S7024 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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S7024 CE/HCP4A Bearing Product Overview & Core Advantages
The S7024 CE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed, rigidity, and accuracy. As a single-row bearing, it is optimized to handle significant combined loads (radial and axial) simultaneously. Its defining features include a P4 (ABEC-7) tolerance class for superior running accuracy, a 15° contact angle for optimal axial load capacity, and a preloaded configuration ensuring high system stiffness and minimal deflection. The combination of a phenolic cage and ceramic balls makes it an ideal high-speed bearing, offering reduced friction, lower operating temperatures, and extended service life.
S7024 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| S7024 | Basic bearing series and size designation (120mm bore, 180mm OD). | Defines the core bearing dimensions and internal geometry. |
| CE | Hybrid bearing designation, indicating Ceramic balls and Steel rings. | Enables higher speeds, reduced weight, and superior performance under marginal lubrication. |
| HC | Refers to the Phenolic (Polyamide) cage material. | Provides excellent strength-to-weight ratio, reduced friction, and is ideal for high-speed operation. |
| P4A | Specifies the P4 (ABEC-7) tolerance class and a light preload (A). | Guarantees ultra-precise running accuracy and enhanced system rigidity for critical applications. |
S7024 CE/HCP4A Bearing Structural Features & Performance Benefits
High-Speed & High-Rigidity Design: The phenolic cage (HC) and ceramic balls (CE) are central to its performance. The lightweight cage minimizes centrifugal forces, while the ceramic balls have lower density, reducing rolling element inertia. This synergy allows for a very high limiting speed of 11,200 rpm. The preload (P4A) eliminates internal clearance, resulting in significantly increased stiffness and precise shaft positioning.
Superior Load Capacity: The 15° contact angle is engineered to handle substantial axial loads in one direction in addition to radial loads. With a dynamic load rating of 12,870 lbf and a static load rating of 12,375 lbf, it is robust enough for demanding combined load scenarios.
Precision & Longevity: Manufactured to P4 tolerance, this bearing ensures minimal runout and vibration, which is critical for precision machinery. The sealed and lubricated design protects against contamination and is ready for immediate use, offering reliable performance across a wide temperature range from -30°C to 110°C.
S7024 CE/HCP4A Bearing Typical Application Areas
This bearing is specified for high-performance applications where speed, precision, and reliability are non-negotiable. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Speed Motors & Compressors: Where low friction and high rotational accuracy are required.
