7009 CE/P4ALDT
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7009 CE/P4ALDT
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
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 Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
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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7009 CE/P4ALDT Bearing Product Overview & Core Advantages
The 7009 CE/P4ALDT is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex tandem (DT) matched set features a P4A super-precision tolerance class and is preloaded, enabling it to handle significant combined loads (radial and axial) with high stability. Its optimized design, including a phenolic cage and a 15° contact angle, makes it an ideal solution for high-speed spindles and other high-performance machinery where uncompromising precision and reliability are paramount.
7009 CE/P4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| C | 15° Contact Angle | Optimized for high-speed operation and moderate axial load capacity. |
| E | Reinforced Design | Increased load rating through optimized internal geometry and more/larger balls. |
| P4A | Super Precision Tolerance Class | Guarantees extremely tight running accuracy for superior performance in precision applications. |
| L | Light Preload | Eliminates internal clearance, enhancing rigidity and minimizing shaft runout. |
| DT | Duplex Tandem Matched Set | Two bearings are manufactured and selected to be mounted in tandem to increase axial load capacity in one direction. |
7009 CE/P4ALDT Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The duplex tandem arrangement and light preload (L) create an exceptionally stiff bearing system. The reinforced design (E) with 21 balls increases the dynamic and static load ratings, allowing it to withstand heavy combined loads effectively.
- Superior High-Speed Performance: The phenolic cage is lightweight and possesses excellent slip properties, contributing to lower friction and stable operation at the high limiting speed of 46,000 rpm. The 15° contact angle is also favorable for high-speed applications.
- Precision and Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal dimensional variation and superior running accuracy, which is critical for applications requiring high positional repeatability.
- Optimized for Performance: The open seal type allows for customized lubrication schemes, while the chrome steel rings and balls provide high durability and long service life under demanding conditions.
7009 CE/P4ALDT Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications demanding the highest levels of accuracy and surface finish.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Industrial Pumps and Compressors: For shafts requiring precise axial positioning and high rigidity.
