7009 ACE/HCP4AL1DGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7009 ACE/HCP4AL1DGA Bearing Product Overview & Core Advantages
The 7009 ACE/HCP4AL1DGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing is designed to handle combined loads efficiently, accommodating both radial and significant axial loads in one direction. Its P4A tolerance class ensures ultra-precise rotational accuracy, while the ceramic ball and phenolic cage construction contribute to superior high-speed capabilities and reduced weight. Preloaded to Extra light / Class A, it delivers high rigidity and minimal runout, making it ideal for high-reliability, precision machinery.
7009 ACE/HCP4AL1DGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing series and size designation (45mm bore, 75mm OD). |
| ACE | Indicates a 25° contact angle and specific internal design optimized for high-speed operation. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), offering reduced weight, higher stiffness, and superior performance at high speeds. |
| P4A | Denotes an ultra-precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
| L1 | Specifies a light preload (Class A), ensuring high system rigidity and precise shaft positioning. |
| DG | Indicates the bearing is universally matchable (SU). Two bearings can be paired in a back-to-back (DB) or face-to-face (DF) arrangement to handle bidirectional axial loads. |
| A | Confirms the 25° contact angle, balancing axial and radial load capacity. |
7009 ACE/HCP4AL1DGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (46,000 rpm), lower operating temperatures, and extended service life, especially in high-speed applications.
Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction, further enhancing high-speed performance and reliability.
Universal Match Design (SU): This feature allows for simple and precise arrangement of two bearings to create a stiff, preloaded bearing set capable of supporting combined loads from any direction, simplifying assembly and improving system accuracy.
High Rigidity & Precision: The 25° contact angle and light preload provide high axial and radial stiffness, minimizing deflection under load and ensuring precise shaft guidance essential for precision machinery.
7009 ACE/HCP4AL1DGA Bearing Typical Application Areas
This high-performance bearing is ideally suited for applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- High-Speed Motors and Spindles: For CNC machinery and PCB drilling.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
