6818zz
6800 Series Thin Section Bearings
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6818zz Bearing Product Overview & Core Advantages
The 6818zz is a single row deep groove ball bearing designed for reliable performance in a wide range of industrial applications. Its core advantages lie in its robust construction, featuring shielded (ZZ) protection on both sides to retain lubrication and exclude contaminants. Manufactured to ABEC-1 precision tolerances, this bearing offers a dependable balance of high radial load capacity and operational stability. Its compact cross-section and chrome steel components make it an excellent choice for applications demanding durability and consistent performance under radial loads.
6818zz Bearing Model Code Explained, Specifications & Naming Convention
| Prefix/Suffix | Interpretation | Technical Significance |
|---|---|---|
| 68 | Series Code | Indicates a deep groove ball bearing series with a specific dimensional relationship between bore and outside diameter. |
| 18 | Bore Diameter Code | Specifies a 90 mm bore diameter (18 x 5 = 90mm). |
| ZZ | Seal/Shield Type | Denotes shielded on both sides. These non-contact steel shields protect the internal components from large contaminants and help retain the pre-applied lubricant, enhancing bearing life with minimal friction increase. |
6818zz Bearing Structural Features & Performance Benefits
- Optimized for Radial Loads: The deep groove raceway and single row design are engineered to efficiently support high radial dynamic load ratings of 4118 lbf and radial static load ratings of 4388 lbf.
- Shielded Protection: The dual ZZ shields provide an effective barrier against dust and debris, making the bearing suitable for environments where contamination is a concern, thereby extending service intervals.
- Stainless Steel Cage: The stainless steel cage ensures high strength and corrosion resistance, contributing to stable operation and a long service life, even at the limiting speed of 6,200 rpm.
- Precision & Stability: Manufactured to ABEC-1 tolerance class with a standard C0 radial internal clearance (0.012mm to 0.036mm), this bearing delivers consistent running accuracy and smooth operation, minimizing vibration and noise.
6818zz Bearing Typical Application Areas
The 6818zz is a versatile component suited for various machinery and equipment, including:
- Electric Motors and Generators
- Industrial Gearboxes and Transmissions
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Fans
