709 CE/P4ADT
Miniature Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
709 CE/P4ADT
Basic Information
System of measurement
Metric
Weight
0.028 kg
Tolerance class
P4A
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
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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709 CE/P4ADT Bearing Product Overview & Core Advantages
The 709 CE/P4ADT is a super-precision angular contact ball bearing supplied as a Duplex Tandem (DT) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this bearing is designed to accommodate primarily axial loads in one direction, amplified by the tandem mounting configuration. Its P4A tolerance class ensures ultra-precise running accuracy, making it ideal for high-speed spindles and other critical machinery components requiring maximum stiffness and performance.
709 CE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 709 | Basic bearing series designation. |
| C | Specifies a 15° contact angle, optimized for high axial load capacity. |
| E | Indicates an optimized internal design, often including larger ball size and a reinforced cage for enhanced performance. |
| P4A | Denotes an ultra-high precision tolerance class exceeding ABEC 7/ISO P4 standards, ensuring minimal runout and vibration. |
| DT | Signifies a Duplex Tandem preloaded pair. This arrangement stacks bearings to significantly increase axial load capacity and system rigidity in one direction. |
709 CE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The Duplex Tandem (DT) mounting creates a highly rigid assembly capable of supporting very high axial loads. The 15° contact angle is specifically chosen to maximize this axial load rating.
- Super-Precision Operation: Manufactured to P4A tolerance class, this bearing guarantees exceptional running accuracy, low noise, and minimal vibration, which is critical for high-speed applications.
- High-Speed Capability: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed of 95,000 rpm.
- Optimized Internal Geometry: The "E" design incorporates a larger ball diameter and optimized raceway geometry, increasing the dynamic and static load ratings for longer service life.
- Pre-lubricated: Supplied with grease, the bearing is ready for immediate installation and initial operation.
709 CE/P4ADT Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors
- Robotic Drives and Servo Motors
- Medical and Dental Handpiece Drives
- Aerospace Actuation Systems
