719/8 CE/P4ADGA
Miniature Super Precision Angular Contact Ball Bearings
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719/8 CE/P4ADGA Bearing Product Overview & Core Advantages
The 719/8 CE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-lubricated set of two, it enables simplified mounting and optimal performance in preloaded arrangements. Its P4A tolerance class ensures ultra-precise running accuracy, while the phenolic cage and 15° contact angle contribute to its superior high-speed capabilities and ability to handle combined radial and axial loads.
719/8 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 719/8 | Super-precision angular contact bearing series with 8 mm bore diameter |
| CE | 15° contact angle design |
| P4A | High-precision tolerance class with specific running accuracy requirements |
| DGA | Universal matchable bearing pair (SU designation) |
719/8 CE/P4ADGA Bearing Structural Features & Performance Benefits
High-Speed Performance: The phenolic resin cage and optimized internal geometry enable exceptional performance at limiting speeds up to 220,000 rpm, making it ideal for high-speed spindle applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), ensuring minimal runout and vibration for superior rotational accuracy.
Universal Matching Capability: As an SU-type universal matchable bearing, pairs can be mounted in various preload configurations (back-to-back, face-to-face, or tandem) without selective assembly, simplifying installation and maintenance.
Optimized Load Capacity: The 15° contact angle provides balanced performance for combined loads, with a dynamic load rating of 632 lbf and static load rating of 274 lbf.
719/8 CE/P4ADGA Bearing Typical Application Areas
- High-speed machine tool spindles for precision machining centers
- Precision grinding spindles in manufacturing equipment
- High-frequency motor spindles for industrial applications
- Dental and medical equipment requiring ultra-precise rotation
- Aerospace instrumentation and precision positioning systems
- Semiconductor manufacturing equipment with high-speed requirements
