71926 ACDGA/P4A
71900 Series Super Precision Angular Contact Ball Bearings
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71926 ACDGA/P4A Bearing Product Overview & Core Advantages
The 71926 ACDGA/P4A is a single-row angular contact ball bearing designed for ultra-high precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its key advantage lies in its ability to handle combined radial and axial loads simultaneously, making it an ideal choice for high-speed spindles and precision machinery where high rigidity and minimal runout are critical. The bearing is pre-lubricated and features a phenolic cage optimized for high-speed operation.
71926 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71926 | Basic bearing series and size designation |
| AC | Angular Contact design with a 25° contact angle |
| D | Two-piece phenolic (phenolic resin) cage |
| GA | Universal Matchable (SU) bearing, supplied in a set of 3 for preload adjustment |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4 standards |
71926 ACDGA/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerance class with extremely tight dimensional tolerances on bore, outside diameter, and width. This ensures minimal runout and superior positioning accuracy in demanding applications.
Optimized Load Capacity: The 25° contact angle is engineered to efficiently support significant combined radial and axial loads. With a dynamic load rating of 19,598 lbf and a static load rating of 22,950 lbf, it offers reliable performance under heavy loads.
Superior High-Speed Performance: The lightweight phenolic cage (D) reduces centrifugal forces and inertial drag, enabling a high limiting speed of 7,500 rpm. The open design facilitates efficient lubrication and heat dissipation.
Universal Matching Capability: Designated as Universal Matchable (SU) and supplied in sets of 3, these bearings can be arranged in tandem or back-to-back configurations to achieve specific preload and stiffness requirements, enhancing system versatility.
71926 ACDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring ultra-precision.
- Precision Grinding Spindles: Applications demanding extreme rotational accuracy and thermal stability.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Medical Equipment: High-speed rotors in dental handpieces and medical centrifuges.
- Aerospace Instrumentation: Gyroscopes and other navigation system components.
