7214 ACDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7214 ACDGC/P4A Bearing Product Overview & Core Advantages
The 7214 ACDGC/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with a 25° contact angle and Moderate (Class C) preload, it is engineered to support combined loads (radial and axial) simultaneously. Its P4A tolerance class ensures ultra-precise running characteristics, making it ideal for high-speed spindles and other high-rigidity applications where minimal runout and superior performance are critical.
7214 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7214 | Basic bearing series, indicating a 70mm bore, 125mm OD, and 24mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| DGC | Designates a Universal Matchable (SU) bearing, allowing for precise preload control when mounted in sets. |
| P4A | Indicates an ultra-high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
7214 ACDGC/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The 25° contact angle and Moderate preload provide excellent resistance to deflection under combined loads, ensuring stable and precise shaft positioning.
High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 28,000 rpm. This makes it suitable for demanding high-speed applications.
Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for achieving superior surface finishes and machining accuracy.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be mounted in sets (back-to-back, face-to-face, or tandem) to create a matched arrangement that meets specific application requirements for preload and stiffness.
7214 ACDGC/P4A Bearing Typical Application Areas
The 7214 ACDGC/P4A is ideally suited for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Aerospace and Defense Positioning Systems
