7224 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7224 CD/HCP4A Bearing Product Overview & Core Advantages
The 7224 CD/HCP4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Its design is optimized to support combined loads, efficiently handling substantial radial loads and axial loads in one direction simultaneously. Manufactured to P4 (ABEC-7) tolerance class, it guarantees superior running accuracy. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capabilities, low friction, and extended service life, making it an ideal choice for demanding, high-performance machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7224 | Basic bearing series and size designation (120mm bore, 215mm OD, 40mm width). |
| C | Designates a 15° contact angle, optimized for high-speed operation. |
| D | Indicates the bearing is part of a matched set for preload. |
| HC | Signifies the use of Hybrid Ceramic balls (ceramic balls with steel rings). |
| P4A | Denotes a P4 tolerance class with specific running accuracy requirements. |
7224 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design with a 15° contact angle provides high rigidity and precise shaft guidance, essential for applications with minimal deflection.
- Superior High-Speed Performance: The hybrid ceramic construction (ceramic balls) significantly reduces centrifugal forces and friction, while the lightweight phenolic resin cage ensures stable operation at the high limiting speed of 12,000 rpm.
- Excellent Load Capacity: Engineered to handle high dynamic and static load ratings (44,775 lbf and 43,425 lbf respectively), this bearing reliably supports significant combined radial and axial loads.
- Pre-Lubricated and Open Design: The open seal type allows for optimal lubrication management in controlled environments, while the pre-lubrication facilitates immediate startup and initial operation.
7224 CD/HCP4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for advanced machinery where speed, accuracy, and reliability are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling and grinding spindles)
- Precision Robotics and Automation Equipment
- High-Frequency Motors and Spindles
- Aerospace and Defense Instrumentation
- Medical Equipment such as dental handpieces and imaging devices
