7224 CD/P4QBCA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7224 CD/P4QBCA Bearing Product Overview & Core Advantages
The 7224 CD/P4QBCA is a precision angular contact ball bearing configured as a quadruplex back-to-back (QBC) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing arrangement delivers superior performance under combined radial and axial loads. Manufactured to P4 tolerance class with an extra light preload (Class A), it is optimized for high-speed operation and provides outstanding running accuracy, making it an ideal solution for high-precision spindles and other critical machinery components.
7224 CD/P4QBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Basic bearing series with 120 mm bore, 215 mm OD |
| CD | Specific internal design and contact angle of 15° |
| P4 | High precision tolerance class for superior running accuracy |
| QBCA | Quadruplex Back-to-Back arrangement with Extra Light Preload (Class A) |
7224 CD/P4QBCA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The quadruplex back-to-back configuration creates an extremely rigid bearing system capable of handling heavy combined loads and moment loads. This arrangement significantly enhances system stability and positioning accuracy.
Precision Performance: Manufactured to P4 tolerance standards with precisely controlled bearing dimensions, this set ensures minimal runout and vibration. The 15° contact angle provides optimal balance between radial and axial load capacity.
High-Speed Capability: Featuring a phenolic cage and optimized internal geometry, this bearing set achieves a limiting speed of 10,000 rpm. The extra light preload minimizes friction and heat generation at high speeds.
Premium Materials: Constructed from chrome steel for both rings and balls, ensuring high durability and long service life under demanding operating conditions.
7224 CD/P4QBCA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers
- High-Speed Machining Centers: Applications requiring extreme accuracy and rigidity
- Precision Rotary Tables: Indexing and positioning systems
- Aerospace Manufacturing Equipment: Critical machining applications
- Medical Device Manufacturing: Precision machining equipment
- High-Frequency Spindle Drives: Where superior rotational accuracy is mandatory
