6305 ETN9/C4
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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6305 ETN9/C4 Bearing Product Overview & Core Advantages
The 6305 ETN9/C4 is a single row deep groove ball bearing engineered for high-performance industrial applications. This precision bearing is characterized by its open design and enhanced radial internal clearance (C4), making it exceptionally suitable for applications with thermal expansion or where precise shaft positioning is critical. Its robust construction from chrome steel ensures high durability and reliable operation under significant radial loads. The inclusion of a nylon cage (TN9) contributes to lower friction, enabling higher operational speeds and quieter running, positioning it as an ideal component for demanding, high-speed machinery.
Model Code Breakdown
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 63 | Medium Duty Series | Optimized balance between load capacity and cross-section. |
| 05 | Bore Diameter: 25 mm | Standard shaft size compatibility. |
| E | Reinforced Design | Increased radial dynamic load rating for greater service life. |
| TN9 | Nylon Cage, Glass Fiber Reinforced | Enables high-speed operation, reduced weight, and excellent acceleration characteristics. |
| C4 | Radial Internal Clearance greater than Normal | Accommodates thermal expansion in applications with high operating temperatures or interference fits. |
6305 ETN9/C4 Bearing Structural Features & Performance Benefits
- High Load Capacity: The single row deep groove raceway and reinforced (E-design) construction provide a high radial dynamic load rating of 5845 lbf, ensuring reliability in demanding applications.
- Optimized for High Speeds: The lightweight nylon TN9 cage minimizes centrifugal forces and friction, allowing for a limiting speed of 16,000 rpm. This makes it a superior choice for high-speed spindles and motors.
- Precision & Stability: Manufactured to ABEC 1 | ISO P0 tolerance class, this bearing guarantees consistent running accuracy. The C4 radial clearance provides operational stability in environments prone to thermal fluctuations.
- Material Integrity: Components made from high-grade chrome steel offer excellent resistance to wear and fatigue, supporting a long operational lifespan even under continuous radial loads.
- Application Flexibility: The open seal type allows for custom lubrication regimes, while the wide operating temperature range (-30°C to 120°C) ensures performance across diverse industrial environments.
6305 ETN9/C4 Bearing Typical Application Areas
The 6305 ETN9/C4 is designed for high-performance machinery where speed, precision, and reliability are paramount. Key application sectors include:
- Electric Motors & Generators: Ideal for main shafts in high-RPM industrial motors.
- Pumps & Compressors: Provides reliable support for impeller shafts handling significant radial forces.
- Material Handling Equipment: Used in conveyor rollers and pulley systems requiring durable bearing components.
- Agricultural Machinery: Suitable for drivetrains and auxiliary systems demanding robust performance.
- Industrial Gearboxes: Supports shafts in gearboxes operating at high speeds.
