6205 ETN9/C4
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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6205 ETN9/C4 Bearing Product Overview & Core Advantages
The 6205 ETN9/C4 is a single row deep groove ball bearing engineered for robust performance in demanding applications. Its core strength lies in its ability to efficiently handle radial loads while also accommodating moderate axial loads in both directions. Manufactured to ABEC 1 | ISO P0 tolerance standards, this bearing offers reliable precision. A key feature is its optimized internal geometry combined with a Nylon cage (ETN9), which contributes to smooth operation, lower noise levels, and suitability for high-speed applications up to 18,000 rpm. The specified C4 radial internal clearance makes it particularly well-suited for applications with elevated operational temperatures or where fits result in a reduction of internal clearance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 6205 | Standard bearing series designation indicating a medium-duty, single row deep groove ball bearing with a 25mm bore, 52mm OD, and 15mm width. |
| E | Optimized internal design, typically featuring reinforced shoulders and a larger ball complement for increased load capacity. |
| TN9 | Polyamide (Nylon) cage, glass fiber reinforced, centered on the balls. This design is lightweight, promotes quiet running, and is excellent for high-speed operation. |
| C4 | Specifies a radial internal clearance greater than normal (C0). This is selected for applications involving thermal expansion, interference fits, or where a higher operational temperature is expected. |
6205 ETN9/C4 Bearing Structural Features & Performance Benefits
- Enhanced Load Capacity: The "E"-type design incorporates a larger number of balls and optimized raceway geometry, significantly boosting the radial dynamic load rating (4002 lbf) and radial static load rating (2091 lbf) compared to standard 6205 bearings.
- High-Speed Capability: The lightweight and robust Nylon TN9 cage minimizes centrifugal forces and friction, enabling stable operation at the limiting speed of 18,000 rpm. This makes it a prime choice for applications requiring high rotational velocities.
- Thermal Stability: The C4 clearance is a critical feature that prevents pre-loading and potential seizure in applications where the bearing housing or shaft expands due to heat, ensuring consistent performance across its specified temperature range of -30°C to 120°C.
- Material Integrity: Constructed from high-carbon chrome steel for both rings and balls, the bearing provides excellent hardness, wear resistance, and long-term durability.
6205 ETN9/C4 Bearing Typical Application Areas
The 6205 ETN9/C4 is a versatile component selected for its balance of high-speed performance, increased load capacity, and thermal adaptability. Common applications include:
- Electric Motors and AC Motor Bearings
- Industrial Gearboxes and Power Transmission Systems
- Pumps and Compressors
- Agricultural Machinery
- Material Handling Equipment
