71815 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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71815 CD/P4DGB Bearing Product Overview & Core Advantages
The 71815 CD/P4DGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to P4 tolerance class, this bearing is universally matchable (SU), allowing two bearings to be mounted in any combination (face-to-face or back-to-back) to optimize rigidity and handle combined loads. Its compact design, with a 75 mm bore and 20 mm width, provides a high load capacity in a minimal space, making it ideal for high-precision, high-reliability machinery.
71815 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71815 | Basic bearing designation, indicating a metric, angular contact bearing with a 75 mm bore and 95 mm outside diameter. |
| CD | Indicates a 15° contact angle and that the bearing is part of a universally matchable (SU) pair. Two bearings can be mounted in any configuration. |
| P4 | Denotes a high-precision tolerance class, ensuring extremely tight dimensional and running accuracy for demanding applications. |
| DGB | Signifies a Light preload (Class B). This preload eliminates internal clearance, enhancing system rigidity and rotational accuracy. |
71815 CD/P4DGB Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design and universal matching capability enable the bearing to support significant combined radial and axial loads. The light preload ensures maximum system stiffness, critical for minimizing deflection under load.
High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, while the optimized internal geometry and 15° contact angle contribute to a high limiting speed of 22,000 rpm.
Precision and Durability: Manufactured from chrome steel for both rings and balls, and held to P4 precision tolerances, this bearing guarantees consistent performance, long service life, and low noise and vibration levels.
71815 CD/P4DGB Bearing Typical Application Areas
The 71815 CD/P4DGB is engineered for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Drives and Servo Motors
