이 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. 이 “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. 차원:
- 이 “313” in the bearing designation refers to its size according to ISO standards.
- Inner Diameter (d): 65 밀리미터
- Outer Diameter (D): 140 밀리미터
- Width (B): 33 밀리미터
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 kN.
- Static Load Rating (C0): This is the maximum load the bearing can handle without permanent deformation. For NU313 ECJ, this is usually around 190 kN.
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. Material:
- 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:
이 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.
