719/8 CE/HCP4AH
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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719/8 CE/HCP4AH Bearing Product Overview & Core Advantages
The 719/8 CE/HCP4AH is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. This P4A super-precision bearing features a 15° contact angle optimized for handling combined radial and axial loads in one direction. Its ceramic balls and phenolic cage contribute to superior high-speed performance, while the preloaded configuration ensures minimal deflection under operational stresses, making it ideal for machine tool spindles and other demanding precision equipment.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 719/8 | Basic bearing series with 8 mm bore diameter |
| CE | 15° contact angle design |
| HC | Hybrid ceramic balls (silicon nitride) |
| P4A | ABEC 7/P4A super precision tolerance class |
719/8 CE/HCP4AH Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: Silicon nitride balls provide significant advantages including reduced friction, higher stiffness, and extended service life compared to all-steel designs. The ceramic balls also exhibit excellent electrical resistance and can operate with minimal lubrication.
Phenolic Resin Cage: The lightweight phenolic cage ensures stable operation at high rotational speeds up to 220,000 rpm, offering excellent dimensional stability and minimal centrifugal forces.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore diameter tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
Optimized Load Capacity: The 15° contact angle configuration provides balanced performance for combined loads, with a dynamic load rating of 392 lbf and static load rating of 137 lbf.
719/8 CE/HCP4AH Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding applications
- Precision Instrumentation: Medical devices, optical equipment, and measuring instruments
- High-Speed Motors: Spindle motors and high-frequency electric motors
- Aerospace Components: Guidance systems and auxiliary power units
- Semiconductor Manufacturing: Wafer handling equipment and precision positioning systems
