71926 CDGA/P4A
71900 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
71926 CDGA/P4A Bearing Product Overview & Core Advantages
The 71926 CDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional rotational accuracy. Manufactured to P4A tolerance class, this bearing is designed to handle significant combined loads (radial and axial) simultaneously, with a 15° contact angle optimized for high-speed operation. Its extra light preload (Class A) minimizes deflection and ensures smooth, precise rotation, making it ideal for high-rigidity spindles and other critical machinery components.
71926 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71926 | Basic bearing series and size designation | Defines the core dimensions: 130mm bore, 180mm OD, 24mm width. |
| C | 15° Contact Angle | Optimized for high-speed performance and moderate axial load capacity. |
| DG | Universal Matchable (SU) bearing in a Duplex arrangement | This single bearing is ground to be universally matched with others in a set (typically a 3-bearing set) to achieve precise preload and rigidity. |
| A | Extra Light Preload (Class A) | Provides minimal internal clearance for high precision and reduced runout at high speeds. |
| P4A | Tolerance Class | Denotes ultra-precision tolerances on bore, OD, and width for superior running accuracy. |
71926 CDGA/P4A Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4A tolerance standards with extremely tight dimensional control on the bore, outside diameter, and width. This ensures exceptional running accuracy and minimal vibration.
Optimized for High-Speed Operation: The 15° contact angle and lightweight phenolic cage work in concert to reduce centrifugal forces and friction, enabling a high limiting speed of 7,500 rpm. The open seal type minimizes drag for maximum speed capability.
Superior Rigidity and Load Capacity: The extra light preload eliminates internal clearance, resulting in a very stiff bearing assembly that resists deflection under load. With a dynamic load rating of 20,768 lbf and a static load rating of 24,300 lbf, it reliably handles demanding combined loads.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be precisely paired with other bearings from the same manufacturing lot to form a pre-loaded duplex set, simplifying assembly and ensuring optimal system performance.
71926 CDGA/P4A Bearing Typical Application Areas
The 71926 CDGA/P4A is specified for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and optical scanners.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and navigation systems.
