7009 CEGA/HCP4AH1
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7009 CEGA/HCP4AH1
Basic Information
System of measurement
Metric
Weight
0.22 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
16 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
2925 lbf
Radial static load rating
1912 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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7009 CEGA/HCP4AH1 Bearing Product Overview & Core Advantages
The 7009 CEGA/HCP4AH1 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and speed capability. This single-row bearing features a 15° contact angle and is supplied with a pre-applied lubricant, making it ready for immediate use in high-performance systems. Its core advantages include superior high-speed performance enabled by its phenolic cage and ceramic balls, along with P4A super-precision tolerance for minimal runout and vibration. It is Universal Matchable (SU), allowing for precise preload control when mounted in pairs or sets.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7009 | Basic bearing series and size designation (45mm bore, 75mm OD). |
| CE | Enhanced internal design for improved performance and high-speed capability. |
| GA | Indicates a specific preload level (Extra light / Class A). |
| HCP4A | Defines the tolerance class (P4A, a super-precision grade) and internal clearance. |
| H1 | Signifies the bearing is part of a universally matchable set of 3 bearings. |
7009 CEGA/HCP4AH1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The combination of ceramic balls and chrome steel rings reduces centrifugal forces, lowers operating temperature, and enables a limiting speed of 46,000 rpm. This design also offers electrical insulation and extended service life.
- Phenolic Resin Cage: The lightweight and robust phenolic cage provides excellent dimensional stability and low friction at high speeds, contributing to smooth operation and reduced vibration.
- Super-Precision P4A Tolerance: Manufactured to the strictest dimensional and running accuracy standards, this bearing ensures minimal radial and axial runout, which is critical for applications requiring high positional accuracy.
- Optimized Load Capacity: With a dynamic load rating of 2925 lbf and a static load rating of 1912 lbf, the bearing is capable of handling significant combined (radial and axial) loads.
- Universal Matching (SU): This feature allows any bearing from the matched set to be mounted with any other, simplifying installation and achieving the desired preload for maximum system rigidity.
7009 CEGA/HCP4AH1 Bearing Typical Application Areas
This precision bearing is ideally suited for high-speed, high-accuracy machinery, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and lathes requiring high rigidity and speed.
- High-Frequency Motors and Spindles: Used in applications where high rotational speeds are paramount.
- Precision Instrumentation: For medical devices, optical scanners, and coordinate measuring machines.
- Aerospace & Defense Systems: In gyroscopes, radar systems, and other critical components demanding reliability and precision.
