Product Overview: The 7718 Angular Contact Ball Bearing
The 7718 bearing is a high-precision, single-row Angular Contact Ball Bearing designed to accommodate both radial and axial loads simultaneously. A key characteristic of this bearing type is its contact angle, which allows it to sustain significant axial loads in one direction. For this reason, single-row angular contact bearings are typically mounted in pairs—either back-to-back, face-to-face, or in tandem—to handle axial forces in both directions and provide a rigid bearing arrangement.
As a specialized component within our 7000 Series, the 7718 is engineered for applications demanding high rotational speeds and exceptional running accuracy. Its internal design makes it an excellent choice for machinery where precision and system rigidity are critical for performance. Manufactured from high-quality bearing steel, it ensures reliability and a long service life even under demanding operational conditions.
Key Features of the 7718 Bearing
- Combined Load Capability: Engineered to support both radial and axial loads, making it versatile for complex loading scenarios.
- High-Speed Performance: The internal geometry is optimized for high rotational speeds with low heat generation.
- Single-Row Design: Features one row of balls with a specific contact angle for high axial load capacity in one direction.
- High Rigidity: Provides excellent system stiffness, which is essential for precision applications like machine tool spindles.
- Precision Manufacturing: Produced to stringent tolerances to ensure high running accuracy and consistent performance.
- Durable Construction: Made from premium-grade bearing steel for superior strength, wear resistance, and operational longevity.
Common Applications
- Machine Tool Spindles: Widely used in lathes, milling machines, and grinders where precision and rigidity are paramount.
- High-Speed Pumps and Compressors: Ideal for supporting rotating shafts in industrial pumps and compressors that operate at high speeds.
- Electric Motors and Generators: Provides reliable support in high-performance electric motors requiring precise shaft positioning.
- Industrial Gearboxes: Ensures smooth and accurate gear meshing by maintaining shaft alignment under combined loads.
- Robotics and Automation: Used in robotic arms and other automated systems that require precise and rigid rotational movement.
- Centrifuges and Separators: Suitable for high-speed rotating equipment in processing and laboratory environments.
- Printing Machinery: Supports rollers and cylinders, contributing to consistent and high-quality printing results.
Benefits of Using the 7718 Bearing
- Enhanced Rotational Accuracy: The high precision of the bearing minimizes shaft runout, improving the accuracy of the overall machine.
- Increased System Rigidity: When mounted in pairs, these bearings offer a very stiff support, reducing deflection under load.
- Optimal High-Speed Operation: Its design allows for smooth performance at high speeds, enhancing machine productivity.
- Improved Reliability: The robust construction and ability to handle complex loads reduce the risk of premature failure, leading to less downtime.
- Extended Service Life: High-quality materials and design contribute to a longer operational lifespan, reducing maintenance costs.
- Versatile Load Support: The ability to manage combined loads simplifies design in many types of machinery.
