S71917 CD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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S71917 CD/P4ADGB Bearing Product Overview & Core Advantages
The S71917 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universally matchable (SU) bearing supplied in a pre-loaded pair, it delivers superior performance in handling combined radial and axial loads. Manufactured to P4A tolerance class, it offers extremely tight dimensional control for high-precision spindle arrangements. Its sealed design and phenolic cage contribute to high-speed capability and long-term operational stability, making it an ideal choice for demanding industrial environments.
S71917 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| S71917 | Basic bearing designation | Defines core dimensions: 85mm bore, 120mm OD, 36mm width |
| CD | 15° contact angle, universal matchable design | Optimized for combined loads and flexible mounting arrangements |
| P4A | High precision tolerance class | Superior running accuracy and dimensional stability |
| DGB | Duplex pair, back-to-back arrangement, light preload | Enhanced rigidity and precise axial positioning |
S71917 CD/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back arrangement with light preload (Class B) creates a highly rigid bearing system capable of handling significant combined radial and axial loads. The 15° contact angle is optimized for applications requiring both radial support and thrust capacity.
Precision Performance: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures exceptional running accuracy and minimal vibration. The precise bearing dimensions (85×120×36mm) guarantee consistent performance in precision assemblies.
High-Speed Capability: The phenolic cage material provides excellent strength-to-weight ratio, enabling operation at limiting speeds up to 17,000 rpm. This makes it suitable for high-speed spindle applications where dynamic stability is critical.
Sealed & Lubricated Design: The sealed construction with grease lubrication offers protection against contamination while maintaining optimal performance across a wide temperature range (-30°C to 110°C).
S71917 CD/P4ADGB Bearing Typical Application Areas
The S71917 CD/P4ADGB excels in applications requiring high precision and rigid support:
- Machine Tool Spindles: High-speed machining centers, grinding spindles
- Precision Instrumentation: Measuring equipment, optical systems
- Industrial Pumps & Compressors: High-speed rotary equipment
- Robotics & Automation: Precision rotary joints and positioning systems
- Aerospace Components: Auxiliary systems requiring high reliability
