6318-Z
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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6318-Z Bearing Product Overview & Core Advantages
The 6318-Z is a single row deep groove ball bearing designed for exceptional performance in demanding applications. Engineered to primarily handle radial loads, it also accommodates moderate axial loads in both directions. Its key advantages include high precision due to its P6 tolerance class, reliable operation at high speeds, and long service life facilitated by its integral shielded design and pre-lubrication. This bearing is an ideal choice for applications requiring high reliability and robust performance in a compact form factor.
6318-Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 6318 | Basic Bearing Number | Denotes a metric, single row deep groove ball bearing with a 90mm bore, 190mm OD, and 43mm width. |
| -Z | Shield Designation | Indicates the bearing is equipped with a non-contact shield on one side. This provides effective protection against contaminant ingress while minimizing friction, contributing to the bearing's high limiting speed. |
6318-Z Bearing Structural Features & Performance Benefits
Optimized Internal Geometry & High-Quality Materials: The deep groove raceway and high-grade chrome steel rings and balls are engineered for high radial dynamic load capacity (33,946 lbf) and long-term durability. The stainless steel cage ensures stability and reduced wear at high rotational speeds.
Precision & Rigidity: Manufactured to P6 tolerance class, this bearing offers superior running accuracy, reduced vibration, and consistent performance, which is critical for precision machinery. The standard CN radial internal clearance is suitable for a wide range of operating conditions.
Sealed & Lubricated for Life: The single-side shield (Z) protects the bearing interior from dust and other particulates. Pre-lubricated with grease, the bearing is ready for immediate installation and offers maintenance-free operation within its specified temperature range of -30°C to 120°C.
6318-Z Bearing Typical Application Areas
The 6318-Z is versatile and finds extensive use in various industrial sectors, including:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
