7009 ACE/HCP4AH1DT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7009 ACE/HCP4AH1DT
Basic Information
System of measurement
Metric
Weight
0.45 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.004mm to 0
Width
32 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3668 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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Product Overview and Core Advantages
The 7009 ACE/HCP4AH1DT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) matched set configuration enables the bearing to handle significant axial loads in one direction with high rigidity. Manufactured to P4A tolerance class, it offers superior running accuracy and dimensional stability. The combination of a ceramic ball material and phenolic cage contributes to its high-speed capabilities and reduced weight, making it ideal for high-speed spindles and other precision machinery.
7009 ACE/HCP4AH1DT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing series and size designation (45mm bore, 75mm OD). |
| ACE | Internal design code specifying a 25° contact angle and optimized internal geometry. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Specifies a high-precision tolerance class with enhanced dimensional and running accuracy. |
| H1 | Preload designation for the matched set. |
| DT | Identifies the Duplex Tandem arrangement, where two bearings are mounted to increase axial load capacity in one direction. |
Structural Features and Performance Benefits
- High Rigidity and Load Capacity: The duplex tandem arrangement and 25° contact angle provide superior stiffness and enable the bearing to support high axial loads in one direction, making it suitable for applications with demanding thrust requirements.
- High-Speed Performance: The lightweight phenolic resin cage and hybrid ceramic balls (Silicon Nitride) significantly reduce centrifugal forces, allowing for a high limiting speed of 46,000 rpm. The ceramic balls also offer lower thermal expansion and improved lubrication efficiency.
- Precision Operation: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining accuracy in high-speed machining and precision instruments.
- Optimized Lubrication: The bearing comes pre-lubricated for immediate operation, suitable for its specified temperature range of -30°C to 110°C.
7009 ACE/HCP4AH1DT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles requiring high precision and rigidity.
- Precision Instrumentation: Applications in medical devices, optical scanners, and coordinate measuring machines.
- High-Speed Motors: Electric motors and spindles in the aerospace and semiconductor manufacturing industries.
- Robotics: High-accuracy robotic arm joints and precision actuators.
