7009 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7009 ACE/HCP4A Bearing Product Overview & Core Advantages
The 7009 ACE/HCP4A is a high-precision, single-row Angular Contact Ball Bearing engineered for demanding applications. Its defining feature is the 25° contact angle, optimized to support significant combined loads—simultaneously handling radial and one-directional axial forces. Manufactured to the exacting P4 (ABEC-7) tolerance class, it guarantees exceptional running accuracy and rotational precision. The bearing is preloaded and comes lubricated from the factory, ensuring immediate high performance, superior rigidity, and reliable operation in high-speed scenarios, making it an ideal choice for precision machinery.
7009 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Standard bearing series number, indicating a 45mm bore, 75mm OD, and 16mm width. |
| ACE | Designates a 25° contact angle and specific internal geometry optimized for high-speed operation and rigidity. |
| HC | Indicates the use of Hybrid Ceramic components (Ceramic balls with a steel ring). |
| P4 | Specifies the tolerance class equivalent to ABEC-7, denoting very high precision. |
| A | Denotes that the bearing is supplied with a preload for enhanced stiffness. |
7009 ACE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and operating temperature, enabling higher limiting speeds (45,000 rpm) and providing electrical insulation. This construction also offers superior durability and a longer service life.
- Phenolic Resin Cage: The lightweight and robust phenolic cage provides excellent dimensional stability and guidance at high speeds, contributing to smooth operation and reduced vibration.
- High Rigidity & Load Capacity: The 25° contact angle and preload work in tandem to deliver high system rigidity, effectively managing combined radial and axial loads (Dynamic: 2722 lbf, Static: 1834 lbf).
- Precision & Reliability: Manufactured to P4 tolerance, this bearing ensures minimal runout and consistent performance, which is critical for applications requiring high rotational accuracy.
- Factory Lubrication: Comes pre-lubricated for immediate use, suitable for the specified temperature range of -30°C to 110°C.
7009 ACE/HCP4A Bearing Typical Application Areas
This high-performance angular contact ball bearing is ideally suited for applications where high speed, high precision, and high rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- High-Frequency Motors & Spindles: Electric vehicle motors, CNC router spindles.
- Precision Robotics: Joints and arm assemblies requiring high accuracy and responsiveness.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units.
- Medical Equipment: High-speed dental handpieces, centrifuge rotors.
