71814 CDGB/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71814 CDGB/P4 Bearing Product Overview & Core Advantages
The 71814 CDGB/P4 is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 tolerance class, this bearing is engineered to handle combined loads with high rigidity. Its single-row design with a 15° contact angle and Universal Matchable (SU) designation allows for precise axial preload adjustment when mounted in pairs, making it ideal for high-precision spindles and other critical machinery requiring superior running accuracy and stability.
71814 CDGB/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71814 | Basic bearing designation indicating a super-precision, single-row angular contact ball bearing with a 70mm bore, 90mm OD, and 10mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high rigidity. |
| DG | Indicates a Universal Matchable (SU) bearing. Two such bearings can be universally matched in any combination to achieve specific preload levels. |
| B | Denotes a Light preload / Class B, providing optimal stiffness and minimal deflection under operational loads. |
| /P4 | Specifies the tolerance class P4, representing extremely tight dimensional and running accuracy tolerances for high-precision applications. |
71814 CDGB/P4 Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage and optimized internal geometry, including a 15° contact angle, contribute to stable operation at high rotational speeds, with a limiting speed of 28,000 rpm. The cage design ensures low friction and excellent guidance of the 31 high-precision chrome steel balls.
High Rigidity and Load Capacity: The bearing is designed to provide high rigidity against moment loads. With a radial dynamic load rating of 3105 lbf and a radial static load rating of 3600 lbf, it reliably handles combined radial and axial loads.
Precision and Accuracy: Manufactured to ABEC 7 / ISO P4 standards, the bearing features extremely tight tolerances on bore, outside diameter, and width, ensuring minimal runout and superior positional accuracy in the assembly.
Universal Matching: The Universal Matchable (SU) feature allows any two 71814 CDGB bearings to be mounted together as a pre-set pair (DB or DF arrangement) without selective matching, simplifying installation and ensuring consistent performance.
71814 CDGB/P4 Bearing Typical Application Areas
The 71814 CDGB/P4 is ideally suited for high-precision, high-speed applications across various industries, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instruments: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors and Spindles: Applications requiring minimal vibration and high running accuracy.
- Robotics: High-precision joints and rotary actuators.
