7007 ACD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7007 ACD/P4A Bearing Product Overview & Core Advantages
The 7007 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Characterized by a 25° contact angle and manufactured to P4 (ABEC-7) tolerance class, this bearing is optimized to handle significant axial loads in one direction while supporting combined radial and axial loads. Its phenolic resin cage contributes to smooth operation at high speeds, making it an ideal component for machine tool spindles and other demanding equipment where high rigidity and precise positioning are critical.
7007 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Indicates a 25° contact angle and optimized internal geometry for high axial load capacity and rigidity. |
| P4A | Specifies a P4 (ABEC-7) tolerance class with specific running accuracy requirements, ensuring superior dimensional precision and smooth operation. |
7007 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The optimized 25° contact angle and robust internal construction enable the bearing to support high combined loads, with a primary focus on unidirectional axial loads, providing stable and rigid support for spindles.
- High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction, contributing to a high limiting speed of 32,000 rpm, which is essential for high-speed applications.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing guarantees minimal runout and vibration, which is critical for achieving high machining accuracy and surface finish quality.
- Durable Construction: Components made from chrome steel provide high hardness and wear resistance, ensuring long service life under demanding operating conditions.
7007 ACD/P4A Bearing Typical Application Areas
- Machine Tool Spindles (e.g., CNC machining centers, grinding spindles)
- High-Speed Motors and Precision Gearboxes
- Industrial Pumps and Compressors
- Robotic Arms and Precision Positioning Systems