7004 ACD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7004 ACD/P4A Bearing Product Overview & Core Advantages
The 7004 ACD/P4A is a single-row angular contact ball bearing designed for applications requiring high precision and high-speed operation. Engineered to a P4 (ABEC-7) tolerance class, it delivers exceptional running accuracy. Its key advantage lies in its ability to support combined loads, carrying significant radial loads and axial loads in one direction simultaneously. The 25° contact angle provides an optimal balance between axial load capacity and speed capability. This bearing comes pre-lubricated and is ideal for machine tool spindles and other high-performance machinery where rigidity and precision are paramount.
7004 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and that the bearing is optimized for high-speed, high-precision applications. |
| P4A | Specifies the tolerance class P4 (ABEC-7), denoting very high precision levels for dimensional and running accuracy. |
7004 ACD/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4 tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and high running accuracy, providing stable and rigid support for spindles.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently handle combined radial and axial loads, making it suitable for applications with complex loading conditions.
- Superior High-Speed Performance: The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 60,000 rpm, reducing centrifugal forces and heat generation.
- Pre-Lubricated & Ready for Use: The bearing is factory-lubricated, ensuring immediate performance and simplifying the installation process for precision assemblies.
7004 ACD/P4A Bearing Typical Application Areas
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Instrumentation
- High-Frequency Motors
- Medical Equipment (e.g., Dental handpieces)
- Robotic Arm Joints
