708 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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708 CEGA/HCP4A Bearing Product Overview & Core Advantages
The 708 CEGA/HCP4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and superior performance. Its design is optimized to support combined loads, primarily handling thrust loads in one direction while accommodating moderate radial loads. Manufactured to the stringent P4A tolerance class, this bearing ensures exceptional running accuracy and rotational stability. A key advantage is its universal matching (SU) capability, allowing two bearings to be paired for increased rigidity and precise preload control. The combination of a ceramic ball material and phenolic cage contributes to its high-speed capabilities and extended service life.
708 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CEGA | Indicates a universally matchable bearing with a 15° contact angle and an extra light preload (Class A). |
| HC | Signifies the use of Hybrid Ceramic balls, offering benefits such as reduced weight, higher speed potential, and improved durability. |
| P4A | Denotes a super-precision tolerance class that exceeds ABEC 7 standards, ensuring minimal runout and vibration for critical applications. |
708 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls significantly reduce centrifugal forces, enabling a high limiting speed of 100,000 rpm. This makes it ideal for high-speed spindle applications.
- Rigidity and Accuracy: The 15° contact angle provides an optimal balance between radial and axial load capacity. When mounted in a universal matched set, the arrangement delivers high rigidity and precise axial positioning.
- Extended Service Life: Hybrid ceramic construction offers superior resistance to wear and is less susceptible to electrical arcing, leading to a longer operational lifespan, especially in demanding environments.
- Precision Engineering: The P4A tolerance class guarantees tight dimensional control on the bore diameter and outside diameter, resulting in smooth, quiet, and vibration-free operation.
708 CEGA/HCP4A Bearing Typical Application Areas
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Robotics and Automation
- Medical and Dental Handpiece Drives
- Aerospace Instrumentation and Gyroscopes
