S7009 FE/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7009 FE/P4ADBA Bearing Product Overview & Core Advantages
The S7009 FE/P4ADBA is a precision duplex back-to-back angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched set bearing features an extra light preload (Class A) and a P4A tolerance class, making it ideal for high-speed spindles and other precision machinery. Its duplex DB arrangement provides superior stiffness and the ability to withstand combined radial and axial loads from both directions simultaneously, ensuring reliable performance in the most demanding operational conditions.
S7009 FE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| FE | Indicates the bearing is pre-lubricated with grease. |
| P4A | Denotes a high precision tolerance class, exceeding ABEC 7 standards, for minimal runout and vibration. |
| DB | Specifies the Duplex Back-to-Back mounting arrangement of the matched set. |
| A | Signifies the extra light preload applied to the bearing set, optimizing it for high-speed operation. |
S7009 FE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) configuration creates a rigid moment-resisting system, significantly increasing operational stiffness. This design enables the bearing to effectively handle combined loads and moments, making it suitable for applications with high overturning forces.
- Superior Precision & High-Speed Capability: Manufactured to P4A tolerance class with an 18° contact angle and a lightweight phenolic cage, this bearing ensures smooth operation with minimal vibration at high rotational speeds, with a limiting speed of 41,000 rpm.
- Optimized for Long-Term Performance: The bearings are sealed and pre-lubricated with grease (FE), providing protection against contamination and ensuring long service life without the need for immediate re-lubrication. The use of high-grade chrome steel for rings and balls ensures durability and wear resistance.
S7009 FE/P4ADBA Bearing Typical Application Areas
The S7009 FE/P4ADBA is engineered for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Aerospace & Defense Instrumentation
