7009 ACE/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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7009 ACE/P4A Bearing Product Overview & Core Advantages
The 7009 ACE/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. This metric bearing features a 25° contact angle and is supplied with P4 (ABEC-7) tolerance class precision, making it ideal for applications demanding minimal runout and vibration. Its key advantage lies in its ability to support combined loads—handling significant radial loads alongside thrust loads in one direction—while maintaining high-speed capability up to 37,000 rpm. The phenolic cage and prelubrication contribute to its reliable performance in demanding operational conditions.
7009 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACE | 25° contact angle design | Optimized for handling combined radial and axial loads |
| P4A | P4 precision class with specific running accuracy | Superior rotational accuracy and reduced vibration for precision applications |
7009 ACE/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The 25° contact angle and optimized raceway geometry provide excellent stiffness, enabling the bearing to handle combined loads effectively with a radial dynamic load rating of 2722 lbf and static rating of 1834 lbf.
High-Speed Performance: The phenolic resin cage ensures stable operation at high rotational speeds while reducing friction and heat generation. Combined with prelubrication, this enables reliable operation up to the limiting speed of 37,000 rpm.
Precision Engineering: Manufactured to P4 tolerance class with tight dimensional controls (bore tolerance: -0.006mm to 0), this bearing delivers exceptional running accuracy essential for precision machinery.
Material Excellence: Constructed from chrome steel for both rings and balls, providing superior hardness, wear resistance, and dimensional stability across the operating temperature range of -30° to 110°C.
7009 ACE/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles requiring minimal runout
- High-Speed Motors: Electric motors and spindles operating at elevated rotational speeds
- Precision Instrumentation: Measuring equipment, optical instruments, and laboratory apparatus
- Robotics & Automation: Robot arm joints, precision positioning systems, and automated manufacturing equipment
- Aerospace Components: Guidance systems, avionics, and auxiliary power units requiring high reliability
