71826 CDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71826 CDGA/HCP4 Bearing Product Overview & Core Advantages
The 71826 CDGA/HCP4 is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional performance. Operating under a P4 tolerance class, it is designed to handle predominantly axial loads in one direction, as well as combined loads. Its core advantages stem from its extra light preload (Class A), which minimizes deflection under high speeds, and its ceramic ball construction that reduces centrifugal forces, enabling superior high-speed capabilities with a limiting speed of 11,000 rpm. This bearing is universally matchable, allowing for precise axial play adjustment when mounted with other bearings.
71826 CDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71826 | Basic bearing designation (130mm bore, 165mm OD) | Defines the core dimensions and series. |
| CD | 15° Contact Angle | Optimized for high-speed operation and moderate axial load capacity. |
| GA | Extra Light Preload (Class A) | Enhances rigidity and rotational accuracy while minimizing friction and heat generation. |
| HCP4 | P4 Tolerance Class, Universal Matchable (SU) | Guarantees extremely tight dimensional and running accuracy. The "SU" designation means it can be universally paired with other bearings for precise preload setting. |
71826 CDGA/HCP4 Bearing Structural Features & Performance Benefits
High-Speed & Rigidity: The combination of a 15° contact angle and an extra light preload provides excellent rigidity for precise shaft positioning while allowing for very high rotational speeds. The use of ceramic balls significantly reduces mass, lowering centrifugal forces and enabling a higher limiting speed.
Precision & Load Handling: Manufactured to P4 tolerance standards, this bearing ensures minimal runout and vibration, which is critical for high-precision applications. It is designed to handle combined loads effectively, with a high dynamic and static load rating for its compact cross-section.
Thermal & Material Advantages: The phenolic resin cage offers high strength with low weight and excellent performance under high centrifugal forces. The open seal type allows for customized lubrication schemes to optimize performance for specific operating conditions within the temperature range of -30°C to 110°C.
71826 CDGA/HCP4 Bearing Typical Application Areas
The 71826 CDGA/HCP4 is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Instrumentation: In medical devices, optical scanners, and coordinate measuring machines.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and other critical rotating assemblies.
- High-Frequency Motors: Supporting spindles in applications requiring extreme rotational accuracy.
