71926 CD/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71926 CD/P4ADGA Bearing Product Overview & Core Advantages
The 71926 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high rigidity. Engineered to a P4A tolerance class, it is optimized to handle combined loads (simultaneous radial and axial loads) efficiently. Its universal matchable (SU) design allows two bearings to be paired in a back-to-back or face-to-face arrangement, providing excellent operational stability. This bearing is pre-lubricated and features an open design, making it ideal for high-speed spindles and other high-precision machinery where superior running accuracy is critical.
71926 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71926 | Bearing series and size designation (130mm bore, 180mm OD). |
| CD | Contact angle of 15° and optimized internal design for high stiffness. |
| P4A | High precision tolerance class, exceeding ABEC-7/ISO P4 standards, for minimal runout and vibration. |
| DGA | Universal matchable (SU) designation. Two bearings are selectively matched to a specific preload and axial clearance when mounted in a back-to-back (DB) or face-to-face (DF) arrangement. |
71926 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 15° contact angle and phenolic cage provides high rigidity, enabling the bearing to support significant combined loads and moment loads, especially when used in a matched set.
- Superior Precision and Speed: Manufactured to a P4A tolerance class with tight dimensional controls, this bearing ensures high running accuracy. The lightweight phenolic cage contributes to lower centrifugal forces, supporting a high limiting speed of 7,500 rpm.
- Optimized Internal Geometry: With 27 precision balls of 15.875 mm diameter, the bearing is engineered for smooth operation and reduced heat generation under high-speed conditions.
- Universal Matching Capability: The Universal Matchable (SU) feature simplifies installation and ensures optimal preload and system stiffness in paired mounting configurations, enhancing overall machine performance.
71926 CD/P4ADGA Bearing Typical Application Areas
The 71926 CD/P4ADGA is ideally suited for high-performance applications where precision and speed are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines, high-frequency motor spindles.
- Robotics: High-accuracy rotary joints and arms.
- Medical Equipment: Dental handpieces, imaging scanner rotors.
- Aerospace: Gyroscopes, navigation system components.
