KOYO Combined Needle Roller Bearings – Metric Nominal Dimensions.
Various part numbers in stock, welcome inquiry. Fast shipment within 2-3 working days.


| Load Ratings | |||||||
| Bearing Designation | Radial | Fatigue Load Limits | Approx. | Matching Inner ring Designation | Shaft | ||
| Dynamic | Static | Cu | Wt. | Diameter | |||
| C | C0 | Radial | Thrust | ||||
| kN | kN | kg | mm | ||||
| lbf | in | ||||||
| NAXK10 | 7.9 | 8.7 | 1.35 | 0.63 | 0.04 | JR7x10x16 | 10 |
| 1780 | 1960 | 0.394 | |||||
| NAXK10Z | 7.9 | 8.7 | 1.35 | 0.63 | 0.04 | JR7x10x16 | |
| 1780 | 1960 | ||||||
| NAXK12 | 7.5 | 8.5 | 1.3 | 0.69 | 0.046 | JR9x12x16 | 12 |
| 1690 | 1910 | 0.472 | |||||
| NAXK12Z | 7.5 | 8.5 | 1.3 | 0.69 | 0.047 | JR9x12x16 | |
| 1690 | 1910 | ||||||
| NAXK15 | 9.7 | 12.6 | 1.9 | 0.76 | 0.047 | JR12x15x16 | 15 |
| 2180 | 2830 | 0.591 | |||||
| NAXK15Z | 9.7 | 12.6 | 1.9 | 0.76 | 0.05 | JR12x15x16 | |
| 2180 | 2830 | ||||||
| NAXK17 | 11.4 | 16.1 | 2.5 | 0.88 | 0.06 | JR14x17x17 | 17 |
| 2560 | 3620 | 0.669 | |||||
| NAXK17Z | 11.4 | 16.1 | 2.5 | 0.88 | 0.064 | JR14x17x17 | |
| 2560 | 3620 | ||||||
| NAXK20 | 14.8 | 23.7 | 3.65 | 1.2 | 0.089 | JR17x20x20 | 20 |
| 3330 | 5330 | 0.787 | |||||
| NAXK20Z | 14.8 | 23.7 | 3.65 | 1.2 | 0.094 | JR17x20x20 | |
| 3330 | 5330 | ||||||
| NAXK25 | 18.9 | 29.8 | 4.6 | 1.6 | 0.134 | JR20x25x20 | 25 |
| 4250 | 6700 | 0.984 | |||||
| NAXK25Z | 18.9 | 29.8 | 4.6 | 1.6 | 0.141 | JR20x25x20 | |
| 4250 | 6700 | ||||||
| NAXK30 | 20.3 | 34.6 | 5.35 | 2.15 | 0.146 | JR25x30x20 | 30 |
| 4560 | 7780 | 1.181 | |||||
| NAXK30Z | 20.3 | 34.6 | 5.35 | 2.15 | 0.154 | JR25x30x20 | |
| 4560 | 7780 | ||||||
| NAXK35 | 22.1 | 40.8 | 6.35 | 2.1 | 0.176 | JR30x35x20 | 35 |
| 4970 | 9170 | 1.378 | |||||
| NAXK35Z | 22.1 | 40.8 | 6.35 | 2.1 | 0.184 | JR30x35x20 | |
| 4970 | 9170 | ||||||
| NAXK40 | 23.9 | 47 | 7.3 | 2.85 | 0.224 | JR35x40x20 | 40 |
| 5370 | 10600 | 1.575 | |||||
| NAXK40Z | 23.9 | 47 | 7.3 | 2.85 | 0.233 | JR35x40x20 | |
| 5370 | 10600 | ||||||
| NAXK45 | 25 | 51.8 | 8.05 | 3.1 | 0.262 | JR40x45x20 | 45 |
| 5620 | 11600 | 1.772 | |||||
| NAXK45Z | 25 | 51.8 | 8.05 | 3.1 | 0.275 | JR40x45x20 | |
| 5620 | 11600 | ||||||
WHCD Bearing Co.,Ltd is professional bearing supplier, engaged in bearing business with more than eighteen years, export to worldwide countries, as America, European, Middle-East, Southeast Asia …etc. with plenty long-term cooperation customers. WHCD Bearing company will provide professional and prompt solution for customers.Original Quality and Warranted, and Bearing experts team support customer service. Various bearing types for customer choose:



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