7009 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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7009 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The 7009 ACEGA/HCP4A is a single-row angular contact ball bearing engineered for ultra-high precision applications. Operating under P4A tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its ceramic ball construction and phenolic cage enable superior high-speed performance with a limiting speed of 46,000 rpm, while the 25° contact angle provides optimal axial load capacity. Designed as a universal matchable bearing, it can be preloaded in pairs to achieve maximum rigidity and system stability in demanding machinery.
7009 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing series with 45mm bore diameter |
| AC | Angular Contact design with 25° contact angle |
| EGA | Universal Matchable bearing (SU designation) |
| HC | Hybrid Ceramic construction with steel rings |
| P4A | Ultra-precision tolerance class with enhanced running accuracy |
7009 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear, enabling extended service life at extreme speeds.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and minimal vibration.
High-Speed Capability: The phenolic resin cage and ceramic balls work synergistically to achieve a remarkable limiting speed of 46,000 rpm, making it ideal for high-frequency spindles.
Universal Matching: As a Universal Matchable (SU) bearing, it can be precisely paired and preloaded to create high-rigidity bearing sets capable of handling combined radial and axial loads simultaneously.
Enhanced Load Capacity: With a dynamic load rating of 2722 lbf and static load rating of 1834 lbf, it delivers reliable performance under demanding operating conditions.
7009 ACEGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding spindles
- Medical Equipment: Dental handpieces and surgical drill motors
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
- High-Frequency Motors: Spindle motors and high-RPM industrial drives
