S71915 CD/P4ADT
Sealed Super Precision Angular Contact Ball Bearings
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S71915 CD/P4ADT Bearing Product Overview & Core Advantages
The S71915 CD/P4ADT is a precision duplex tandem angular contact ball bearing designed for high-performance applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing features a 15° contact angle and is supplied as a pre-loaded matched set of two bearings, enabling it to handle significant combined radial and axial loads simultaneously. Its compact design, sealed construction, and phenolic cage make it ideal for high-speed spindles and other precision machinery demanding superior running accuracy and long-term reliability.
S71915 CD/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S71915 | Precision angular contact ball bearing series with 75mm bore, 105mm OD |
| CD | Duplex arrangement in tandem configuration (DT) for increased axial load capacity in one direction |
| P4A | High precision tolerance class with enhanced running accuracy requirements |
| Sealed | Integrated sealing for contamination protection and lubricant retention |
S71915 CD/P4ADT Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The duplex tandem arrangement creates a highly rigid bearing system capable of withstanding heavy combined loads. The matched set with preload eliminates axial play, ensuring precise shaft positioning and vibration-free operation.
High-Speed Performance: The phenolic resin cage provides excellent strength-to-weight ratio, reducing centrifugal forces and enabling operation at limiting speeds up to 28,000 rpm. The optimized 15° contact angle balances radial and axial load capacity while maintaining high-speed capability.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional control (bore tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
Maintenance-Free Operation: The integrated sealing and factory-applied grease lubrication provide long-term protection against contamination and ensure reliable performance throughout the bearing's service life.
S71915 CD/P4ADT Bearing Typical Application Areas
- Machine tool spindles for milling, grinding, and turning centers
- High-speed machining centers requiring precision and rigidity
- Precision rotary tables and indexing heads
- Industrial pumps and compressors
- Medical equipment spindles and dental handpieces
- Robotic arm joints and precision automation systems
