7009 FE/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7009 FE/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.48 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
18 °
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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7009 FE/P4ADBB Bearing Product Overview & Core Advantages
The 7009 FE/P4ADBB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement consists of two matched bearings, preloaded to deliver superior stiffness and precise shaft positioning. It is engineered to handle combined loads (radial and axial) simultaneously, making it ideal for high-speed, high-precision machinery. Manufactured to a P4A tolerance class, it ensures minimal runout and consistent performance in critical applications.
7009 FE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| FE | Indicates a specific internal design and manufacturing process for high-performance bearings. |
| P4A | Denotes a high precision tolerance class with very tight dimensional and running accuracy limits, superior to ABEC 7. |
| DBB | Signifies a Duplex Back-to-Back mounting arrangement. This configuration provides high moment rigidity and excellent stability. |
7009 FE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement with a light preload (Class B) creates a rigid bearing system that effectively resists moment loads and minimizes shaft deflection, ensuring precise alignment and smooth operation.
- Superior Load Capacity: The 18° contact angle is optimized to handle significant combined radial and axial loads. With a dynamic load rating of 4680 lbf and a static load rating of 3825 lbf, it offers reliable performance under strenuous conditions.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground chrome steel balls and raceways contribute to low friction and heat generation, enabling a high limiting speed of 46,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance standards with tight bore, outside diameter, and width tolerances, this bearing guarantees exceptional running accuracy and minimal vibration for critical spindles and machinery.
7009 FE/P4ADBB Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Used in PCB drilling, semiconductor manufacturing, and other precision machining equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Medical Equipment: High-speed centrifuges and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring ultra-precise rotation.
