S71911 ACDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S71911 ACDGB/P4A Bearing Product Overview & Core Advantages
The S71911 ACDGB/P4A is a precision angular contact ball bearing designed for applications requiring exceptional accuracy and reliability. This single-row bearing features a 25° contact angle and Light Preload (Class B), making it ideally suited for high-speed operation while providing excellent rigidity. Its P4A tolerance class ensures superior running accuracy, and as a Universal Matchable (SU) bearing, it can be flexibly mounted in various preload configurations. The sealed design with grease lubrication offers long-term, maintenance-free performance across a wide temperature range.
S71911 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | High-precision bearing series |
| 1911 | Dimension series (55mm bore, 80mm OD, 13mm width) |
| ACD | 25° contact angle design |
| GB | Light preload (Class B) |
| P4A | High precision tolerance class |
S71911 ACDGB/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage and optimized internal geometry enable stable operation at limiting speeds up to 34,000 rpm, making it an excellent high-speed bearing solution.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration.
Enhanced Rigidity: The 25° contact angle and light preload provide superior stiffness while maintaining optimal high-speed performance characteristics.
Maintenance-Free Operation: The sealed design with factory-applied grease lubrication protects against contamination and ensures reliable performance across the temperature range of -30°C to 110°C.
Load Capacity: With dynamic load rating of 4095 lbf and static load rating of 3082 lbf, this bearing handles significant combined radial and axial loads effectively.
S71911 ACDGB/P4A Bearing Typical Application Areas
The S71911 ACDGB/P4A is ideally suited for precision applications including:
- Machine tool spindles and high-precision machining centers
- High-speed motors and precision gearboxes
- Industrial pumps and compressors
- Precision instruments and measuring equipment
- Robotics and automation systems requiring high accuracy
