7222 ACD/P4ADBC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7222 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7222 ACD/P4ADBC is a duplex back-to-back (DB) matched pair of precision angular contact ball bearings, designed for applications demanding exceptional rotational accuracy and high rigidity. This P4A tolerance class bearing is pre-lubricated and features a moderate preload (Class C), making it ideally suited for machine tool spindles and other high-performance machinery where managing combined loads (radial and axial) and maintaining precise shaft positioning are critical. Its matched set configuration ensures optimal performance and simplifies installation.
7222 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7222 | Basic bearing series and size designation. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex Back-to-Back (DB) matched arrangement. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DBC | Specific designation for a pre-set moderate preload (Class C) in a DB configuration. |
7222 ACD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and provides exceptional stability. This configuration allows the bearing set to handle significant combined radial and axial loads from both directions.
Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic cage, this bearing ensures minimal vibration and smooth operation at high speeds, with a limiting speed of 16,250 rpm. The 25° contact angle is optimized for high axial load capacity.
Optimized for Performance: The bearings are supplied as a matched set of 2 with a pre-applied lubricant, ensuring consistent performance and immediate readiness for installation in demanding applications.
7222 ACD/P4ADBC Bearing Typical Application Areas
The 7222 ACD/P4ADBC is engineered for high-precision, high-rigidity applications, including:
- Machine Tool Spindles (CNC machining centers, grinding spindles)
- High-frequency Precision Spindles
- Industrial Pumps and Compressors
- Robotic Arm Rotary Joints
- Other precision machinery requiring superior rotational accuracy and stiffness.
