7024 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7024 ACB/HCP4A Bearing Product Overview & Core Advantages
The 7024 ACB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional speed performance. Its defining feature is the combination of a 25° contact angle and ceramic ball construction, enabling it to handle significant axial loads in one direction while accommodating radial loads. This bearing is preloaded and manufactured to a P4 (ABEC-7) tolerance class, ensuring minimal runout and superior rotational accuracy for the most demanding high-speed spindle and precision machinery applications.
7024 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| ACB | Angular Contact Bearing with a specific 25° contact angle. | Optimized for high axial load capacity and rigidity. |
| H | Indicates the use of Hybrid Ceramic Balls (Silicon Nitride). | Reduced centrifugal force, lower operating temperature, and extended service life at high speeds. |
| C | Refers to the Phenolic Resin Cage. | Lightweight and offers excellent guidance and performance at high rotational speeds. |
| P4A | Denotes the P4 (ABEC-7) precision tolerance class and specific internal running accuracy. | Guarantees superior running accuracy, low vibration, and high positional precision. |
7024 ACB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of steel rings and ceramic balls significantly reduces weight and inertia, allowing for higher limiting speeds (15,000 rpm) and reduced heat generation. Ceramic's inherent properties also provide superior resistance to wear and electrical arcing.
- High-Precision & Preload: Manufactured to P4 tolerance and supplied preloaded, this bearing delivers exceptional rotational accuracy, stiffness, and minimal axial/radial play, which is critical for machine tool spindles.
- Optimized Cage & Lubrication: The lightweight phenolic resin cage ensures stable operation at high speeds. The bearing comes pre-lubricated with a high-speed grease suitable for its specified temperature range (-30° to 110°C).
- Robust Load Capacity: With a dynamic load rating of 8055 lbf and static load rating of 8212 lbf, it is designed to handle the combined loads encountered in demanding applications.
7024 ACB/HCP4A Bearing Typical Application Areas
The 7024 ACB/HCP4A is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key applications include:
- High-Speed Machine Tool Spindles (CNC milling, grinding, and drilling)
- Precision Grinding Spindles
- High-Frequency Motors
- Aerospace & Defense Instrumentation
- Semiconductor Manufacturing Equipment
