7017 CD/P4ADFC
7000 Series Super Precision Angular Contact Ball Bearings
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7017 CD/P4ADFC Bearing Product Overview & Core Advantages
The 7017 CD/P4ADFC is a precision duplex angular contact ball bearing configured in a Face-to-Face (DF) arrangement. Engineered to the exacting P4A tolerance class, this matched pair is designed for applications demanding exceptional rotational accuracy and high system rigidity. Its primary advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and thrust loads in both directions. The moderate preload (Class C) ensures consistent performance, minimizes deflection, and enhances operational stability, making it an ideal choice for high-precision, high-reliability machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7017 | Basic bearing series and size designation (85mm bore, 130mm OD, 44mm width). |
| CD | Specifies a duplex face-to-face (DF) arrangement with a specific contact angle and preload. |
| P4A | Indicates an ultra-high precision tolerance class, exceeding ABEC 7/ISO P4 standards for superior running accuracy. |
| DF | Confirms the Face-to-Face mounting configuration of the matched pair. |
| C | Denotes the moderate preload level applied to the bearing set. |
7017 CD/P4ADFC Bearing Structural Features & Performance Benefits
High Rigidity and Stability: The duplex face-to-face (DF) arrangement creates a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise alignment and positioning under operational stresses.
Superior Load Capacity: With a 15° contact angle and a dynamic load rating of 24,975 lbf, this bearing is optimized to handle substantial combined radial and axial loads from both directions, providing versatile load-carrying capability.
High-Speed Capability: The lightweight and robust phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 28,000 rpm, making it suitable for demanding high-speed applications.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width, this bearing guarantees exceptional running accuracy, low vibration, and smooth operation.
Optimized for Performance: The bearings are pre-lubricated and operate effectively within a temperature range of -30°C to 110°C. The open seal type allows for optimal re-lubrication and heat dissipation in controlled environments.
7017 CD/P4ADFC Bearing Typical Application Areas
The 7017 CD/P4ADFC is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy.
- Precision Gearboxes: In industrial robotics and automation systems.
- High-Frequency Motors and Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Medical and Laboratory Equipment: Such as high-speed centrifuges and imaging devices.
- Aerospace Actuation Systems: Where reliable performance under combined loads is critical.
