71815 CD/P4DFA
71800 Series Super Precision Angular Contact Ball Bearings
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71815 CD/P4DFA Bearing Product Overview & Core Advantages
The 71815 CD/P4DFA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This P4 tolerance class bearing features a face-to-face (DF) matched arrangement, providing superior stability and the ability to accommodate combined radial and axial loads. With its extra light preload (Class A) and phenolic cage, it is engineered for high-speed operation and smooth performance in demanding precision machinery.
71815 CD/P4DFA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71815 | Basic bearing designation indicating a 75mm bore, 95mm OD, and 20mm width |
| C | 15° contact angle design for optimal load distribution |
| D | Duplex bearing pair configuration |
| P4 | High precision tolerance class for exceptional running accuracy |
| DF | Face-to-face mounting arrangement for increased moment stiffness |
| A | Extra light preload classification for minimal friction at high speeds |
71815 CD/P4DFA Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex face-to-face arrangement creates a rigid bearing system that effectively resists moment loads while maintaining P4-level precision. This configuration ensures stable shaft positioning even under demanding operating conditions.
Optimized Load Capacity: With a 15° contact angle and 33 chrome steel balls, this bearing efficiently handles combined radial and axial loads. The radial dynamic load rating of 5152 lbf and static rating of 7650 lbf provide reliable performance in various loading scenarios.
Superior High-Speed Performance: The phenolic cage and extra light preload enable smooth operation at limiting speeds up to 22,000 rpm. The lightweight construction minimizes centrifugal forces, reducing heat generation and maintaining precision at high rotational velocities.
Precision Engineering: Manufactured to tight dimensional tolerances (bore/OD: -0.004mm to 0) with chrome steel rings and balls, this bearing delivers consistent performance and long service life in precision applications.
71815 CD/P4DFA Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Gearboxes - Industrial transmission systems requiring high accuracy
- High-Speed Motors - Electric motors and servo drives operating at elevated speeds
- Medical Equipment - Dental handpieces and surgical tool drives
- Aerospace Components - Guidance systems and auxiliary power units
- Robotics - Precision joints and articulation points in automated systems
