708 CEGA/P4A
Miniature Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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708 CEGA/P4A Bearing Product Overview & Core Advantages
The 708 CEGA/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and reliability. Manufactured to P4A tolerance class, this bearing delivers superior dimensional stability and running precision. Its 15° contact angle is optimized to handle significant combined loads (radial and axial loads simultaneously), while the Universal Matchable (SU) designation allows for precise preload control when mounted in pairs. The phenolic cage enables smooth operation at high speeds up to 100,000 rpm, making it ideal for demanding applications where both precision and speed are critical.
708 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 708 | Basic bearing designation | Standard metric size reference |
| CE | Contact angle design (15°) and internal optimization | Optimized for combined load capacity and high-speed operation |
| GA | Precision preload classification (Extra light / Class A) | Minimal friction, ideal for high-speed applications requiring low torque |
| P4A | Super precision tolerance class | Exceptional dimensional accuracy and running precision for critical applications |
708 CEGA/P4A Bearing Structural Features & Performance Benefits
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional consistency and running accuracy.
High-Speed Capability: The phenolic resin cage provides excellent dimensional stability at high rotational speeds while reducing friction, enabling operation up to 100,000 rpm.
Superior Load Capacity: With a 15° contact angle design, this bearing effectively handles combined radial and axial loads, featuring a dynamic load rating of 526 lbf and static load rating of 180 lbf.
Universal Matching Design: As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to achieve optimal preload conditions for enhanced system rigidity.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, providing excellent wear resistance and durability in demanding operating conditions.
708 CEGA/P4A Bearing Typical Application Areas
The 708 CEGA/P4A is specifically engineered for high-precision, high-speed applications including:
- Machine tool spindles requiring exceptional rotational accuracy
- High-speed machining centers and precision grinding equipment
- Medical equipment such as dental handpieces and surgical tools
- Aerospace components including gyroscopes and navigation systems
- Precision instrumentation and laboratory equipment
- Robotics and automation systems demanding high positional accuracy
