709 ACE/P4A
Miniature Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
709 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.014 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
9
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
565 lbf
Radial static load rating
202 lbf
Limiting speed
137 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:
$ 104.35
/ each
In Stock
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709 ACE/P4A Bearing Product Overview & Core Advantages
The 709 ACE/P4A is a single-row angular contact ball bearing engineered for high-precision applications. Designed to accommodate combined loads, it efficiently supports both radial loads and substantial axial loads in one direction. Its P4 (ABEC-7) tolerance class ensures exceptional running accuracy, making it ideal for scenarios demanding high rigidity and superior rotational performance. The bearing is pre-lubricated and features a phenolic cage, contributing to its readiness for high-speed operation and reliable service in precision assemblies.
709 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | Indicates a 25° contact angle and a phenolic resin cage. This combination is optimized for high-speed performance and stability. |
| P4A | Denotes a P4 tolerance class (equivalent to ABEC-7), signifying very high precision in dimensions and running accuracy. |
709 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 25° contact angle provides excellent rigidity for precise shaft positioning. Manufactured to P4 tolerance, it guarantees minimal runout and smooth operation.
- Superior Load Capacity: The angular contact design is inherently capable of handling combined radial and axial loads simultaneously, making it a robust choice for complex loading conditions.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, while the pre-lubrication and optimized internal geometry contribute to a high limiting speed of 137,000 rpm.
- Pre-Lubricated for Immediate Use: The bearing comes pre-lubricated, ensuring immediate installation and initial operation without the need for additional lubrication, simplifying the assembly process.
709 ACE/P4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for demanding applications, including:
- High-Speed Spindles in machine tools and PCB drilling machines
- Precision components in medical and dental handpieces
- Rotary assemblies in optical encoders and measuring instruments
- Axial compressor components and other high-speed machinery
