6308-2Z/C4HT
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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6308-2Z/C4HT Bearing Product Overview & Core Advantages
The 6308-2Z/C4HT is a single row deep groove ball bearing engineered for high reliability in demanding applications. This shielded bearing features a C4 radial internal clearance, making it exceptionally suited for applications with thermal expansion or where interference fits are used. Its robust construction from chrome steel ensures durability and a long service life. The primary advantage of this configuration is its ability to handle significant radial loads while offering protection from contamination, all within a compact and standardized dimension set.
6308-2Z/C4HT Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 6308 | Standard bearing series designation, indicating a metric, medium-duty deep groove ball bearing with a 40mm bore, 90mm OD, and 23mm width. |
| 2Z | Specifies that the bearing is equipped with non-contact steel shields on both sides. This provides effective protection against coarse contaminants while maintaining low friction and allowing for high-speed operation. |
| C4 | Indicates a greater than normal radial internal clearance. This is critical for applications involving significant temperature gradients, shaft expansion, or heavy interference fits, preventing premature failure due to excessive preload. |
| HT | Signifies that the bearing components are stabilized for high-temperature operation (up to 120°C), ensuring dimensional stability and retained hardness under thermal stress. |
6308-2Z/C4HT Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The single row deep groove raceway and high-quality chrome steel construction provide a high radial dynamic load rating of 915 lbf, making it capable of withstanding substantial loads in various industrial environments.
Contamination Resistance & Speed: The non-contact steel shields (2Z) effectively seal the bearing from dust and debris without generating significant friction, contributing to a high limiting speed of 7,500 rpm.
Thermal & Fit Adaptability: The C4 radial clearance is a key structural feature that accommodates thermal expansion and press fits, reducing the risk of binding and ensuring smooth, reliable operation under varying thermal conditions.
Precision & Durability: Manufactured to ABEC 1 | ISO P0 tolerance class, this bearing offers consistent performance and interchangeability. The high-temperature stabilization (HT) ensures the bearing maintains its structural integrity and performance across its specified temperature range of -30°C to 120°C.
6308-2Z/C4HT Bearing Typical Application Areas
The 6308-2Z/C4HT is ideally suited for a wide range of industrial machinery where reliability under thermal and load stress is paramount. Key application areas include:
- Electric Motors and Gearboxes
- Industrial Fans and Blowers
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Compressors
