |
| NA4911 | 55 | 63 | 80 | 25 | 50600 | 96580 | 7156 | 386.00 |
| NA4912 | 60 | 68 | 85 | 25 | 52800 | 110500 | 6022 | 412.00 |
| NA4913 | 65 | 72 | 90 | 25 | 57500 | 110500 | 6022 | 435.00 |
| NA4914 | 70 | 80 | 100 | 30 | 79000 | 154000 | 5111 | 712.00 |
| NA4915 | 75 | 85 | 105 | 30 | 82000 | 158000 | 5111 | 765.00 |
| NA4916 | 80 | 90 | 110 | 30 | 81000 | 170500 | 5111 | 870.00 |
| NA4917 | 85 | 100 | 120 | 35 | 111000 | 237000 | 4600 | 1250.00 |
| NA4918 | 90 | 105 | 125 | 35 | 114000 | 250000 | 4400 | 1312.00 |
| NA4919 | 95 | 110 | 130 | 35 | 116000 | 260000 | 4200 | 1371.00 |
| NA4920 | 100 | 115 | 140 | 40 | 120000 | 2740000 | 4000 | 1900.00 |
| NA4922 | 110 | 125 | 150 | 40 | 132000 | 290000 | 3700 | 2070.00 |
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