7009 CEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7009 CEGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. Engineered with P4A tolerance class and extra light preload (Class A), this bearing delivers superior rotational precision and minimal running torque. Its optimized 15° contact angle provides excellent performance under combined radial and axial loads, making it ideal for high-speed spindles and precision machinery where rigidity and positioning accuracy are critical.
7009 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing designation (45mm bore, 75mm OD, 16mm width) |
| CE | Enhanced internal design for optimized load distribution |
| GA | Light preload group designation |
| P4A | Ultra-precision tolerance class with enhanced running accuracy |
Structural Features and Performance Benefits
Precision Engineering: Manufactured to P4A tolerance standards with bore and outside diameter tolerances of -0.004mm to 0, ensuring exceptional dimensional stability and running accuracy.
High-Speed Capability: Features a phenolic resin cage that reduces centrifugal forces and friction, enabling operation at limiting speeds up to 46,000 rpm while maintaining thermal stability.
Superior Load Capacity: With a radial dynamic load rating of 2925 lbf and static load rating of 1912 lbf, the bearing handles significant combined loads while maintaining precision.
Universal Matching Design: Designed as Universal Matchable (SU) bearings that can be arranged in sets of three for optimal preload control and stiffness in multi-bearing configurations.
Premium Materials: Constructed from chrome steel for rings and balls, providing excellent wear resistance and durability under demanding operating conditions.
7009 CEGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles - High-speed milling, grinding, and turning centers requiring precision and rigidity
- Precision Instrumentation - Measuring equipment, optical systems, and laboratory instruments
- High-Speed Motors - Servo motors, spindle motors, and other high-RPM applications
- Aerospace Components - Guidance systems, actuators, and precision mechanisms
- Medical Equipment - Dental handpieces, surgical tools, and diagnostic imaging systems
