719/8 CE/P4A
Miniature Super Precision Angular Contact Ball Bearings
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719/8 CE/P4A Bearing Product Overview & Core Advantages
The 719/8 CE/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and exceptional rotational accuracy. Engineered to primarily accommodate combined loads (radial and axial loads in one direction), this bearing features a 15° contact angle and is manufactured to a P4 (ABEC-7) tolerance class. Its compact design, with a bore diameter of 8 mm and an outside diameter of 19 mm, makes it ideal for high-speed spindles and other precision machinery where space is limited and performance is critical.
719/8 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 719/8 | Indicates the bearing series and bore diameter (8 mm). |
| CE | Signifies a 15° contact angle and a design optimized for high-speed operation. |
| P4A | Denotes the tolerance class P4 (ABEC-7), ensuring extremely tight dimensional and running accuracy for precision applications. |
719/8 CE/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The combination of a phenolic resin cage and a 15° contact angle enables a high limiting speed of 185,000 rpm, making it suitable for demanding high-speed applications.
Precision Performance: Manufactured to P4 super-precision standards, this bearing ensures minimal runout and vibration, which is critical for the accuracy of machine tools and measuring instruments.
Optimized Load Capacity: The angular contact design is engineered to support significant combined radial and axial loads simultaneously, providing reliable performance under complex loading conditions.
Pre-Lubricated & Open Design: The bearing comes pre-lubricated, facilitating initial operation. The open seal type allows for custom lubrication regimes tailored to specific application needs, though it requires a clean operating environment.
719/8 CE/P4A Bearing Typical Application Areas
The 719/8 CE/P4A is ideally suited for high-precision, high-speed applications across various industries, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Aerospace Instrumentation
