7007 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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7007 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7007 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back arrangement is preloaded to provide high rigidity and stable running characteristics, making it ideal for supporting combined loads (radial and axial) in both directions. Manufactured to P4A tolerance class, it ensures superior running accuracy and is optimized for high-speed operation in demanding industrial environments.
7007 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series, indicating a 35mm bore, 62mm OD, and 28mm width. |
| CD | Duplex arrangement in a Back-to-Back (DB) configuration. |
| P4A | High precision tolerance class (equivalent to ABEC 7), with enhanced dimensional and running accuracy specifications. |
| DBC | Indicates a specific moderate preload (Class C) applied to the matched set. |
7007 CD/P4ADBC Bearing Structural Features & Performance Benefits
Optimized Duplex Design: The back-to-back (DB) arrangement creates a wide effective spread, significantly increasing moment rigidity and operational stability. This configuration is exceptionally effective at handling combined radial and axial loads from both directions.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces and enabling higher limiting speeds. The 15° contact angle provides an optimal balance between axial load capacity and speed performance.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances on all critical surfaces, ensuring minimal runout and vibration for superior positioning accuracy.
Robust Construction: Made from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life under demanding conditions.
7007 CD/P4ADBC Bearing Typical Application Areas
This precision duplex bearing is specifically engineered for high-performance applications including:
- Machine Tool Spindles: For milling, grinding, and turning centers requiring high rigidity and accuracy.
- High-Speed Machining Centers: Where precise positioning and thermal stability are critical.
- Precision Grinding Spindles: Demanding minimal runout and vibration.
- Industrial Pumps & Compressors: For applications with significant axial and radial load components.
- Robotic Arm Joints & Precision Gearboxes: Where compact design and high stiffness are essential.
