7009 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7009 ACB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.25 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.007mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2034 lbf
Radial static load rating
1530 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 251.63
/ each
In Stock
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7009 ACB/HCP4A Bearing Product Overview & Core Advantages
The 7009 ACB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is distinguished by its ceramic balls and P4 (ABEC-7) tolerance class, ensuring superior running accuracy and minimal vibration. Its core advantages include the ability to accommodate high combined loads (radial and axial) simultaneously, facilitated by a 25° contact angle. The combination of a phenolic cage and ceramic balls enables outstanding high-speed performance, with a limiting speed of 43,000 rpm. Preloaded and lubricated from the factory, it is a ready-to-install, high-reliability component for critical machinery.
7009 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing designation indicating a metric series bearing with a 45 mm bore and 75 mm outside diameter. |
| ACB | Signifies a specific internal design with a 25° contact angle and preload applied for high rigidity and precise shaft positioning. |
| HCP4A | A compound suffix. HC denotes Hybrid Ceramic construction (steel rings with ceramic balls). P4 indicates a P4 tolerance class (ABEC-7), specifying very tight dimensional and running accuracy. A confirms the 25° contact angle. |
7009 ACB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The use of ceramic balls with steel rings significantly reduces weight and centrifugal forces, leading to lower operating temperatures and dramatically enhanced high-speed capabilities. This construction also offers improved resistance to wear and electrical arcing.
- Phenolic Resin Cage: The lightweight and robust phenolic cage is ideal for high-speed applications, providing excellent dimensional stability and low friction under high centrifugal forces.
- Precision & Rigidity: Manufactured to P4 tolerance and supplied with a preload, this bearing delivers exceptional running accuracy, minimal run-out, and high system rigidity, which is critical for minimizing deflection under load.
- Optimized Load Capacity: The 25° contact angle is optimally designed to handle significant combined radial and axial loads efficiently, making it suitable for applications with complex loading conditions.
- Ready-to-Install: The bearing is pre-lubricated, simplifying installation and ensuring immediate, reliable operation within the specified temperature range of -30°C to 110°C.
7009 ACB/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for advanced machinery where speed, accuracy, and reliability are paramount. Key application fields include:
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and drilling where high rotational speed and rigidity are required.
- Precision Robotics: In high-precision robotic arms and joints demanding low friction and high positional accuracy.
- Advanced Medical Equipment: Used in high-speed dental handpieces and imaging device rotors.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and other critical rotating assemblies.
- High-Speed Motors and Turbines: Where extreme rotational speeds and reliability are essential.
