Changzhou Zhihua Bearings Co., Ltd.
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NKI Type Heavy Duty Needle Roller Bearings
When it is impractical to finish the shaft to meet the desired raceway design requirements, an inner ring may be used. Standard needle roller bearings are available with inner rings (such as the NA Series) forming complete bearings. Bearings furnished with inner rings meet the quality requirements in accordance with ISO standards.
| Mass (g) |
Mass (g) |
Boundary Dimensions(mm) | Allow offset (s) |
Basic Load Rating(kN) | Limiting Speed (rpm) |
|||||||
| Bearing | Bearing | |||||||||||
| Designation | Designation | |||||||||||
| With Inner | Without Inner | d | Fw | D | C | rmin | Dynamic | Static | ||||
| NK5/10TN | 3.1 | 5 | 10 | 10 | 0.15 | 2.11 | 1.75 | 32000 | ||||
| NK5/12TN | 3.7 | 5 | 10 | 12 | 0.15 | 2.18 | 1.8 | 32000 | ||||
| NK6/10TN | 4.7 | 6 | 12 | 10 | 0.15 | 2.13 | 1.82 | 29600 | ||||
| NK6/12TN | 5.7 | 6 | 12 | 12 | 0.15 | 2.72 | 2.52 | 29600 | ||||
| NK7/10 | 6.9 | 7 | 14 | 10 | 0.3 | 2.14 | 1,88 | 27200 | ||||
| NK7/12 | 8.2 | 7 | 14 | 12 | 0.3 | 2.72 | 2.56 | 27200 | ||||
| NKI5/12 | 12 | NK8/12 | 8.7 | 5 | 8 | 15 | 12 | 0.3 | 1.5 | 3.2 | 3.28 | 25600 |
| NK8/16 | 12 | 8 | 15 | 16 | 0.3 | 3.88 | 4.16 | 25600 | ||||
| NKI6/12 | 13 | NK9/12 | 10 | 6 | 9 | 16 | 12 | 0.3 | 1.5 | 3.64 | 4 | 24000 |
| NKI6/16 | 17 | NK9/16 | 13 | 6 | 9 | 16 | 16 | 0.3 | 2 | 4.4 | 5.12 | 24000 |
| NKI7/12 | 14 | NK10/12 | 10 | 7 | 10 | 17 | 12 | 0.3 | 1.5 | 3.64 | 4.08 | 22400 |
| NKI7/16 | 18 | NK10/16 | 13 | 7 | 10 | 17 | 16 | 0.3 | 2 | 4.36 | 5.16 | 22400 |
| NKI9/12 | 18 | NK12/12 | 13 | 9 | 12 | 19 | 12 | 0.3 | 1.5 | 4 | 4.88 | 20800 |
| NKI9/16 | 22 | NK12/16 | 16 | 9 | 12 | 19 | 16 | 0.3 | 2 | 7.2 | 8.8 | 20800 |
| NKI10/16 | 30 | NK14/16 | 21 | 10 | 14 | 22 | 16 | 0.3 | 0.5 | 8.24 | 9.2 | 19200 |
| NKI10/20 | 38 | NK14/20 | 26 | 10 | 14 | 22 | 20 | 0.3 | 0.5 | 10.4 | 12.48 | 19200 |
| NK15/16 | 22 | 15 | 23 | 16 | 0.3 | 8.72 | 10.16 | 18400 | ||||
| NK15/20 | 27 | 15 | 23 | 20 | 0.3 | 11.04 | 13.76 | 18400 | ||||
| NKI12/16 | 33 | NK16/16 | 22 | 12 | 16 | 24 | 16 | 0.3 | 0.5 | 9.76 | 11.92 | 18400 |
| NKI12/20 | 42 | NK16/20 | 28 | 12 | 16 | 24 | 20 | 0.3 | 0.5 | 11.68 | 15.04 | 18400 |
| NK17/16 | 24 | 17 | 25 | 16 | 0.3 | 9.68 | 12 | 17600 | ||||
| NK17/20 | 30 | 17 | 25 | 20 | 0.3 | 12.32 | 16.32 | 17600 | ||||
| NK18/16 | 25 | 18 | 26 | 16 | 0.3 | 10.16 | 12.96 | 16800 | ||||
| NK18/20 | 31 | 18 | 26 | 20 | 0.3 | 12.88 | 17.6 | 16800 | ||||
| NKI15/16 | 39 | NK19/16 | 26 | 15 | 19 | 27 | 16 | 0.3 | 0.5 | 10.64 | 13.92 | 16800 |
| NKI15/20 | 45 | NK19/20 | 32 | 15 | 19 | 27 | 20 | 0.3 | 0.5 | 12.8 | 17.76 | 16800 |
| NK20/16 | 27 | 20 | 28 | 16 | 0.3 | 10.56 | 14 | 16000 | ||||
| NK20/20 | 34 | 20 | 28 | 20 | 0.3 | 13.36 | 19.04 | 16000 | ||||
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