| After-sales Service: | Yes |
|---|---|
| Warranty: | 6months |
| Certification: | CE |
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Needle roller bearings are equipped with thin and long rollers (the length of the rollers is 3~10 times of the diameter, and the diameter is generally not more than 5mm), so the radial structure is compact. When the inner diameter and load capacity are the same as those of other types of bearings, the outer diameter is the smallest, which is especially suitable for bearing results with limited radial installation size. According to different application occasions, bearings without inner rings or needle roller and cage assemblies can be selected. At this time, the journal surface and shell hole surface matched with the bearings are directly used as the inner and outer rolling surfaces of the bearings. In order to ensure the same load capacity and running performance as the bearing with rings, the hardness, machining accuracy and surface quality of the raceway surface of the shaft or shell hole should be similar to that of the bearing ring. This kind of bearing can only bear radial load.
Its function should be support, but this is only a part of its function. The essence of support is to be able to bear radial load. It can also be understood that it is used to fix the shaft. It is to fix the shaft so that it can only rotate and control its axial and radial movement. 
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