7004 ACE/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7004 ACE/P4A Bearing Product Overview & Core Advantages
The 7004 ACE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to P4 (ABEC-7) tolerance class, it delivers superior running accuracy for demanding operational environments. Its primary advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. The bearing comes pre-lubricated and is available with a preload, ensuring optimal performance from installation, making it ideal for high-speed spindles and precision machinery where reliability is critical.
7004 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7004 | Basic bearing series and size designation (20mm bore, 42mm OD, 12mm width). |
| ACE | Specific internal design featuring a 25° contact angle and optimized internal geometry for high axial load capacity and rigidity. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements for precision applications. |
7004 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and robust internal construction enable the bearing to support substantial combined radial and axial loads in one direction, providing stable and rigid support for shafts.
- Precision Performance: Manufactured to P4 tolerance class, it ensures minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
- High-Speed Capability: The phenolic resin cage offers low weight and excellent high-speed stability, contributing to the bearing's high limiting speed of 75,000 rpm.
- Optimized for Precision Use: The bearing is supplied pre-lubricated and is available with a preload, reducing initial setup complexity and ensuring immediate, precise performance in matched arrangements.
7004 ACE/P4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Precision Drives
- Industrial Pumps and Compressors
- Precision Measuring Instruments
- Robotic Arms and Automation Equipment
