7015 ACD/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
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7015 ACD/HCP4ADBB Bearing Product Overview & Core Advantages
The 7015 ACD/HCP4ADBB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and high-speed performance. This matched set, arranged in a Back-to-Back (DB) configuration, is preloaded to Light / Class B standards, ensuring high running accuracy and minimal axial and radial runout. Its core advantage lies in its ability to support combined loads (radial and axial) simultaneously with high stability. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, making it ideal for high-reliability, high-precision machinery.
7015 ACD/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7015 | Basic bearing series, defining the bearing dimensions (75mm bore, 115mm OD, 40mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (two single bearings supplied as a matched set). |
| HC | Hybrid Ceramic, indicating the use of ceramic balls. |
| P4A | High precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DBB | Duplex Back-to-Back arrangement. This configuration provides high moment rigidity and is optimal for withstanding overturning moments. |
7015 ACD/HCP4ADBB 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's resistance to moment loads and ensuring exceptional system rigidity.
Superior Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously. With a high dynamic load rating of 18,135 lbf, it is built for demanding applications.
Enhanced High-Speed Performance: The combination of low-density ceramic balls and a lightweight, robust phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 28,000 rpm. This makes it a true high-speed bearing.
Precision & Longevity: Manufactured to a P4A tolerance class, this bearing guarantees high running accuracy. The hybrid ceramic construction offers increased durability, reduced wear, and extended service life compared to all-steel bearings, especially in challenging environments.
7015 ACD/HCP4ADBB Bearing Typical Application Areas
This high-precision, high-speed duplex bearing is ideally suited for advanced machinery where accuracy, rigidity, and speed are critical. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Where extreme rotational speeds are required.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
