71828 ACD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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71828 ACD/P4DGC Bearing Product Overview & Core Advantages
The 71828 ACD/P4DGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Operating under a P4 tolerance class, this bearing is engineered to handle combined loads efficiently, supporting significant radial and axial forces simultaneously. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs to optimize performance. Preloaded to a Moderate / Class C level, it ensures minimal axial play and high system stiffness right from installation, making it ideal for high-precision, high-reliability machinery.
71828 ACD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle, optimized for carrying combined loads. |
| P4 | Indicates a high-precision tolerance class, ensuring tight dimensional and running accuracy. |
| DGC | Specifies a phenolic cage material, contributing to lower weight, smoother operation at high speeds, and compatibility with various lubrication regimes. |
71828 ACD/P4DGC Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The bearing's angular contact design and Moderate preload (Class C) provide superior axial and radial stiffness, enabling it to withstand substantial combined loads without significant deflection. With a dynamic load rating of 15,502 lbf and a static load rating of 26,550 lbf, it offers reliable performance in demanding conditions.
High-Speed Performance: The lightweight phenolic cage (DGC) reduces centrifugal forces, allowing for a high limiting speed of 11,000 rpm. The optimized internal geometry and 25° contact angle further enhance its suitability for high-speed applications.
Precision and Durability: Manufactured to P4 tolerance standards with tight bore and outside diameter tolerances, this bearing ensures precise shaft positioning and smooth operation. The use of chrome steel for both rings and balls guarantees high durability and long service life.
71828 ACD/P4DGC Bearing Typical Application Areas
The 71828 ACD/P4DGC is ideally suited for high-performance applications where precision and speed are critical. Common uses include:
- Machine Tool Spindles
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Robotic Arms and Precision Automation Equipment
- Medical and Laboratory Instrumentation
