719/9 CE/P4A
Miniature Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
719/9 CE/P4A
Basic Information
System of measurement
Metric
Weight
0.008 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
20 mm
Outside diameter tolerance
-0.005mm to 0
Width
6 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.175 mm
Ball quantity
11
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
448 lbf
Radial static load rating
172 lbf
Limiting speed
165 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 107.98
/ each
In Stock
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719/9 CE/P4A Bearing Product Overview & Core Advantages
The 719/9 CE/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a single bearing with a 15° contact angle and available preload, it is engineered to support combined loads (radial and axial) simultaneously. Its P4 (ABEC-7) tolerance class ensures minimal runout and vibration, making it ideal for high-reliability, high-precision spindles and machinery. The phenolic cage and optimized internal geometry contribute to its outstanding high-speed capability and smooth operation.
719/9 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 719/9 | Bearing series and size designation (9mm bore). |
| CE | Indicates a 15° contact angle and high-precision design. |
| P4A | Denotes the tolerance class P4 (ABEC-7) and specific internal running accuracy specifications. |
719/9 CE/P4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces and ensures stable operation at the high limiting speed of 165,000 rpm. The open design facilitates efficient lubrication and cooling.
- High Rigidity & Accuracy: Manufactured to P4 precision standards with a 15° contact angle, this bearing provides high system rigidity and minimal deflection under load, which is critical for maintaining machining accuracy.
- Superior Load Capacity: The angular contact design is optimized to handle significant combined radial and axial loads, with a dynamic load rating of 448 lbf and a static load rating of 172 lbf.
- Optimized Internal Geometry: Features 11 precision balls of 3.175 mm diameter for smooth motion and reduced friction, contributing to the bearing's high-speed and low-noise characteristics.
719/9 CE/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is predominantly used in high-performance applications where speed and accuracy are paramount. Key industries and equipment include:
- High-Frequency Spindles for PCB drilling and milling
- Precision Machine Tool main spindles
- High-Speed Robotics and automation arms
- Medical and Dental Handpieces
- Optical Scanners and encoder systems
