709 CE/HCPA9ADGB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
709 CE/HCPA9ADGB
Basic Information
System of measurement
Metric
Weight
0.026 kg
Tolerance class
PA9A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
9
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
952 lbf
Radial static load rating
418 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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709 CE/HCPA9ADGB Bearing Product Overview & Core Advantages
The 709 CE/HCPA9ADGB is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing is designed to accommodate combined loads (radial and axial) simultaneously. Its key advantages include superior high-speed capability enabled by a phenolic cage and ceramic balls, a light preload (Class B) for minimal running torque and high positional accuracy, and PA9A tolerance class for superior dimensional and running accuracy. This bearing is pre-lubricated and operates effectively within a wide temperature range, making it ideal for high-reliability, precision machinery.
709 CE/HCPA9ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 709 CE | Basic bearing series designation, indicating a metric angular contact ball bearing with a 9mm bore, 24mm OD, and 14mm width. |
| HC | Indicates the use of Hybrid Ceramic components, specifically ceramic balls for reduced friction, higher speed, and longer service life. |
| PA9A | Specifies the high-precision tolerance class, ensuring extremely tight dimensional and running accuracy for critical applications. |
| DGB | Denotes a Universal Matchable (SU) bearing. Two bearings with this suffix can be mounted in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement without pre-calculation, offering flexible and rigid bearing setups. |
709 CE/HCPA9ADGB Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation. This results in a higher limiting speed (95,000 rpm), reduced wear, and extended service life, especially in high-speed applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable operation at very high speeds, providing excellent strength and guidance for the ceramic balls.
- Universal Matchability (SU): This feature allows for simplified mounting of matched bearing sets in various configurations to optimize stiffness and load capacity for the application, enhancing system rigidity.
- Light Preload (Class B): The built-in light preload minimizes axial and radial play, resulting in high running accuracy, reduced vibration, and precise shaft positioning without the need for complex adjustment during installation.
- Pre-lubricated & Open Design: The bearing comes pre-lubricated for immediate operation and features an open design, making it suitable for systems with centralized lubrication for continuous performance.
709 CE/HCPA9ADGB Bearing Typical Application Areas
This high-precision, high-speed angular contact ball bearing is ideally suited for:
- High-Speed Spindles in CNC machining centers, grinding machines, and PCB drilling machines
- Precision Instrumentation and medical equipment
- High-Frequency Motors and servo drives
- Aerospace Actuators and auxiliary power units
- Semiconductor Manufacturing Equipment
