S7204 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7204 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.11 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
11
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2678 lbf
Radial static load rating
1316 lbf
Limiting speed
36 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:
$ 119.4
/ each
In Stock
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S7204 CD/P4A Bearing Product Overview & Core Advantages
The S7204 CD/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this bearing is preloaded and optimized to handle combined loads—simultaneous radial and axial forces—with superior stability. Its compact design, featuring a phenolic cage and factory-applied lubrication, makes it an ideal choice for high-speed spindles and other precision machinery where reliability and minimal runout are critical.
S7204 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Benefit |
|---|---|---|
| CD | Matched set with specific preload | Indicates the bearing is supplied with a controlled, light preload, ensuring high system stiffness and precise shaft positioning without requiring adjustment during installation. |
| P4A | Tolerance class equivalent to ABEC-7 | Denotes ultra-precise manufacturing tolerances for bore, outside diameter, and width, resulting in exceptionally smooth and quiet operation at high speeds. |
S7204 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 15° contact angle and preload work in tandem to provide maximum resistance to deflection under load, ensuring exceptional rotational accuracy and system stability.
- Superior Load Capacity: As an angular contact bearing, it is engineered to support significant combined radial and axial loads in one direction, making it suitable for applications with demanding force requirements.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces and inertial drag, contributing to the high limiting speed of 36,000 rpm. This cage material also offers excellent performance under lubrication.
- Ready-to-Install & Reliable: The bearing comes sealed and lubricated from the factory, protecting it from contamination and providing long-term, maintenance-free operation within its specified temperature range.
S7204 CD/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery, including:
- Machine Tool Spindles: For CNC machining centers, grinders, and lathes requiring high speed and rigidity.
- Precision Drives: In high-frequency motors and spindles.
- Robotics: For high-accuracy joints and arm assemblies.
- Medical Equipment: In dental handpieces and laboratory instrumentation.
- Aerospace Components: For auxiliary systems demanding reliability and precision.
