7220 ACD/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7220 ACD/P4A Bearing Product Overview & Core Advantages
The 7220 ACD/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and exceptional performance under combined loads. Its primary advantage lies in its ability to support significant radial loads and unidirectional axial loads simultaneously, making it an ideal choice for high-speed, high-rigidity applications. Manufactured to a P4 (ABEC-7) tolerance class, this bearing ensures superior running accuracy and rotational stability. The optimized 25° contact angle provides an excellent balance between axial load capacity and speed capability, while the phenolic cage contributes to smooth operation at the limiting speed of 11,000 rpm.
7220 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7220 | Basic bearing series, indicating a 100 mm bore, 180 mm OD, and 34 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies a high-capacity internal design, typically involving larger or more balls. |
| P4 | Indicates a high-precision tolerance class (equivalent to ABEC-7). |
| A | Denotes that the bearing is supplied with a specific preload for immediate use in matched arrangements. |
7220 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The optimized internal geometry, including a 25.4 mm ball diameter and 15 balls, provides high stiffness and enables high dynamic (33,300 lbf) and static (29,025 lbf) load ratings, effectively handling combined radial and axial forces.
- High-Speed Performance: The lightweight phenolic resin cage ensures dimensional stability and low friction at high speeds, supporting the limiting speed of 11,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, guaranteeing exceptional running accuracy and minimal vibration.
- Material Integrity: Constructed from chrome steel for both rings and balls, offering high hardness, wear resistance, and a long operational life within a temperature range of -30°C to 110°C.
7220 ACD/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
