7009 CDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7009 CDGB/P4A Bearing Product Overview & Core Advantages
The 7009 CDGB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to P4A tolerance class, it offers superior dimensional stability and running accuracy. This bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets to achieve optimal stiffness and performance. Its light preload (Class B) ensures minimal deflection under operational stresses, making it an ideal choice for high-speed and high-precision machinery where reliability is paramount.
7009 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | A 15° contact angle and specific internal design for high rigidity and universal matching capability. |
| GB | Indicates a light preload (Class B) applied to the bearing, reducing deflection and enhancing system stability. |
| P4A | Denotes a high-precision tolerance class with very tight limits on bore, outside diameter, and width tolerances for superior running accuracy. |
7009 CDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The optimized 15° contact angle and phenolic cage design enable the bearing to support significant combined loads (radial and axial) simultaneously. The universal matchable design allows for the creation of preloaded sets from single bearings, dramatically increasing system stiffness.
High-Speed Performance: The lightweight phenolic cage and precision-ground chrome steel components contribute to a high limiting speed of 46,000 rpm, making it suitable for demanding high-speed applications.
Precision and Longevity: Manufactured to P4A tolerance class, this bearing ensures minimal vibration and consistent performance. The open design, when properly lubricated, allows for efficient heat dissipation and a wide operating temperature range from -30°C to 110°C.
7009 CDGB/P4A Bearing Typical Application Areas
The 7009 CDGB/P4A is ideally suited for high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Instrumentation
