71813 CDGC/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71813 CDGC/P4 Bearing Product Overview & Core Advantages
The 71813 CDGC/P4 is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with a 15° contact angle and Moderate (Class C) preload, it is engineered to handle combined loads—simultaneously supporting significant radial and axial loads in one direction. Its P4 tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The phenolic cage and universal matching (SU) designation further enhance its high-speed capability and installation versatility.
71813 CDGC/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71813 | Basic bearing designation, indicating a metric, single-row angular contact ball bearing with a 65mm bore, 85mm OD, and 10mm width. |
| CD | Specifies a 15° contact angle. |
| GC | Indicates a Moderate preload (Class C) for enhanced rigidity and reduced deflection under load. |
| P4 | Denotes a high-precision tolerance class with extremely tight dimensional and running accuracy limits. |
71813 CDGC/P4 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and Class C preload work in tandem to provide superior system stiffness, effectively resisting operational deflection. This allows the bearing to reliably support the specified radial dynamic load rating of 3038 lbf and static load rating of 3285 lbf.
- Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 36,000 rpm. The standard lubrication is suitable for this demanding operational range.
- Precision Engineering: Manufactured to P4 tolerance standards, this bearing guarantees minimal runout and vibration, which is critical for achieving high surface finishes and positional accuracy in precision equipment.
- Universal Matching (SU): This bearing is universally matchable, meaning it can be mounted in any combination (back-to-back, face-to-face, or tandem) with other SU-coded bearings without requiring selective assembly, simplifying procurement and installation.
71813 CDGC/P4 Bearing Typical Application Areas
The 71813 CDGC/P4 is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Robotics: Articulated arms and precision joints requiring high rigidity.
- Aerospace & Defense: Gyroscopes, navigation systems, and other critical instrumentation.
