S7017 CD/P4ADBB
Sealed Super Precision Angular Contact Ball Bearings
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S7017 CD/P4ADBB Bearing Product Overview & Core Advantages
The S7017 CD/P4ADBB is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back arrangement (DB) provides superior stiffness and the ability to withstand combined loads, including significant radial and bidirectional axial loads. Manufactured to P4A tolerance class and preloaded for optimal performance, it is engineered for high-speed operation and reliable service in the most demanding precision machinery.
S7017 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7017 | Basic bearing series designation, indicating a 85mm bore, 130mm OD, and 44mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high rigidity. |
| D | Indicates the bearing is part of a duplex (matched) set. |
| P4A | Denotes an ultra-high precision tolerance class, exceeding ABEC 7 standards, for minimal runout and vibration. |
| DB | Specifies the Back-to-Back mounting arrangement, which provides high moment rigidity. |
| B | Indicates a Light preload (Class B), which minimizes deflection and ensures precise shaft positioning under operational conditions. |
S7017 CD/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex back-to-back (DB) design creates a wide, rigid support system that effectively resists moment loads and complex combined loads. This configuration, combined with the 15° contact angle, provides excellent stability and load-sharing between the two bearings in the set.
Precision & High-Speed Performance: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures smooth operation with minimal vibration and friction, contributing to its high limiting speed of 28,000 rpm. The phenolic cage is lightweight and robust, ideal for high-speed applications.
Durability & Sealed for Life: As a sealed bearing, it is pre-lubricated with grease, protecting against contamination and retaining lubrication. This makes it a maintenance-free solution for the duration of its service life within the specified temperature range of -30°C to 110°C.
S7017 CD/P4ADBB Bearing Typical Application Areas
The S7017 CD/P4ADBB is ideally suited for high-precision, high-speed machinery where rigidity and accuracy are paramount. Key applications include:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Frequency Spindles and Motors
- Precision Robotics and Automation Equipment
- Medical and Dental Equipment Spindles
- Advanced Aerospace and Defense Systems
