7015 CD/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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7015 CD/P4ADGA Bearing Product Overview & Core Advantages
The 7015 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high rigidity. Manufactured to P4A tolerance class, it delivers superior running precision. Its 15° contact angle and universal matchable (SU) design allow it to be paired in a back-to-back or face-to-face arrangement to accommodate combined loads, including significant axial loads in both directions. The open design, combined with a phenolic cage, facilitates high-speed operation, making it an ideal solution for high-performance spindles and precision machinery.
7015 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7015 | Basic bearing series and size designation | Indicates a metric, 75mm bore, 115mm OD, 40mm width bearing. |
| CD | Contact angle of 15° and universal matchable design | Optimized for combined loads and allows for flexible mounting arrangements (SU). |
| P4A | High precision tolerance class | Exceeds ABEC-7 standards, ensuring minimal runout and vibration for ultra-precise applications. |
| DGA | Preload designation: Extra Light (Class A) | Minimal preload reduces friction and heat generation, maximizing high-speed performance. |
7015 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and robust construction using chrome steel rings and balls provide high rigidity, enabling the bearing to support substantial radial and axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic cage ensures stability and low centrifugal forces at high rotational speeds, with a limiting speed of 22,000 rpm. The extra light preload (DGA) further minimizes operational torque and heat.
- Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional control on the bore, outside diameter, and width, guaranteeing exceptional running accuracy and system stability.
- Universal Matching (SU): Bearings are supplied as a matched set of 2 and are universally matchable, providing design flexibility for preload adjustment and simplified installation in duplex pairs.
7015 CD/P4ADGA Bearing Typical Application Areas
The 7015 CD/P4ADGA is engineered for high-precision, high-speed machinery. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces and imaging scanner rotors.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation instruments.
- High-Frequency Motors and Spindles.
