71926 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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71926 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71926 CD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back arrangement is preloaded to Moderate (Class C) specifications, delivering superior system stability and resistance to complex combined loads. Manufactured to P4A tolerance class, it offers extremely tight dimensional control for high-precision machinery. Its open design, when properly lubricated, supports high-speed operation while the phenolic cage ensures smooth performance.
71926 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71926 | Basic bearing designation indicating the size series and 130 mm bore diameter. |
| CD | Indicates a duplex bearing in a Back-to-Back (DB) arrangement. |
| P4A | Specifies the high-precision tolerance class, exceeding ABEC 7/ISO P4 standards, with enhanced running accuracy. |
| DBC | Denotes a pre-selected matched set of two bearings with a specific preload (Moderate / Class C). |
71926 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The back-to-back duplex configuration creates a wide effective spread, significantly increasing moment stiffness and providing exceptional resistance to overturning moments, which is critical for high-rigidity applications.
Superior Load Capacity: With a 15° contact angle and duplex design, this bearing efficiently handles combined radial and axial loads from both directions simultaneously. The high dynamic and static load ratings ensure long service life under heavy loads.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, minimizes friction, and allows for a high limiting speed. The open design facilitates efficient lubrication management for thermal control.
Precision Engineering: The P4A tolerance class guarantees minimal runout and precise rotational accuracy. The bearings are supplied as a pre-matched set, ensuring optimal preload and performance without the need for on-site adjustment.
71926 CD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Gearboxes: Especially in industrial robotics and high-performance automotive transmissions.
- High-Frequency Motors and Spindles: Applications demanding low vibration and high rotational accuracy.
- Medical and Laboratory Equipment: Such as centrifuges and advanced imaging systems.
- Aerospace Actuation Systems: Where reliability and precision under complex loading are paramount.
