719/8 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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719/8 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 719/8 CE/HCP4ADBA is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a duplex back-to-back (DB) matched set, it is pre-configured to provide exceptional stability and can accommodate combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class and featuring a ceramic ball and phenolic cage construction, this bearing delivers superior rotational accuracy, reduced heat generation, and extended service life in precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 719/8 | Bearing series and bore diameter (8 mm). |
| CE | Contact angle of 15°. |
| HC | Hybrid ceramic balls (Silicon Nitride). |
| P4A | High-precision tolerance class, exceeding ABEC 7. |
| DB | Duplex Back-to-Back preloaded arrangement. |
| A | Extra light preload. |
719/8 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and provides exceptional operational stability under combined radial and axial loads.
Superior High-Speed Performance: The combination of lightweight ceramic balls and a phenolic resin cage significantly reduces centrifugal forces and inertial friction, enabling the bearing to achieve its high limiting speed of 100,000 rpm with minimal heat buildup.
Precision & Longevity: The P4A tolerance class ensures minimal runout and vibration for ultra-smooth operation. The open design allows for optimized lubrication management in high-speed systems, while the hybrid ceramic construction offers excellent resistance to wear and a longer operational life.
719/8 CE/HCP4ADBA Bearing Typical Application Areas
This super-precision bearing is ideally suited for applications requiring the highest levels of speed and accuracy, including:
- High-Frequency CNC Spindles
- Precision Grinding Machine Spindles
- High-Speed Dental and Medical Handpieces
- Aerospace Instrumentation and Gyroscopes
- Turbo-Molecular Vacuum Pumps
