71807 CD/P4
71800 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71807 CD/P4 Bearing Product Overview & Core Advantages
The 71807 CD/P4 is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Its defining feature is the 15° contact angle, optimized to support significant combined loads—handling both radial forces and unidirectional axial loads simultaneously. Manufactured to P4 (ABEC-7) tolerance class, it delivers ultra-precise running characteristics, making it ideal for high-speed spindles and precision machinery where minimal runout and vibration are critical. The phenolic cage contributes to smooth operation at high speeds, while the preloaded configuration ensures consistent performance and high rigidity under demanding conditions.
71807 CD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71807 | Basic bearing designation, indicating a metric series angular contact ball bearing with a 35mm bore, 47mm OD, and 7mm width. |
| CD | Indicates a specific contact angle (15°) and internal design optimized for high rigidity and precise load handling. |
| P4 | Denotes the tolerance class, equivalent to ABEC-7. This signifies extremely tight dimensional and running accuracy for high-precision applications. |
71807 CD/P4 Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The bearing is supplied with a preload, which eliminates internal clearance. This significantly increases system stiffness, reduces deflection under load, and improves positional accuracy, which is vital for machine tool spindles.
- Superior Load Capacity: The 15° contact angle design enables efficient support of combined radial and axial loads in one direction. The high dynamic and static load ratings ensure long service life under demanding operating conditions.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction, enabling smooth operation up to the high limiting speed of 43,000 rpm. This makes it a true high-speed bearing.
- Precision Engineering: Manufactured to P4 precision class with tight bore, OD, and width tolerances, this bearing guarantees minimal vibration and superior running accuracy for critical applications.
71807 CD/P4 Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and drilling spindles.
- Precision Robotic Drives: Joint and arm actuators requiring high rigidity and responsiveness.
- High-Frequency Motors & Spindles: Motors for PCB drilling and small precision tools.
- Medical Equipment: High-speed rotors in dental handpieces and centrifuges.
- Aerospace Instrumentation: Gyroscopes and navigation system components.
