7204 CD/P4ADGC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7204 CD/P4ADGC Bearing Product Overview & Core Advantages
The 7204 CD/P4ADGC is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, this bearing is optimized to handle combined loads—simultaneous radial and axial forces—making it an ideal solution for high-speed spindles and precision machinery. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, ensuring optimal performance and high rigidity in complex assemblies. The phenolic cage and precision-ground components contribute to its superior high-speed capabilities and operational stability.
7204 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7204 | Basic bearing series, indicating a 20 mm bore, 47 mm OD, and 28 mm width. |
| CD | Contact angle of 15° and a specific internal design optimized for high-speed operation. |
| P4A | High-precision tolerance class, exceeding ABEC-7 standards, ensuring minimal runout and vibration. |
| DGC | Indicates a Moderate (Class C) preload and Universal Matchable (SU) designation, allowing for precise axial play adjustment when paired. |
7204 CD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and 15° contact angle enable the bearing to efficiently support significant combined radial and axial loads. The universal matching capability allows two bearings to be paired for enhanced system rigidity and precise preload control.
- Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 100,500 rpm. This makes it an excellent choice for high-speed spindle applications.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width. This ensures exceptional running accuracy, reduced vibration, and extended service life in precision equipment.
- Optimized Material Selection: Constructed from high-grade chrome steel for both rings and balls, providing high hardness, wear resistance, and durability under demanding operating conditions.
7204 CD/P4ADGC Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for applications where high speed, accuracy, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors: Spindles for PCB drilling and high-speed electric motors.
- Robotics: High-accuracy joints and arm assemblies requiring minimal backlash.
