6205-2Z/C3W64
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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6205-2Z/C3W64 Bearing Product Overview & Core Advantages
The 6205-2Z/C3W64 is a single row deep groove ball bearing engineered for robust performance and long-term reliability. This shielded bearing is designed to primarily handle radial loads and is pre-lubricated with Solid Oil for maintenance-free operation. Its key advantages include a high limiting speed of 13,000 rpm, a generous C3 radial internal clearance suitable for applications with thermal expansion, and compliance with ROHS and REACH environmental standards. This combination makes it an excellent choice for demanding industrial applications requiring a durable, pre-lubricated bearing.
Model Code Breakdown
| Model Segment | Technical Meaning | Benefit |
|---|---|---|
| 6205 | Standard designation for a single row deep groove ball bearing with a 25 mm bore. | Defines the basic bearing type and dimensions. |
| 2Z | Bearing is equipped with shields on both sides. | Provides effective contaminant protection while allowing higher speeds than contact seals. |
| C3 | Specifies a radial internal clearance greater than the Normal (CN) group. | Accommodates thermal expansion in the shaft or housing, preventing preload and overheating. |
| W64 | Designates that the bearing is lubricated with Solid Oil. | Ensures maintenance-free operation, eliminates lubricant leakage, and is suitable for a wide temperature range. |
6205-2Z/C3W64 Bearing Structural Features & Performance Benefits
The performance of the 6205-2Z/C3W64 bearing is a direct result of its specific construction:
- Deep Groove Raceway & Single Row Design: This fundamental geometry is optimized for handling high radial loads and moderate axial loads in both directions, providing versatile load capacity.
- Shielded (2Z) Construction: The non-contact steel shields on both sides retain the Solid Oil lubricant and protect the internal components from large particulate contaminants, contributing to a long service life without the added friction of contact seals.
- C3 Radial Internal Clearance: This greater-than-normal clearance is a critical feature for applications where differential thermal expansion between the bearing and its housing/shaft occurs. It prevents undesirable preload, which can lead to increased friction, heat generation, and premature failure.
- Solid Oil (W64) Lubrication: The bearing is filled with a polymer matrix saturated with oil. This design offers superior lubrication retention, is immune to leakage, and performs reliably across the specified temperature range of -30°C to 120°C.
- High-Grade Materials: Manufactured from chrome steel for rings, balls, and cage, ensuring high strength, durability, and consistent performance under load.
6205-2Z/C3W64 Bearing Typical Application Areas
The 6205-2Z/C3W64 is a versatile component suited for a wide range of industrial machinery where reliability and minimal maintenance are key. Common applications include:
- Electric Motors and Gearboxes
- Industrial Fans and Blowers
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Compressors
Its combination of contaminant protection, maintenance-free lubrication, and C3 clearance makes it particularly well-suited for applications that are difficult to re-lubricate or that operate in environments with significant temperature fluctuations.
