7002 CE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7002 CE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.025 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
32 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
994 lbf
Radial static load rating
434 lbf
Limiting speed
127 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:
$ 74.76
/ each
In Stock
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7002 CE/HCP4A Bearing Product Overview & Core Advantages
The 7002 CE/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single-row bearing features a 15° contact angle and is supplied with a preload, ensuring high system rigidity and precise rotational accuracy. Manufactured to P4 (ABEC-7) tolerance class, it guarantees minimal runout and superior operational consistency. Its combination of a ceramic ball and phenolic cage makes it an ideal solution for high-speed applications, offering reduced friction, lower operating temperatures, and extended service life.
7002 CE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CE | Hybrid Ceramic (Silicon Nitride) Balls | Reduced weight, lower friction, and non-conductive properties for higher speeds and longer life. |
| HC | Phenolic (Polyamide) Cage | Excellent strength-to-weight ratio, low friction, and suitability for high rotational speeds. |
| P4A | P4 (ABEC-7) Tolerance Class with Specific Running Accuracy | Guarantees ultra-precise dimensions and minimal runout for critical high-precision applications. |
7002 CE/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The application of a preload eliminates internal clearance, resulting in significantly increased system stiffness and superior positional accuracy, which is critical for machine tool spindles and precision instruments.
- Superior High-Speed Capability: The combination of ceramic balls and a lightweight phenolic cage reduces centrifugal forces and friction, enabling a very high limiting speed of 127,000 rpm. This design minimizes heat generation and power loss.
- Optimized Load Capacity: The 15° contact angle is optimized to handle combined loads, providing excellent performance for applications with significant axial loads in one direction alongside radial loads.
- Extended Service Life: Hybrid construction with ceramic balls provides enhanced durability, particularly in demanding environments, by offering better resistance to wear and a reduced risk of smearing under poor lubrication conditions.
7002 CE/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications where speed, accuracy, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles.
- High-Speed Motors and Spindles: PCB drilling spindles, dental handpieces.
- Precision Robotics: Joints and actuators requiring high positional accuracy.
- Aerospace and Defense Systems: Gyroscopes, navigation instruments.
- Semiconductor Manufacturing Equipment: Wafer handling robots, precision stages.
