71808 CD/P4
71800 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71808 CD/P4 Bearing Product Overview & Core Advantages
The 71808 CD/P4 is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. As a P4 (ABEC-7) tolerance class bearing, it is designed to handle significant combined loads, accommodating both radial and axial loads in one direction. Its compact design, with a 7 mm width, makes it ideal for space-constrained, high-performance assemblies. The bearing is preloaded and pre-lubricated, ensuring immediate operational readiness, high rigidity, and exceptional rotational accuracy.
71808 CD/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71808 | Basic bearing series and size designation (40mm bore, 52mm OD). |
| CD | Indicates a specific contact angle (15°) and internal design optimized for high rigidity and precise operation. |
| P4 | Denotes the tolerance class, equivalent to ABEC-7, signifying very high dimensional and running accuracy. |
71808 CD/P4 Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The angular contact design with a 15° contact angle and preload provides high system rigidity, minimizes deflection under load, and ensures exceptional running accuracy, which is critical for high-speed applications.
Optimized for High Speeds: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 38,000 rpm. This makes it an excellent high-speed bearing.
Superior Load Capacity: Engineered to support combined loads, it offers a dynamic load rating of 1098 lbf and a static load rating of 1102 lbf, providing reliable performance in demanding conditions.
Premium Materials: Constructed from chrome steel for both rings and balls, the bearing ensures high durability, wear resistance, and a long operational life.
71808 CD/P4 Bearing Typical Application Areas
The 71808 CD/P4 is ideally suited for high-precision and high-speed machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Equipment
- Aerospace Instrumentation
