7007 ACD/P4ADBD
7000 Series Super Precision Angular Contact Ball Bearings
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7007 ACD/P4ADBD Bearing Product Overview & Core Advantages
The 7007 ACD/P4ADBD is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) arrangement provides superior stiffness and moment load capacity, making it ideal for high-precision spindles and machine tools. Manufactured to P4A tolerance class, it ensures minimal runout and consistent performance under combined loads. The phenolic cage and optimized 25° contact angle contribute to its excellent high-speed capabilities and smooth operation.
7007 ACD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series with 35mm bore diameter and 62mm outside diameter |
| AC | Angular Contact design with 25° contact angle |
| D | Duplex arrangement in Back-to-Back (DB) configuration |
| P4A | High precision tolerance class with enhanced running accuracy |
| DBD | Duplex Back-to-Back arrangement with preload (Heavy/Class D) |
7007 ACD/P4ADBD Bearing Structural Features & Performance Benefits
Enhanced Rigidity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and deflection, crucial for maintaining precision in machining operations.
Superior Load Capacity: With a radial dynamic load rating of 5445 lbf and static load rating of 4050 lbf, this bearing handles significant combined radial and axial loads simultaneously.
High-Speed Performance: The phenolic resin cage and optimized internal geometry enable operation at limiting speeds up to 56,000 rpm, making it suitable for high-speed spindle applications.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore tolerance: -0.004mm to 0), ensuring minimal vibration and consistent performance in precision equipment.
7007 ACD/P4ADBD Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers requiring exceptional rigidity and accuracy
- High-Speed Machining Centers: Applications demanding both high rotational speeds and precise positioning
- Precision Instrumentation: Measuring equipment and optical systems where minimal runout is critical
- Robotics and Automation: High-precision robotic joints and positioning systems
- Aerospace Components: Guidance systems and precision mechanisms requiring reliable performance under combined loads
