7007 ACD/P4AHDBA
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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7007 ACD/P4AHDBA Bearing Product Overview & Core Advantages
The 7007 ACD/P4A is a precision duplex angular contact ball bearing configured in a Back-to-Back (DB) arrangement. This high-performance bearing is engineered to simultaneously handle combined radial and axial loads with exceptional accuracy and rigidity. Manufactured to P4A tolerance class, it is an ideal solution for high-speed, high-precision applications requiring superior rotational accuracy and dimensional stability. The extra light preload (Class A) ensures smooth, quiet operation and minimizes deflection under load.
7007 ACD/P4AHDBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series with 35mm bore diameter |
| AC | Angular Contact design with 25° contact angle |
| D | Duplex Back-to-Back (DB) arrangement |
| P4A | High precision tolerance class (superior to ABEC-7) |
7007 ACD/P4AHDBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system that can withstand combined radial and axial loads from both directions, making it exceptionally stable under complex loading conditions.
Precision Performance: Manufactured to P4A tolerance class with extremely tight dimensional tolerances (bore: -0.004mm to 0, OD: -0.004mm to 0), ensuring minimal runout and superior rotational accuracy.
High-Speed Capability: Features a phenolic cage that reduces friction and enables high-speed operation up to 56,000 rpm, while the optimized 25° contact angle provides excellent axial load capacity.
Premium Material Construction: Made from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life in demanding applications.
7007 ACD/P4AHDBA Bearing Typical Application Areas
The 7007 ACD/P4A is specifically designed for high-precision machinery and equipment including:
- Machine tool spindles and high-precision machining centers
- High-frequency motor spindles and precision grinding applications
- Industrial robotics and automation equipment
- Precision measuring instruments and optical equipment
- Aerospace components requiring exceptional accuracy and reliability
