7009 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7009 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.2 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
9.525 mm
Ball quantity
17
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6435 lbf
Radial static load rating
5040 lbf
Limiting speed
34 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:
$ 251.26
/ each
In Stock
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7009 CD/HCP4A Bearing Product Overview & Core Advantages
The 7009 CD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. This single-row bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, making it ideal for high-speed spindles and precision machinery. Its core advantages include superior running accuracy due to its P4 (ABEC-7) tolerance class, high-speed capability enabled by its phenolic cage and ceramic balls, and availability with a factory-applied preload for immediate high-stiffness performance.
7009 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Code | Technical Meaning |
|---|---|---|
| Basic Designation | 7009 | Standard series angular contact ball bearing with 45mm bore, 75mm OD. |
| Internal Design | CD | Specifies a 15° contact angle and optimized internal geometry for high rigidity and speed. |
| Cage Type | HC | Indicates a phenolic (polyamide) cage, which is lightweight and ideal for high-speed operation. |
| Tolerance Class | P4 | Denotes a high-precision bearing with P4 (ABEC-7) dimensional and running accuracy. |
| Preload | A | Signifies that the bearing is supplied with a light preload for enhanced system stiffness. |
7009 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 15° contact angle and P4 tolerance class ensure minimal deflection and superior running accuracy, which is critical for machine tool spindles.
- High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, enabling a high limiting speed of 34,000 rpm.
- Enhanced Load Capacity: Designed as an angular contact bearing, it efficiently handles significant combined radial and axial loads.
- Optimized for Demanding Conditions: The open seal type allows for custom lubrication schemes, while the ceramic ball material offers reduced thermal expansion and increased durability in high-temperature environments.
7009 CD/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: For CNC machining centers, grinders, and lathes requiring high speed and accuracy.
- High-Speed Motors & Spindles: In applications where minimal runout and thermal stability are paramount.
- Precision Robotic Drives: Providing the necessary rigidity and responsiveness for articulated arms.
- Aerospace & Defense Systems: Including gyroscopes, radar systems, and other precision instrumentation.
