7224 CDGA/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7224 CDGA/P4A Bearing Product Overview & Core Advantages
The 7224 CDGA/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads (simultaneous radial and axial loads), this bearing features a 15° contact angle optimized for high-speed operation. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-rigidity and high-reliability systems. The phenolic cage and universal matchable (SU) designation allow for precise preload configuration in multi-bearing arrangements.
7224 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Basic bearing series and size designation (120mm bore, 215mm OD, 40mm width) |
| C | 15° contact angle |
| DG | Universal Matchable (SU) bearing for duplex arrangements |
| A | Extra light preload class |
| P4A | High-precision tolerance class exceeding ABEC 7 standards |
7224 CDGA/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, ensuring minimal runout and vibration for superior rotational accuracy.
High-Speed Capability: The phenolic cage and 15° contact angle enable stable operation at limiting speeds up to 10,000 rpm, while the optimized ball quantity (15) and ball diameter (30.162mm) provide balanced performance.
Enhanced Load Capacity: With dynamic load rating of 44,775 lbf and static load rating of 43,425 lbf, this bearing delivers reliable performance under significant combined loads.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be precisely paired in sets of 4 to achieve specific preload and stiffness requirements in complex spindle arrangements.
7224 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers, grinding spindles, and CNC milling machines
- High-Speed Precision Equipment: Semiconductor manufacturing equipment, precision measuring instruments
- Industrial Pumps & Compressors: High-speed centrifugal pumps, precision compressor systems
- Aerospace Systems: Aircraft instrumentation, guidance system components
- Robotics & Automation: High-accuracy robotic joints, precision positioning systems
