Product Overview: The 7218 Angular Contact Ball Bearing
The 7218 bearing is a high-precision, single-row angular contact ball bearing designed to support combined (axial and radial) loads. With key dimensions of 90mm bore diameter, 160mm outer diameter, and 30mm thickness, this component is engineered for applications requiring high rotational accuracy and speed. As a member of our 7200 Series, the 7218 is characterized by a contact angle that allows it to sustain significant axial loads in one direction alongside radial loads.
These bearings are typically mounted in pairs (e.g., back-to-back or face-to-face) to handle axial loads in both directions and create a rigid bearing arrangement. Manufactured from high-quality bearing steel, the 7218 ensures durability and reliable performance under demanding conditions. It is a fundamental component in our extensive lineup of Angular Contact Ball Bearings, trusted by industries for its precision and longevity.
Features of the 7218 Bearing
- Combined Load Support: Designed to accommodate both radial and high axial loads in a single direction, making it versatile for complex applications.
- High-Speed Capability: The internal geometry is optimized for high rotational speeds with minimal friction and heat generation.
- Single-Row Design: Features a single row of balls with raceways offset in the axial direction, creating the characteristic contact angle.
- Precision Engineering: Manufactured to tight tolerances to ensure high running accuracy and system rigidity.
- Paired Mounting Versatility: Can be used in duplex pairs (back-to-back, face-to-face, or tandem) to handle complex load scenarios and increase stiffness.
- Durable Construction: Made from premium-grade, through-hardened bearing steel for excellent wear resistance and extended service life.
Common Applications
- Machine Tool Spindles: Essential for lathes, milling machines, and grinders where precision and rigidity are critical for machining accuracy.
- Industrial Pumps & Compressors: Provides reliable support for rotating shafts, handling the high speeds and combined loads common in these machines.
- Gearboxes and Transmissions: Used to support shafts and gears, ensuring smooth power transmission and operational stability.
- High-Speed Electric Motors: Supports motor shafts, allowing for efficient operation at high RPMs with enhanced reliability.
- Centrifuges and Separators: Ideal for applications involving high rotational forces and the need for stable shaft support.
- Robotics and Automation: Employed in robotic arms and precision actuators to ensure accurate and repeatable movements.
- Printing Machinery: Supports rollers and rotating components, contributing to consistent and high-quality printing results.
Benefits of Using the 7218 Bearing
- Enhanced System Rigidity: When mounted in pairs, these bearings provide a very stiff support, minimizing shaft deflection and improving overall machine accuracy.
- Improved Operational Precision: The high running accuracy of the 7218 bearing contributes to the precision of the entire mechanical system.
- Longer Service Life: High-quality materials and design reduce wear and extend the operational life of both the bearing and the machinery.
- Increased Load Capacity: Offers a higher axial load capacity compared to a deep groove ball bearing of the same size.
- Reduced Maintenance Requirements: Its robust design and reliable performance lead to less frequent maintenance and reduced downtime.
- Optimal High-Speed Performance: Low-friction characteristics allow for efficient and cool operation even at high rotational speeds.
