6318-Z/HC5C3
6000 Series HC5/HC5C3 Hybrid Ceramic Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
6318-Z/HC5C3 Bearing Product Overview & Core Advantages
The 6318-Z/HC5C3 is a single row deep groove ball bearing engineered for high-performance applications requiring exceptional reliability. This precision bearing is distinguished by its hybrid ceramic construction, utilizing Silicon Nitride (Si3N4) balls for superior performance. Its core advantages include the ability to handle high radial loads and moderate axial loads in both directions, making it an ideal choice for demanding operational environments. The combination of a shielded design and a C3 radial internal clearance ensures robust performance under varying thermal and load conditions, providing a compact and highly reliable solution for industrial machinery.
Model Code Breakdown
- 6318: Basic model number denoting a single row deep groove ball bearing with a 90mm bore and 190mm outside diameter.
- -Z: Signifies a shielded (non-contact) configuration on one side, providing protection against contaminant ingress while minimizing friction.
- /HC5: Indicates a Hybrid Ceramic construction, specifically that the rolling elements are Silicon Nitride (Si3N4) ceramic balls.
- C3: Denotes a greater than normal radial internal clearance, suitable for applications with significant thermal expansion or where interference fits are used.
6318-Z/HC5C3 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The use of Silicon Nitride balls with a chrome steel ring and cage offers significant advantages, including reduced weight, higher limiting speed (3,600 rpm), and superior resistance to wear and electrical erosion compared to all-steel bearings.
High Load Capacity: With a dynamic load rating of 32,148 lbf and a static load rating of 24,055 lbf, this bearing is built to withstand substantial radial loads, ensuring long-term operational durability.
Optimized Internal Clearance: The C3 radial clearance allows for thermal expansion and interference fits, preventing premature failure due to excessive preload in high-temperature or high-speed applications.
Shielded Protection: The single-sided shield helps retain lubrication and excludes larger contaminants, contributing to extended service life without the added friction of contact seals.
6318-Z/HC5C3 Bearing Typical Application Areas
The 6318-Z/HC5C3 is ideally suited for advanced industrial applications where high speed, reliability, and precision are paramount. Key sectors include:
- Electric Motors & Generators: Especially where electrical insulation or higher speeds are required.
- High-Speed Spindles in machine tools and precision machining centers.
- Pumps and Compressors operating at elevated speeds.
- Aerospace and Automotive auxiliary systems requiring lightweight, high-performance components.
