Classification of Single Row Cylindrical Roller Bearings

Single row cylindrical roller bearings are widely used in various industries for their ability to support high radial loads. These bearings are classified into different types based on their design and features. In this essay, we will discuss the classification of single row cylindrical roller bearings.

1. N and NU Types:
The N type of cylindrical roller bearings has no flanges on the outer ring, while the inner ring has flanges on both sides. This design allows for axial displacement of the shaft in both directions relative to the bearing housing. On the other hand, the NU type has flanges on both sides of the outer ring and no flanges on the inner ring. Similar to the N type, it also allows for axial displacement of the shaft in both directions. Therefore, these types of bearings are suitable for use as floating end bearings.

2. NJ and NF Types:
The NJ type of cylindrical roller bearings has flanges on both sides of the outer ring and a single flange on one side of the inner ring. It can withstand a certain amount of unidirectional axial load. In contrast, the NF type has a single flange on one side of the outer ring and flanges on both sides of the inner ring. It can also withstand a certain amount of unidirectional axial load. Therefore, these types of bearings are suitable for use as single-directional axial positioning bearings.

3. NUP and NFP Types:
The NUP type of cylindrical roller bearings has flanges on both sides of the outer ring, a single fixed flange on one side of the inner ring, and a separable flat flange on the other side. It can withstand a certain amount of bidirectional axial load. Similarly, the NFP type has a single fixed flange on one side of the outer ring and a separable flat flange on the other side, with flanges on both sides of the inner ring. It can also withstand a certain amount of bidirectional axial load. These types of bearings can limit the axial displacement of the shaft relative to the bearing housing in both directions. Therefore, they are suitable for use as fixed end bearings.

4. NH (NJ+HJ) Type:
The NH type of cylindrical roller bearings is a combination of the NJ type bearing and the HJ type inclined flange. The NUP type bearing has a shorter inner ring, and the use of a separable flat flange is not convenient. The NH type bearing allows for a closer fit between the entire inner ring of the NJ type bearing and the shaft. Additionally, the NH type bearing is easier to install and dismantle. Similar to the NUP and NFP types, the NH type can limit the axial displacement of the shaft relative to the bearing housing in both directions. Therefore, it is suitable for use as a fixed end bearing.

In conclusion, single row cylindrical roller bearings are classified into various types based on their design and features. Each type offers specific advantages and is suitable for different applications. Proper selection of the bearing type is crucial to ensure optimal performance and longevity in various industrial applications.

If you want to learn more about single-row cylindrical roller bearings, feel free to contact us. At Lasting Bearing Group Co., Limited, we provide 24-hour online consulting services. We offer high-quality SDVV brand bearings with excellent cost performance. Additionally, we can also supply internationally renowned brands such as SKF, FAG, and NSK. Please don't hesitate to reach out to us at any time. We look forward to hearing from you.