71914 CD/P4ADBB
71900 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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71914 CD/P4ADBB Bearing Product Overview & Core Advantages
The 71914 CD/P4ADBB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement provides superior stability and moment load capacity. As a P4A tolerance class bearing, it guarantees extremely tight dimensional and running accuracy, making it ideal for high-speed spindles and precision machinery. Its light preload (Class B) ensures optimal stiffness and minimizes deflection under operational loads, delivering reliable performance in critical applications.
71914 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation |
| C | 15° contact angle |
| D | Duplex Back-to-Back (DB) arrangement |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DBB | Universal matching designation for duplex pairs |
71914 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a wide effective spread between load centers, significantly increasing moment stiffness and enabling the bearing to handle combined radial and axial loads simultaneously. This arrangement provides exceptional operational stability.
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures minimal runout and vibration. The phenolic resin cage offers excellent dimensional stability and reduced friction at high speeds up to 24,000 rpm.
Optimized Material Selection: Constructed from chrome steel for both rings and balls, the bearing delivers high fatigue resistance and durability. The 15° contact angle provides an optimal balance between radial and axial load capacity for precision applications.
Preloaded Performance: The light preload (Class B) eliminates internal clearance, ensuring precise shaft positioning and enhanced system rigidity while maintaining smooth operation at high rotational speeds.
71914 CD/P4ADBB Bearing Typical Application Areas
This high-precision duplex bearing is specifically engineered for applications requiring exceptional accuracy and rigidity:
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Robotics - Robot arm joints and rotary tables
- Medical Equipment - Dental handpieces, CT scanner gantries
- Aerospace Systems - Gyroscopes, navigation instruments
- High-Frequency Spindles - PCB drilling and precision machining
