71915 ACD/HCPA9ADT
Hybrid Ceramic Super Precision Bearings
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71915 ACD/HCPA9ADT Bearing Product Overview & Core Advantages
The 71915 ACD/HCPA9ADT is a precision angular contact ball bearing designed for high-performance applications. This duplex tandem (DT) matched pair is engineered to handle significant axial loads in one direction, making it ideal for demanding scenarios requiring high rigidity and precision. Its construction with a phenolic cage and ceramic balls enables superior high-speed performance and extended service life. The bearing comes preloaded and lubricated, ensuring optimal performance and reliability from installation.
71915 ACD/HCPA9ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71915 | Basic bearing series and size designation (75mm bore, 105mm OD) |
| AC | Angular Contact design with a 25° contact angle |
| D | Duplex arrangement (two bearings supplied as a set) |
| HCPA9A | High Precision tolerance class (PA9A) with preload |
| DT | Duplex Tandem mounting configuration for maximum axial load capacity in one direction |
71915 ACD/HCPA9ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement combines two bearings to provide exceptional stiffness and significantly increased axial load carrying capacity in one direction, making it suitable for applications with heavy thrust loads.
High-Speed Performance: The lightweight phenolic cage and low-density ceramic balls reduce centrifugal forces, allowing for a high limiting speed of 22,000 rpm. This construction minimizes friction and heat generation.
Precision & Accuracy: Manufactured to a PA9A tolerance class, this bearing ensures minimal runout and precise rotational accuracy, which is critical for high-speed spindles and precision machinery.
Preload & Readiness: The bearing set is supplied with a pre-applied preload and lubrication, simplifying installation and guaranteeing immediate, optimized performance with reduced setup time.
71915 ACD/HCPA9ADT Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace Systems: Gyroscopes, auxiliary power units, and flight control mechanisms.
- High-Frequency Motors and Spindles: Where extreme rotational accuracy and speed are required.
