7003 ACD/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7003 ACD/P4A Bearing Product Overview & Core Advantages
The 7003 ACD/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. This metric bearing features a P4 (ABEC-7) tolerance class, ensuring minimal runout and vibration for superior performance. Its key advantage lies in its ability to accommodate combined loads—significant radial loads alongside substantial axial loads in one direction—making it ideal for applications demanding high speed and high rigidity. The phenolic cage and optimized contact angle of 25° contribute to its stable operation at limiting speeds up to 70,000 rpm.
7003 ACD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle, optimized for high axial load capacity and rigidity. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific running accuracy requirements, including enhanced dimensional and geometrical precision. |
7003 ACD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: Manufactured to P4 tolerance standards, this bearing provides exceptional dimensional stability and low noise operation, critical for precision machinery.
- Optimized Load Capacity: The 25° contact angle and robust construction enable it to handle significant combined radial and axial loads efficiently.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling reliable operation at high rotational speeds up to 70,000 rpm.
- Pre-Lubricated & Ready-to-Use: Factory-lubricated for immediate installation, suitable for a temperature range of -30°C to 110°C.
- Superior Material: Components made from chrome steel offer high hardness, wear resistance, and long service life.
7003 ACD/P4A Bearing Typical Application Areas
The 7003 ACD/P4A is ideally suited for high-precision, high-speed applications including:
- Machine Tool Spindles
- High-Frequency Electric Spindles
- Precision Grinding Equipment
- Medical and Dental Handpieces
- Robotic Arm Joints and Precision Gearboxes
