208-Z
With Filling Slots Deep Groove Bearings
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Basic Information
Main Dimensions
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Materials
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208-Z Bearing Product Overview & Core Advantages
The 208-Z is a single row deep groove ball bearing designed for robust performance in a wide range of industrial applications. Engineered with metric dimensions and manufactured to P0 tolerance class, this bearing offers a reliable solution for handling primarily radial loads. Its compact design, featuring a shielded (Z-type) construction on one side, helps protect against contamination while the pre-lubricated design ensures immediate operation and reduces maintenance needs. This combination makes the 208-Z an excellent choice for applications demanding high reliability and consistent performance.
208-Z Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Code | Technical Meaning |
|---|---|---|
| Basic Designation | 208 | Indicates a standard single row deep groove ball bearing with a 40mm bore, 80mm outside diameter, and 18mm width. |
| Suffix | -Z | Denotes a shielded construction on one side. The shield (Z-type) is a non-contact metal plate that protects the bearing interior from large particulate contaminants while minimizing friction. |
Note: The absence of additional suffixes indicates standard features including CN radial internal clearance, P0 tolerance class, and grease lubrication.
208-Z Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The single row deep groove raceway geometry is precision-engineered to efficiently carry significant radial loads (Dynamic: 7554 lbf, Static: 6070 lbf), making it suitable for a variety of demanding conditions.
- Contamination Protection: The shielded (Z) design provides a critical defense against dust and debris, enhancing bearing life and reliability in less-than-ideal environments without a significant impact on the limiting speed of 9,500 rpm.
- High-Speed Suitability: The combination of a lightweight nylon cage and optimized grease lubrication allows for smooth operation at high rotational speeds, reducing vibration and heat generation.
- Reduced Maintenance: Being pre-lubricated and shielded, the bearing is effectively maintenance-free for its entire service life in many applications, lowering total cost of ownership.
- Material Integrity: Constructed from chrome steel for both rings and balls, the bearing provides high hardness, wear resistance, and a long operational lifespan under standard temperature ranges (-30°C to 120°C).
208-Z Bearing Typical Application Areas
The 208-Z bearing is versatile and finds use across numerous industries and equipment types, including:
- Electric Motors and small to medium-sized Gearboxes
- Industrial Fans and Blowers
- Material Handling Equipment such as conveyor rollers
- Agricultural Machinery
- Automotive Components like alternators and idler pulleys
