7000 CD/P4ADBB
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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7000 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7000 CD/P4ADBB is a metric duplex angular contact ball bearing designed for high-precision applications requiring exceptional rigidity and accuracy. This matched pair in a back-to-back (DB) arrangement is preloaded to Class B (Light), delivering superior rotational stability and stiffness. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously, making it an ideal choice for high-speed spindles and precision machinery where minimal deflection and high running accuracy are critical.
7000 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7000 | Basic bearing series, defining the core dimensions (10mm bore, 26mm OD, 16mm width). |
| C | Designates a 15° contact angle, optimized for high-speed operation and axial load capacity. |
| D | Indicates the bearing is part of a duplex (matched) set. |
| P4A | Specifies a high-precision tolerance class, exceeding standard ABEC 7/ISO P4 levels for enhanced running accuracy. |
| DB | Denotes the Back-to-Back mounting arrangement, providing high moment rigidity and excellent stability under complex loads. |
| B | Specifies the Light preload level applied to the matched set, reducing axial and radial play for precise positioning. |
7000 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) configuration creates a wide, rigid support system that effectively resists moment loads and shaft misalignment, ensuring exceptional operational stability.
Superior Load Capacity: With a 15° contact angle and duplex pairing, this bearing set is engineered to handle significant combined radial and axial loads in both directions, making it suitable for demanding applications.
Optimized High-Speed Performance: The phenolic resin cage offers low friction and excellent high-speed capability, contributing to the bearing's high limiting speed of 185,000 rpm. The light preload further enhances high-speed stability.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing guarantees high running accuracy and consistent performance in precision assemblies.
7000 CD/P4ADBB Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Machine Mandrels
- High-Frequency Electric Motors
- Medical and Dental Handpiece Drives
- Aerospace Instrumentation and Gyroscopes
- High-Precision Robotic Joints and Actuators
