71914 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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71914 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71914 CD/P4ADBC 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 is preloaded to Moderate / Class C standards, ensuring minimal axial and radial play under operating conditions. Its primary advantage lies in its ability to handle combined loads efficiently, making it an ideal choice for high-precision, high-rigidity systems where positional accuracy is critical.
71914 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing designation, indicating a metric series angular contact ball bearing. |
| C | Specifies a 15° contact angle, optimized for carrying combined radial and axial loads. |
| D | Indicates the bearing is part of a duplex pair. |
| P4A | Denotes a high-precision tolerance class, exceeding standard ABEC 7/ISO P4 levels for superior running accuracy. |
| DB | Specifies the Back-to-Back mounting arrangement, which provides high moment rigidity and stability. |
| C (in P4ADBC) | Indicates a Moderate preload (Class C), which increases system stiffness and minimizes deflection. |
71914 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide, stable bearing spread that significantly increases resistance to moment loads and enhances overall system rigidity. The Moderate preload eliminates internal clearance, ensuring precise shaft positioning and reduced vibration.
Superior Load Capacity: With a 15° contact angle and a dynamic load rating of 12,578 lbf, this bearing is engineered to handle significant combined radial and axial loads simultaneously, making it suitable for applications with complex loading conditions.
Precision & High-Speed Capability: Manufactured to a P4A tolerance class, it guarantees exceptional running accuracy. The phenolic resin cage is lightweight and robust, contributing to smooth operation and enabling high rotational speeds up to 24,000 rpm. The bearings are pre-lubricated for immediate operation.
Material Quality: Constructed from chrome steel for both rings and balls, the bearing offers high durability, wear resistance, and a long operational lifespan under demanding conditions.
71914 CD/P4ADBC Bearing Typical Application Areas
This high-precision duplex bearing set is ideally suited for applications requiring extreme accuracy and rigidity, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Where low noise and high positional accuracy are critical.
- High-Frequency Spindles: Used in PCB drilling and precision engraving.
- Industrial Pumps and Compressors: For stable operation under combined loads.
- Robotic Arm Joints and Precision Rotary Axes: Demanding high rigidity and repeatability.
