7015 CD/P4ADBD
7000 Series Super Precision Angular Contact Ball Bearings
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7015 CD/P4ADBD Bearing Product Overview & Core Advantages
The 7015 CD/P4ADBD is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This back-to-back (DB) matched set is preloaded to Heavy / Class D specifications, delivering superior system stiffness and rotational precision. Engineered to handle combined loads (significant radial and axial loads simultaneously), it is ideal for high-precision, high-rigidity spindles and machinery. The P4A tolerance class ensures ultra-precise running accuracy, making it a cornerstone for advanced industrial equipment.
7015 CD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Standard bearing series designation, indicating a 75mm bore, 115mm OD, and 40mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and high axial load capacity. |
| D | Indicates the bearing is part of a duplex (matched) pair. |
| P4A | Denotes an ultra-high precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
| DB | Specifies the Back-to-Back mounting arrangement, which provides high moment rigidity and excellent stability under complex loads. |
7015 CD/P4ADBD Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The back-to-back (DB) duplex arrangement creates a wide effective spread between load centers, significantly increasing the bearing system's resistance to moment loads and ensuring high rigidity.
Superior Load Capacity: The angular contact design with a 15° contact angle enables the bearing to support substantial combined radial and axial loads efficiently.
Optimized High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 22,000 rpm. The open design allows for effective lubrication management.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing guarantees minimal runout and superior rotational accuracy.
7015 CD/P4ADBD Bearing Typical Application Areas
The 7015 CD/P4ADBD is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Industrial Robotics: High-accuracy robot arm joints and rotary units.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other precision mechanisms.
