S7208 ACD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7208 ACD/P4A Bearing Product Overview & Core Advantages
The S7208 ACD/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rigidity. Designed to accommodate primarily axial loads in one direction, combined with moderate radial loads, it features a 25° contact angle for optimal load distribution. Manufactured to P4 (ABEC-7) tolerance class, it delivers exceptional running accuracy and is preloaded for enhanced stiffness and reduced system vibration. Its compact design and high-performance construction make it ideal for high-speed, high-reliability machinery.
S7208 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| ACD | Angular Contact Design, 25° Contact Angle | Optimized for handling high axial loads and providing high rigidity. |
| P4A | P4 (ABEC-7) Tolerance Class, Preloaded | Guarantees high precision and running accuracy. The "A" indicates a specific preload level for maximum system stiffness. |
S7208 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 25° contact angle, P4 tolerance, and factory-applied preload ensures maximum system stiffness, minimizes deflection under load, and provides exceptional rotational accuracy.
- Optimized Load Capacity: The angular contact design is specifically engineered to handle high axial loads in one direction simultaneously with radial loads, making it suitable for combined load applications.
- High-Speed Capability: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 16,000 rpm.
- Durability and Reliability: Constructed from high-grade chrome steel for both rings and balls, this bearing offers excellent fatigue life and wear resistance, ensuring long-term reliability in demanding conditions.
S7208 ACD/P4A Bearing Typical Application Areas
The S7208 ACD/P4A is ideally suited for high-performance applications where precision, speed, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Gearboxes
- High-Frequency Motors and Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Automation Equipment
