Changzhou Zhihua Bearings Co., Ltd.
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NA Type Heavy Duty Needle Roller Bearings
NA48 RNA48 type heavy duty needle roller bearings consist of a machined and ground channel-shaped outer ring with a component of needle rollers retained and guided by a cage. The high-strength cage.The high-strength cage retains and guides the rollers. An optional groove and hole in the outer ring facilitate relubrication.These NA48 RNA48 type heavy duty needle roller bearings can be used with or without a machined or ground inner ring, depending on the suitablility of the shaft as a raceway surface.
| Bearing Designation |
Mass (g) |
Bearing Designation |
Mass (g) |
Boundary Dimensions(mm) | Allow offset (s) |
Basic Load Rating(kN) | Limiting Speed (rpm) |
|||||
| d | Fw | D | C | rmin | Dynamic | Static | ||||||
| NA4822 | 1110 | RNA4822 | 670 | 110 | 120 | 140 | 30 | 1 | 0.8 | 74.8 | 168 | 2640 |
| NA4824 | 1170 | RNA4824 | 730 | 120 | 130 | 150 | 30 | 1 | 0.8 | 79.6 | 186.4 | 2480 |
| NA4826 | 1820 | RNA4826 | 950 | 130 | 145 | 170 | 35 | 1.1 | 1 | 94.4 | 244 | 2240 |
| NA4828 | 1600 | RNA4828 | 1020 | 140 | 155 | 175 | 35 | 1.1 | 1 | 96.8 | 252 | 2080 |
| NA4830 | 2720 | RNA4830 | 1600 | 150 | 165 | 190 | 40 | 1.1 | 1.5 | 121.6 | 312 | 1920 |
| NA4832 | 2900 | RNA4832 | 1700 | 160 | 175 | 200 | 40 | 1.1 | 1.5 | 128 | 340 | 1840 |
| NA4834 | 3990 | RNA4834 | 2540 | 170 | 185 | 215 | 45 | 1.1 | 1.5 | 148 | 396 | 1760 |
| NA4836 | 4190 | RNA4836 | 2680 | 180 | 195 | 225 | 45 | 1.1 | 1.5 | 156 | 432 | 1680 |
| NA4838 | 5620 | RNA4838 | 3210 | 190 | 210 | 240 | 50 | 1.5 | 1.5 | 181.6 | 544 | 1520 |
| NA4840 | 5840 | RNA4840 | 3350 | 200 | 220 | 250 | 50 | 1.5 | 1.5 | 184.8 | 564 | 1440 |
| NA4844 | 6370 | RNA4844 | 3620 | 220 | 240 | 270 | 50 | 1.5 | 1.5 | 193.6 | 616 | 1360 |
| (NA4848) | 10000 | (RNA4848) | 5400 | 240 | 265 | 300 | 60 | 2 | 2 | 288 | 864 | 1200 |
| (NA4852) | 10800 | (RNA4852) | 5800 | 260 | 285 | 320 | 60 | 2 | 2 | 300 | 928 | 1120 |
| (NA4856) | 15500 | (RNA4856) | 9300 | 280 | 305 | 350 | 69 | 2 | 2.5 | 364 | 1040 | 1040 |
| (NA4860) | 22000 | (RNA4860) | 12700 | 300 | 330 | 380 | 80 | 2.1 | 2 | 500 | 1416 | 960 |
| (NA4864) | 23200 | (RNA4864) | 13400 | 320 | 350 | 400 | 80 | 2.1 | 2 | 512 | 1480 | 880 |
| (NA4868) | 24100 | (RNA4868) | 14000 | 340 | 370 | 420 | 80 | 2.1 | 2 | 524 | 1552 | 880 |
| (NA4872) | 25700 | (RNA4872) | 14800 | 360 | 390 | 440 | 80 | 2.1 | 2 | 532 | 1616 | 800 |
| (NA4876) | 44500 | (RNA4876) | 26000 | 380 | 415 | 480 | 100 | 2.1 | 2 | 800 | 2272 | 760 |
FAQ:
1. What is your the payment condition?
For regular products,No advance payment is needed, you can make 100% payment before shipment accordingly.
For customized products,our payment term normally is 30% of advance, the balance 70% against copy of BOL.
For our long term customers,you can pay 1 month after receiving the good.
2. What is your sales turnover?
Our whole year sales turnover in 2023 to 2024 is 11 million dollars
3. Do you have any certifications?
Yes, We are an IATF16949 certified needle bearings manufacturer since 2011.
4.What about the lead time?
Our production period is 30-45 days
5.What is your production capacity?
We are able to produce over 100 million pieces of bearings per year with different sizes and types