S7009 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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S7009 CD/P4A Bearing Product Overview & Core Advantages
The S7009 CD/P4A is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 15° contact angle and is supplied with a preload, making it ideal for applications where high stiffness and minimal axial/radial deflection are critical. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running accuracy. Its sealed design and factory-applied lubrication ensure long-term, maintenance-free operation in demanding environments.
S7009 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| C | 15° nominal contact angle | Optimized for combined loads with a higher axial load capacity. |
| D | High preload | Provides maximum system rigidity and precise shaft positioning. |
| P4A | P4 tolerance class with specific running accuracy requirements | Ensures ultra-smooth operation and high rotational precision for demanding applications. |
S7009 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The high preload (D) significantly increases bearing stiffness, reducing deflection under load and improving the dynamic response of the entire system.
- Superior Load Capacity: The 15° contact angle design enables the bearing to support substantial combined radial and axial loads simultaneously.
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 19,000 rpm.
- Sealed & Lubricated for Life: The sealed construction effectively excludes contaminants. Combined with factory-applied high-quality grease, this design offers a long, maintenance-free service life within the specified temperature range.
- Precision Engineering: Manufactured to P4 (ABEC-7) tolerance with chrome steel rings and balls, guaranteeing consistent high-precision performance and extended durability.
S7009 CD/P4A Bearing Typical Application Areas
This bearing is engineered for high-precision, high-speed machinery where accuracy and rigidity are paramount. Typical applications include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and other precision machine tools.
- High-Frequency Motors: Spindle motors and other high-speed electric motors.
- Precision Instrumentation: Medical devices, optical scanners, and measuring equipment.
- Robotics: High-accuracy joints and arm assemblies.
