709 ACD/P4A
Miniature Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
709 ACD/P4A
Basic Information
System of measurement
Metric
Weight
0.015 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
24 mm
Outside diameter tolerance
-0.005mm to 0
Width
7 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
776 lbf
Radial static load rating
344 lbf
Limiting speed
110 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:
$ 104.74
/ each
In Stock
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709 ACD/P4A Bearing Product Overview & Core Advantages
The 709 ACD/P4A is a single-row angular contact ball bearing designed for high-precision and high-speed applications. Engineered to a P4 (ABEC-7) tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its key advantage lies in its ability to support combined loads, efficiently handling significant radial loads and thrust loads in one direction simultaneously. The phenolic cage and optimized internal geometry contribute to its superior high-speed performance, making it an ideal choice for demanding, compact assemblies requiring high reliability and rigidity.
709 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and that the bearing is designed for universal mounting (can be paired in various arrangements). |
| P4A | Specifies the tolerance class P4 (ABEC-7), denoting very high precision for running accuracy and dimensional tolerances. |
709 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust internal construction provide high rigidity, enabling the bearing to effectively support combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction at high speeds, contributing to the high limiting speed of 110,000 rpm.
- Precision Engineering: Manufactured to P4 (ABEC-7) standards, this bearing guarantees minimal runout and vibration, which is critical for applications requiring high positional accuracy.
- Optimized Internal Geometry: With 10 precision balls and a carefully calculated raceway profile, the bearing achieves smooth operation and extended service life.
709 ACD/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Speed Motors and Spindles
- Precision Instrumentation
- Robotic Drives and Rotary Tables
- Medical and Dental Equipment
- Aerospace Actuators and Control Systems
