S7017 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7017 CB/P4A Bearing Product Overview & Core Advantages
The S7017 CB/P4A is a single-row angular contact ball bearing designed for applications demanding high precision and high-speed operation. Engineered to a P4 (ABEC-7) tolerance class, it offers exceptional dimensional accuracy and running precision. Its key advantage lies in its ability to accommodate combined loads—simultaneously supporting significant radial loads and axial loads in one direction. The bearing comes preloaded and lubricated from the factory, ensuring immediate, reliable performance and simplifying installation in high-rigidity, precision spindle assemblies and other critical machinery.
S7017 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Benefit |
|---|---|---|
| S | Stainless Steel (AISI 440C) | Provides enhanced corrosion resistance. |
| 7017 | Standard Bearing Series & Size Designation | Defines the core dimensions: 85mm bore, 130mm OD, 22mm width. |
| CB | Specific internal clearance and preload | Indicates a moderate preload for optimal stiffness and running accuracy in high-speed applications. |
| P4A | Tolerance Class (equivalent to ABEC-7) | Denotes super-precision manufacturing tolerances for minimal runout and vibration, essential for high-performance spindles. |
S7017 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 15° contact angle and factory-applied CB preload work in tandem to provide superior axial and radial stiffness. This minimizes deflection under load, which is critical for maintaining accuracy in machine tool spindles and other precision equipment.
- Optimized for High-Speed Operation: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel balls and raceways ensure smooth, low-friction rotation. This combination enables the bearing to achieve its high limiting speed of 13,000 rpm.
- Robust Load Capacity: With a dynamic load rating of 6075 lbf and a static load rating of 5310 lbf, this bearing is engineered to handle demanding combined load conditions reliably over a long service life.
- Sealed and Lubricated for Life: As a sealed unit, it is protected from contamination. The factory-applied lubrication is suitable for the specified temperature range (-30°C to 110°C), making it a maintenance-free solution for many applications.
S7017 CB/P4A Bearing Typical Application Areas
The S7017 CB/P4A is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- High-Frequency Motors and Spindles: Motors for PCB drilling and other high-RPM applications.
- Medical and Dental Equipment: High-speed handpieces and imaging devices.
- Aerospace Instrumentation: Gyroscopes and other precision navigation systems.
