S71924 ACD/P4AQGA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S71924 ACD/P4AQGA Bearing Product Overview & Core Advantages
The S71924 ACD/P4AQGA is a precision double-row angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This high-rigidity bearing is designed to simultaneously handle combined loads (radial and bidirectional axial loads) efficiently. Its P4A tolerance class ensures superior running accuracy, while the universal matchable (SU) design allows for flexible mounting arrangements in preloaded sets. The sealed construction with pre-lubrication provides long-term, maintenance-free operation, making it ideal for high-speed precision machinery.
S71924 ACD/P4AQGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| ACD | 25° contact angle, double-row design | Optimized for combined radial and axial loads |
| P4A | High precision tolerance class | Superior running accuracy and positioning precision |
| QGA | Sealed construction with grease lubrication | Contamination protection and maintenance-free operation |
S71924 ACD/P4AQGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double-row angular contact design with 25° contact angle provides exceptional stiffness and enables the bearing to handle significant combined loads and bidirectional axial forces simultaneously. With a radial dynamic load rating of 43,875 lbf and static rating of 77,625 lbf, it offers robust performance in demanding applications.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional tolerances (bore: -0.004mm to 0, OD: -0.004mm to 0), this bearing ensures minimal runout and vibration for precision applications.
High-Speed Capability: The phenolic cage and optimized internal geometry contribute to excellent high-speed performance, with a limiting speed of 11,000 rpm. The 25° contact angle further enhances high-speed stability.
Maintenance-Free Operation: The sealed design with factory-applied grease lubrication provides long service life without requiring relubrication, operating effectively within a temperature range of -30°C to 110°C.
S71924 ACD/P4AQGA Bearing Typical Application Areas
- Machine tool spindles and high-precision machining centers
- High-speed spindles for grinding and milling applications
- Precision instrumentation and measuring equipment
- Industrial pumps and compressors requiring high accuracy
- Robotics and automation systems
- Aerospace components and navigation systems
