7009 ACDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7009 ACDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.24 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6210 lbf
Radial static load rating
4860 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
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:
$ 77.28
/ each
In Stock
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7009 ACDGA/P4A Bearing Product Overview & Core Advantages
The 7009 ACDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional operational stability. Manufactured to the stringent P4A tolerance class, this bearing is designed to handle significant axial loads in one direction and combined radial and axial loads. Its extra light preload (Class A) minimizes deflection under load, ensuring smooth, quiet operation and enhanced positional accuracy. The phenolic cage and optimized internal geometry contribute to superior high-speed performance, making it an ideal choice for precision spindles and other critical machinery components.
7009 ACDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| AC | Angular Contact design with a 25° contact angle, optimized for high axial load capacity. |
| DGA | Indicates a Universal Matchable (SU) bearing. Two bearings can be mounted together (face-to-face, back-to-back, or tandem) to adjust preload or increase load capacity. |
| P4A | Specifies the tolerance class, denoting extremely tight dimensional and running accuracy, superior to ABEC-7/ISO P4 standards. |
7009 ACDGA/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4A tolerance class and extra light preload ensure minimal runout and high system rigidity, critical for maintaining accuracy under operational stresses.
- Optimized Load Capacity: The 25° contact angle and robust internal design provide excellent axial load carrying capability in one direction, as well as high radial dynamic load rating (6210 lbf).
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and enables a high limiting speed of 41,000 rpm. This cage material also offers good dimensional stability and operates quietly.
- Universal Matching Capability: The DGA (Universal Matchable) feature allows for precise arrangement in sets, enabling engineers to configure multiple bearings to achieve specific stiffness and load-sharing characteristics.
7009 ACDGA/P4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for demanding applications where accuracy, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: High-accuracy measuring devices and optical scanners.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Robotics: Precision joints and arm assemblies requiring high rigidity and low friction.
