S71915 CD/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
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S71915 CD/P4ADBC Bearing Product Overview & Core Advantages
The S71915 CD/P4ADBC is a precision duplex pair angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined radial and axial loads from both directions. Manufactured to P4A tolerance class and preloaded for moderate stiffness, this bearing is engineered for high-performance applications where precision and reliability are paramount. Its compact design and phenolic cage contribute to its suitability for high-speed operation.
S71915 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Basic bearing designation (15mm bore 719 series) |
| C | 15° contact angle |
| D | Duplex pair bearing set |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DB | Back-to-back mounting arrangement |
| C | Moderate preload (Class C) |
S71915 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread between load centers, significantly increasing system rigidity and moment load capacity. This configuration provides excellent operational stability under complex loading conditions.
Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing effectively handles combined radial and axial loads from both directions simultaneously. The dynamic load rating of 13,162 lbf and static load rating of 16,875 lbf ensure reliable performance in demanding applications.
High-Speed Performance: The phenolic resin cage offers excellent strength-to-weight ratio, reduced friction, and superior guidance at high speeds. Combined with P4A precision tolerances and optimized internal design, this enables operation at limiting speeds up to 28,000 rpm.
Sealed & Lubricated Design: The sealed construction protects against contamination while the factory-applied grease lubrication provides long-term performance across a wide temperature range of -30°C to 110°C.
S71915 CD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and milling applications
- High-Speed Motors: Precision electric motors and servo drives requiring minimal runout
- Industrial Pumps & Compressors: Applications demanding high rotational accuracy and reliability
- Precision Instrumentation: Medical equipment, measuring devices, and optical systems
- Aerospace Components: Guidance systems, actuators, and other critical rotating assemblies
