7224 ACD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7224 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7224 ACD/P4ADGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to a P4A tolerance class, it delivers superior running accuracy and dimensional stability. Its key advantage lies in its ability to handle combined loads, efficiently supporting significant radial loads and axial loads in one direction simultaneously. The universal matchable (SU) design allows for flexible mounting arrangements, while the phenolic cage and optimized contact angle of 25° contribute to its high-speed capabilities and smooth operation. This bearing is the ideal solution for high-precision, high-rigidity spindle systems.
7224 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7224 | Basic Bearing Series & Size | Denotes a 120mm bore, 215mm OD, 80mm width bearing. |
| AC | Angular Contact | Optimized geometry for combined radial and axial loads. |
| D | High Contact Angle (25°) | Provides higher axial load capacity. |
| P4A | Tolerance Class | Indicates ultra-precision dimensional and running accuracy. |
| DB | Universal Matchable (Back-to-Back) | Bearings are supplied as a pre-matched set for simplified mounting and optimal preload. |
| GA | Light Preload | Ensures high system rigidity and minimizes runout. |
7224 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design and 25° contact angle create a robust load path, enabling the bearing to handle high combined loads with exceptional stiffness. With a dynamic load rating of 69,075 lbf and a static load rating of 82,125 lbf, it is built for demanding applications.
High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the optimized internal geometry and high-grade chrome steel construction allow for a limiting speed of 10,000 rpm, making it a true high-speed bearing.
Precision & Stability: Manufactured to P4A tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, this bearing guarantees minimal runout and consistent performance in the most precise machinery.
Universal Matchability (SU): Supplied as a pre-selected pair, these bearings are universal matchable, simplifying installation and ensuring optimal preload and performance when mounted in a back-to-back (DB) arrangement.
7224 ACD/P4ADGA Bearing Typical Application Areas
The 7224 ACD/P4ADGA is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: For robotics, aerospace, and high-end automotive systems.
- High-Frequency Motors and Spindles: Where minimal vibration and high rotational accuracy are required.
- Medical Equipment: Centrifuges and advanced imaging systems.
- Printing and Paper Converting Machinery: High-speed rollers and cylinders.
