Product Details
Description:
Because of no inner ring, this needle roller bearing is suitable for parts of which the radial size is limited.The surface of shaft journal fitted with it is acted directly as rolling surface. It is requested that the surface hardness of shaft journal be no less than HRC60 and the surface roughness Ra value, no more than 0.63um.This kind of bearing does not limit the axial shift of shaft and housing
The outer ring and inner ring have no shoulder. For this purpose, inner ring, outer ring, complete set of needles and cage can be mounted respectively. This bearing does not limit the axial shift of shaft and outer housing. Since the cage separates the needles so as to reduce friction. It can be used for the parts with high rotational speed.
| 轴径 | 轴承型号 | 外 型 尺 寸 | 基本额定负荷 | 极限转速1) |
| FW D C | E | D1 | d2 | D2 | rS | 动 | 静 | n1 oil≈ |
| C | Co |
| mm |
| mm | min. | N | min-1 |
| 6 | NAO 6X17X10 TN | 13 | 10.3 | 12.7 | 13.3 | 0.3 | 4750 | 5500 | 29000 |
| 9 | NAO | 18 | 12.3 | 17.6 | 18.3 | 0.3 | 10000 | 9900 | 26000 |
| 9X22 X12 TN |
| 12 | NAO 12X24X13 | 20 | 16.4 | 19.6 | 20.3 | 0.3 | 8900 | 11800 | 24000 |
| NAO 12X24X20 | 20 | 16.4 | 19.6 | 20.3 | 0.3 | 13300 | 19800 | 24000 |
| NAO 12X28X12 | 22 | 16.4 | 21.6 | 22.3 | 0.3 | 10 | 12500 | 23000 |
| 15 | NAO 15X28X13 | 24 | 20.4 | 23.6 | 24.3 | 0.3 | 9800 | 14300 | 21000 |
| NAO 15X32X12 | 26 | 20.4 | 25.6 | 26.5 | 0.3 | 13400 | 16200 | 21000 |
| 17 | NAO 17X30X13 | 26 | 22.4 | 25.6 | 26.3 | 0.3 | 10400 | 15900 | 20000 |
| NAO 17X35X16 | 29 | 22.4 | 28.4 | 29.5 | 0.3 | 20000 | 25500 | 19000 |
| 20 | NAO 20X35X17 | 29 | 25.6 | 28.4 | 29.5 | 0.3 | 14900 | 26000 | 18000 |
| NAO 20X37X16 | 32 | 25.6 | 31.4 | 32.5 | 0.3 | 21000 | 28000 | 17000 |
| 接上表 |
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| 25 | NAO 25X40X17 | 35 | 30.6 | 34.4 | 35.5 | 0.3 | 19600 | 34000 | 0 |
| NAO 25X42X16 | 37 | 30.6 | 36.4 | 37.5 | 0.3 | 23100 | 33500 | 0 |
| 0NAO 25X42X32 | 37 | 30.6 | 36.4 | 37.5 | 0.3 | 39500 | 37000 | 0 |
| 30 | NAO 30X45X13 | 40 | 35.6 | 39.4 | 40.5 | 0.3 | 16200 | 28000 | 13000 |
| NAO 30X45X17 | 40 | 35.6 | 39.4 | 40.5 | 0.3 | 20800 | 38500 | 13000 |
| 0NAO 30X45X26 | 40 | 35.6 | 39.4 | 40.5 | 0.3 | 27500 | 56000 | 13000 |
| NAO 30X47X16 | 42 | 35.6 | 41.4 | 42.5 | 0.3 | 24400 | 37500 | 13000 |
| NAO 30X47X18 | 42 | 35.6 | 41.4 | 42.5 | 0.3 | 27500 | 43000 | 13000 |
| NAO 30X52X18 | 44 | 37.6 | 43.4 | 44.5 | 0.3 | 28000 | 45500 | 12000 |
| 35 | NAO 35X50X17 | 45 | 40.6 | 44.4 | 45.5 | 0.3 | 21400 | 40 | 12000 |
| NAO 35X55X20 | 47 | 40.6 | 46.2 | 47.5 | 0.3 | 32500 | 57000 | 11000 |
| *NAO 35X57X20.5 | 50 | 42.6 | 49.2 | 50.5 | 0.3 | 36000 | 59000 | 11000 |
| 40 | NAO 40X55X17 | 50 | 45.69 | 49.2 | 50.5 | 0.3 | 22500 | 46000 | 10000 |
| NAO 40X65X20 | 58 | 50.6 | 57.2 | 58.5 | 0.3 | 35500 | 62000 | 9000 |
| 50 | NAO 50X68X20 | 60 | 55.8 | 59.2 | 60.8 | 0.6 | 28500 | 66000 | 8500 |
| NAO 50X78X20 | 68 | 60.8 | 67.2 | 68.8 | 1 | 43500 | 85000 | 7500 |
| 70 | NAO 70X100X30 | 88 | 81 | 87.2 | 89 | 1 | 72000 | 179000 | 6000 |
