71803 CD/P4DGB
71800 Series Super Precision Angular Contact Ball Bearings
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71803 CD/P4DGB Bearing Product Overview & Core Advantages
The 71803 CD/P4DGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a light preload (Class B) configuration, it enables simplified mounting in pairs to handle combined radial and axial loads from both directions. Manufactured to P4 tolerance class, it delivers superior running accuracy, making it ideal for high-speed spindles and other precision machinery requiring minimal runout and vibration.
71803 CD/P4DGB Bearing Model Code Explained, Specifications & Naming Convention
| 71803 | Basic designation indicating a metric, ultra-light series bearing with 17mm bore, 26mm OD, and 10mm width. |
| CD | Contact angle designation (15°) and indicates a universal matchable pair configuration. |
| P4 | Tolerance class designation, signifying high precision with tight dimensional and running accuracy tolerances. |
| DGB | Indicates a universal matchable (SU) bearing pair supplied with a light preload (Class B). |
71803 CD/P4DGB Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4 tolerance class with a 15° contact angle, this bearing provides exceptional running accuracy and system stiffness, crucial for minimizing deflection under load.
Optimized for Combined Loads: The angular contact design efficiently supports combined radial and axial loads. The universal matchable (SU) feature allows two bearings to be mounted in any arrangement (back-to-back, face-to-face, or tandem) to handle bidirectional axial loads and moments.
High-Speed Capability: The lightweight phenolic resin cage and optimized internal geometry contribute to a high limiting speed of 103,000 rpm, reducing centrifugal forces and heat generation.
Ready-to-Install Performance: Supplied pre-lubricated and with a light preload, the bearing is ready for immediate installation, ensuring consistent performance and simplifying the assembly process.
71803 CD/P4DGB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines.
- High-Speed Drives: Servo motors, high-frequency spindles, and robotics.
- Medical Equipment: Dental handpieces, laboratory centrifuges, and imaging systems.
