7009 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7009 CE/HCP4ADBA
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
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4680 lbf
Radial static load rating
3825 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 316.96
/ each
In Stock
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7009 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 7009 CE/HCP4ADBA is a duplex back-to-back angular contact ball bearing engineered for applications demanding high precision and exceptional rigidity. This P4A tolerance class bearing features a ceramic ball and phenolic cage construction, enabling superior high-speed performance up to 46,000 rpm. Its DB matched arrangement and 15° contact angle are optimized to handle significant combined radial and axial loads simultaneously, making it ideal for ultra-precise, high-stiffness positioning systems.
7009 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| CE | 15° Contact Angle | Optimized for high-speed operation with balanced load capacity. |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Reduced friction, lower operating temperature, and extended service life at high speeds. |
| P4A | High Precision Tolerance Class | Extremely tight dimensional and running accuracy for applications requiring minimal runout. |
| DB | Duplex Back-to-Back Arrangement | Provides high moment rigidity and can sustain axial loads in both directions. |
| A | Extra Light Preload | Minimizes bearing deflection under load while maintaining smooth, low-torque operation. |
7009 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- Superior Rigidity & Load Capacity: The duplex back-to-back (DB) configuration creates a highly rigid bearing system that effectively resists moment loads. This setup, combined with the 15° contact angle, provides excellent capability for handling combined radial and axial loads.
- Exceptional High-Speed Performance: The hybrid ceramic design with silicon nitride balls significantly reduces centrifugal forces and friction, while the phenolic resin cage offers excellent strength-to-weight ratio and smooth operation at the limiting speed of 46,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with extremely tight bore and outside diameter tolerances (0 to -0.004mm), this bearing ensures minimal runout and vibration for ultra-precise applications.
- Optimized for Precision Systems: The extra light preload (Class A) minimizes axial and radial play without introducing excessive friction, making it ideal for applications requiring high positional accuracy and rapid response.
7009 CE/HCP4ADBA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: CNC machining centers, grinding spindles, and precision milling applications
- Precision Robotics: Robot arm joints, rotary actuators, and precision positioning systems
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and radar positioning mechanisms
- Medical Equipment: High-speed dental handpieces, laboratory automation, and imaging system rotors
- Semiconductor Manufacturing: Wafer handling robots, precision stages, and inspection equipment
