The NU313 ECJ is a specific type of cylindrical roller bearing. Here’s a breakdown of its key features and specifications:
1. Bearing Type:
- NU313: This indicates that it is a cylindrical roller bearing with no ribs on the outer ring and two ribs on the inner ring. The “NU” design allows the inner ring to be separable from the outer ring and the roller cage assembly, which is useful for certain mounting and dismounting applications.
2. Dimensions:
- The “313” in the bearing designation refers to its size according to ISO standards.
- Dyamèt enteryè (D): 65 manm
- Dyamèt eksteryè (D): 140 manm
- Lajè (B): 33 manm
3. ECJ Designation:
- ECJ: This stands for “Enhanced Capacity Journal” or “Enhanced Capacity Joint.” It typically refers to a bearing with an optimized internal design, such as a larger number of rollers or a modified roller profile, to increase the load-carrying capacity and improve performance.
4. Load Ratings:
- Dynamic Load Rating (C): This is the load that the bearing can withstand for a certain number of revolutions before fatigue occurs. For NU313 ECJ, this is typically around 170 kounm.
- Static Load Rating (C0): This is the maximum load the bearing can handle without permanent deformation. For NU313 ECJ, this is usually around 190 kounm.
5. Speed Ratings:
- The bearing is designed to operate at high speeds, with a limiting speed (depending on lubrication and cooling conditions) typically around 6000 rpm for oil lubrication and slightly lower for grease lubrication.
6. Applications:
- Cylindrical roller bearings like the NU313 ECJ are commonly used in applications where high radial loads are present, such as in:
- Electric motors
- Gearboxes
- Industrial machinery
- Pumps
- Compressors
7. Materyèl:
- The bearing is usually made from high-quality bearing steel, such as SAE 52100, which is heat-treated for durability and wear resistance.
8. Lubrication:
- The bearing can be lubricated with grease or oil, depending on the application requirements. Proper lubrication is crucial for maximizing the bearing’s lifespan and performance.
9. Cage:
- The cage, which holds the rollers in place, is typically made from steel or brass, depending on the specific variant and application requirements.
10. Mounting and Maintenance:
- The NU313 ECJ bearing is designed for easy mounting and dismounting, especially in applications where the inner ring needs to be mounted separately from the outer ring.
- Regular maintenance, including proper lubrication and monitoring for wear, is essential to ensure long service life.
Summary:
The NU313 ECJ cylindrical roller bearing is a high-capacity, high-performance bearing designed for applications with significant radial loads. Its enhanced design allows for greater load-carrying capacity and improved operational efficiency, making it suitable for a wide range of industrial applications.
