7009 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7009 CB/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
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2151 lbf
Radial static load rating
1620 lbf
Limiting speed
48 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:
$ 251.34
/ each
In Stock
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7009 CB/HCP4A Bearing Product Overview & Core Advantages
The 7009 CB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing features a 15° contact angle and is supplied with a preload, making it ideal for setups where minimal axial and radial deflection under load is critical. Its construction with ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life, positioning it as a superior solution for high-speed and high-reliability machinery.
7009 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| CB | Specific internal clearance and preload class | Provides controlled preload for enhanced system rigidity and precise rotational performance. |
| HCP4A | Hybrid Ceramic, Precision P4 (ABEC-7) tolerance, Lubricated | Indicates a hybrid bearing with ceramic balls for superior speed and life, manufactured to P4 precision tolerance, and comes pre-lubricated. |
7009 CB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 15° contact angle and applied preload (CB) work in tandem to significantly increase system stiffness, minimizing deflection under combined radial and axial loads.
- Enhanced High-Speed Capability: The combination of silicon nitride ceramic balls and a lightweight phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 48,000 rpm.
- Superior Durability and Life: Ceramic balls are harder, lighter, and more resistant to wear and corrosion than steel, leading to a dramatically extended bearing service life, especially in challenging environments.
- Precision Operation: Manufactured to P4 (ABEC-7) tolerance class, this bearing ensures extremely tight dimensional and running accuracy, which is essential for applications requiring minimal vibration and runout.
7009 CB/HCP4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles for CNC milling and grinding machines
- High-frequency Spindles in PCB drilling and routing equipment
- Precision Robotic Arms and joints
- High-speed Dental Handpieces
- Advanced Aerospace instrumentation and auxiliary systems
