7022 ACD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7022 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7022 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This P4A tolerance class bearing is supplied as a matched back-to-back (DB) pair, preloaded for immediate installation. Its core advantage lies in its ability to support combined loads (radial and axial) simultaneously from both directions, making it ideal for high-precision spindles and other machinery requiring high rigidity and dimensional stability under complex loading conditions.
7022 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7022 | Basic bearing series, indicating a 110 mm bore, 170 mm OD, and 56 mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (two single bearings) configuration. |
| DB | Matched arrangement: Back-to-Back. This arrangement provides high moment rigidity. |
| P4A | Precision Tolerance Class, specifying very tight dimensional and running accuracy tolerances. |
| A | Preload level: Extra Light (Class A). |
7022 ACD/P4ADBA 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 tilting. This configuration, combined with the 25° contact angle, provides excellent capability for handling combined radial and axial loads from both directions.
Precision & High-Speed Performance: As a P4A precision bearing, it guarantees minimal runout and smooth operation. The lightweight phenolic cage and optimized internal geometry contribute to stable performance at high rotational speeds, with a limiting speed of 10,000 rpm.
Material & Construction: Manufactured from high-grade chrome steel for both rings and balls, ensuring long service life and durability. The bearing is pre-lubricated for immediate use and operates within a temperature range of -30°C to 110°C.
7022 ACD/P4ADBA Bearing Typical Application Areas
The 7022 ACD/P4ADBA is engineered for high-performance applications where precision and rigidity are paramount. Typical uses include:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Precision Gearboxes
- Industrial Pumps and Compressors
- Precision Measuring Instruments
