7009 ACE/HCP4AQBCA
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/HCP4AQBCA Bearing Product Overview & Core Advantages
The 7009 ACE/HCP4AQBCA is a high-precision quadruplex matched set of angular contact ball bearings designed for the most demanding applications. This P4A tolerance class set, arranged in a Back-to-Back (QBC) configuration, delivers exceptional system rigidity and runout accuracy. Its core advantages include the ability to handle significant combined loads (radial and axial), superior high-speed performance enabled by a phenolic cage and ceramic balls, and outstanding operational stability due to the preloaded matched set design.
Model Code Breakdown
- 7009: Basic series number, indicating a 45mm bore, 75mm OD.
- ACE: Internal design code specific to the manufacturer, signifying optimized internal geometry and performance characteristics.
- HC: Denotes Hybrid Ceramic construction, featuring steel rings and ceramic balls.
- P4A: Indicates a super-precision tolerance class exceeding ABEC 7, ensuring minimal running noise and vibration.
- QBC: Specifies the bearing arrangement as a Quadruplex (4 bearings) matched set in a Back-to-Back configuration.
7009 ACE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Accuracy: The quadruplex back-to-back arrangement creates a highly rigid bearing system that effectively resists overturning moments, making it ideal for precision spindles. The P4A precision grade guarantees tight dimensional and running accuracy.
Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density, hard ceramic balls reduces centrifugal forces, enabling a high limiting speed of 46,000 rpm. This hybrid design also minimizes heat generation.
Enhanced Load Capacity and Longevity: The 25° contact angle is optimized for carrying substantial axial loads in combination with radial loads. Ceramic balls are electrically resistant, harder, and smoother than steel, leading to reduced wear, extended lubricant life, and higher dynamic load ratings.
Pre-optimized System Performance: As a factory-matched set with extra light preload, the bearings are supplied ready to install, ensuring consistent, predictable performance and simplifying the assembly process for complex machine tools.
7009 ACE/HCP4AQBCA Bearing Typical Application Areas
This high-performance bearing set is engineered for ultra-precise, high-speed machinery, including:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes.
- High-Frequency Motors and Spindles: Where maximum rotational accuracy and speed are critical.
- Precision Robotics: Arm joints and rotary axes requiring high rigidity and positional accuracy.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and other critical navigation or targeting components.
