7204 ACD/P4ADFB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7204 ACD/P4ADFB Bearing Product Overview & Core Advantages
The 7204 ACD/P4ADFB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched set features a Face-to-Face (DF) duplex arrangement and is manufactured to the stringent P4A tolerance class, ensuring superior running precision. Its core advantage lies in its ability to handle combined radial and axial loads simultaneously, providing high system stiffness and stable performance in high-speed, high-precision environments. The phenolic cage and optimized 25° contact angle contribute to its excellent operational characteristics.
7204 ACD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Angular Contact, Duplex arrangement |
| P4A | High precision tolerance class (exceeds ABEC 7) |
| DF | Duplex Face-to-Face mounting |
| B | Light preload (Class B) |
7204 ACD/P4ADFB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex DF arrangement creates a rigid bearing system capable of withstanding significant combined loads from multiple directions. The 25° contact angle is optimized for supporting substantial axial loads.
- Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and excellent stability at high rotational speeds, with a limiting speed of 100,500 rpm.
- Optimized Internal Geometry: Featuring 11 precision balls of 7.938 mm diameter, the design minimizes friction and heat generation, contributing to the bearing's high-speed capability and long service life.
- Preloaded Configuration: The light preload (Class B) eliminates internal clearance, enhancing system stiffness and rotational accuracy for demanding applications.
7204 ACD/P4ADFB Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers
- High-Speed Machining Centers: Where exceptional rigidity and accuracy are paramount
- Precision Instrumentation: Measuring devices and analytical equipment
- Robotic Arm Joints: Precision motion control applications
- Medical Equipment: High-speed dental handpieces and surgical tools
