S7209 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7209 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.42 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
85 mm
Outside diameter tolerance
-0.008mm to 0
Width
19 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
9518 lbf
Radial static load rating
6975 lbf
Limiting speed
17 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:
$ 367.98
/ each
In Stock
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S7209 CD/P4A Bearing Product Overview & Core Advantages
The S7209 CD/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This sealed single bearing features a phenolic cage and is preloaded, enabling it to handle combined loads (radial and axial) simultaneously with high stability. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other precision machinery where minimal runout and high reliability are critical.
S7209 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CD | High rigidity, 15° contact angle design with optimized internal geometry. | Provides enhanced stiffness for precise shaft positioning. |
| P4A | Dimensional and running accuracy to P4 (ABEC-7) tolerance class. | Ensures smooth, quiet operation and high rotational accuracy. |
S7209 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The optimized internal design and application of preload result in a very stiff bearing assembly, significantly reducing deflection under load for improved machining or operational accuracy.
- Superior Load Capacity: The 15° contact angle and robust construction enable the bearing to support substantial combined radial and axial loads.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 17,000 rpm. This makes it suitable for high-speed applications.
- Sealed & Lubricated for Life: As a sealed and pre-lubricated unit, the bearing is protected from contamination and is maintenance-free, ensuring long-term reliability within its specified temperature range.
S7209 CD/P4A Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and other high-precision equipment.
- High-Speed Motors: Used in electric motors and spindles requiring high rotational speeds and accuracy.
- Precision Instrumentation: Critical components in measuring devices and optical scanners.
- Pumps and Compressors: Where reliable performance under combined loads is essential.
