71913 CD/P4AQBCC
71900 Series Super Precision Angular Contact Ball Bearings
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71913 CD/P4AQBCC Bearing Product Overview & Core Advantages
The 71913 CD/P4AQBCC is a high-precision quadruplex angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. This matched set arrangement of four bearings in a back-to-back configuration provides superior stability when handling combined loads including radial and bidirectional axial forces. Manufactured to P4A tolerance class, this bearing delivers exceptional running accuracy and is preloaded to moderate Class C specifications for optimal performance in demanding industrial environments.
71913 CD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
| 71913 | Basic bearing designation with 65mm bore diameter |
| CD | Contact angle of 15° for optimal load distribution |
| P4A | High precision tolerance class with enhanced dimensional stability |
| QBCC | Quadruplex Back-to-Back arrangement with moderate preload (Class C) |
71913 CD/P4AQBCC Bearing Structural Features & Performance Benefits
Enhanced Rigidity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of withstanding heavy combined loads and moments. This arrangement significantly increases system stability and reduces deflection under load.
Superior Load Capacity: With a radial dynamic load rating of 12,150 lbf and radial static load rating of 15,075 lbf, this bearing set delivers exceptional performance in applications requiring high load-carrying capacity. The 15° contact angle optimizes load distribution between radial and axial components.
Precision Performance: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures minimal runout and vibration. The phenolic cage material provides excellent dimensional stability and reduced friction at high speeds.
Optimized Design: Featuring 26 chrome steel balls with 7.938mm diameter, this bearing maintains precise ball guidance and smooth operation. The pre-lubricated design ensures immediate operational readiness with a temperature range of -30°C to 110°C.
71913 CD/P4AQBCC Bearing Typical Application Areas
- Machine tool spindles requiring high precision and rigidity
- High-speed machining centers with demanding accuracy requirements
- Precision grinding equipment where minimal vibration is critical
- Industrial robotics and automation systems
- Aerospace positioning systems requiring exceptional accuracy
- Medical equipment with high precision rotational requirements
- Test and measurement equipment requiring stable rotational characteristics
