71826 ACDGA/P4
71800 Series Super Precision Angular Contact Ball Bearings
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71826 ACDGA/P4 Bearing Product Overview & Core Advantages
The 71826 ACDGA/P4 is a single-row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Positioned in the P4 tolerance class, it offers exceptionally tight dimensional tolerances for bore, outside diameter, and width, ensuring minimal runout and vibration. Its 25° contact angle is optimized to support significant combined loads (radial and axial), making it an ideal choice for high-speed spindles and precision machinery where rigidity and accuracy are paramount.
71826 ACDGA/P4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71826 | Basic bearing designation, indicating the size series and bore diameter (130 mm). |
| AC | Angular Contact design with a 25° contact angle. |
| DGA | Universal Matchable (SU) bearing, supplied in a set of three (Number of bearings in matched set: 3) for preload control when mounted in pairs. |
| P4 | Indicates a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
71826 ACDGA/P4 Bearing Structural Features & Performance Benefits
High-Precision Construction: Manufactured to P4 tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing guarantees exceptional dimensional stability and rotational accuracy, which is critical for high-speed applications.
Optimized Load Capacity: The 25° contact angle and robust construction using chrome steel rings and balls provide excellent capability to handle combined radial and axial loads. With a dynamic load rating of 8190 lbf and a static load rating of 11250 lbf, it ensures reliable performance under demanding conditions.
High-Speed Capability: The lightweight phenolic cage and precision-ground components contribute to a high limiting speed of 11,000 rpm, reducing centrifugal forces and enabling smooth operation at elevated speeds.
Universal Matching & Preload Flexibility: As a Universal Matchable (SU) bearing supplied in a set of three, it allows for precise preload adjustment (in this case, Extra light / Class A preload) when mounted in pairs (back-to-back or face-to-face), enhancing system rigidity and minimizing deflection.
71826 ACDGA/P4 Bearing Typical Application Areas
The 71826 ACDGA/P4 is ideally suited for high-precision, high-speed machinery where accuracy and rigidity are non-negotiable. Key application areas include:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Speed Precision Spindles for PCB drilling and routing
- Robotic Arm Joints and Precision Gearboxes
- Medical Equipment such as high-speed dental handpieces and imaging scanners
- Aerospace Actuation Systems and precision instrumentation
