7002 FE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7002 FE/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.05 kg
Tolerance class
P4A
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
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1609 lbf
Radial static load rating
855 lbf
Limiting speed
121 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
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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7002 FE/HCP4ADGA Bearing Product Overview & Core Advantages
The 7002 FE/HCP4ADGA is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered as a Universal Matchable (SU) bearing, it is supplied in a pre-set pair, enabling simplified installation and optimal performance in back-to-back (DB) or face-to-face (DF) arrangements. Its core advantages include the ability to handle combined radial and axial loads simultaneously, superior running accuracy due to its P4A tolerance class, and high-speed capability facilitated by its phenolic cage and ceramic balls. This bearing is the ideal solution for high-rigidity, high-speed spindles and precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series and size designation. |
| FE | Indicates a Universal Matchable (SU) bearing, supplied as one of a pair for simplified mounting in pre-determined configurations. |
| HC | Hybrid Ceramic design, featuring ceramic balls and steel rings for reduced friction, higher speed, and longer service life. |
| P4A | The tolerance class, denoting very high dimensional and running accuracy exceeding ABEC 7/ISO P4 standards. |
| DGA | Contact angle designation, indicating an 18° contact angle for optimal axial load capacity and high-speed performance. |
7002 FE/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables a limiting speed of 121,000 rpm. This results in extended lubricant life and superior performance in high-speed applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at ultra-high speeds, offering excellent strength and dimensional stability.
- Preload & High Rigidity: Supplied with an Extra light (Class A) preload, this bearing provides high system rigidity, minimizes deflection under load, and ensures precise rotational accuracy.
- Universal Matchable Design (SU): This feature allows for simplified assembly of bearing pairs without the need for selective matching, ensuring consistent and predictable performance in duplex sets.
- Precision Tolerances: Manufactured to P4A tolerance class with tight bore, outside diameter, and width tolerances, guaranteeing exceptional running accuracy and system repeatability.
7002 FE/HCP4ADGA Bearing Typical Application Areas
This high-performance angular contact ball bearing is specifically engineered for demanding applications, including:
- High-Speed Machine Tool Spindles (e.g., CNC milling, grinding, and drilling)
- Precision Robotic Drives and Servo Motors
- High-Frequency Dental and Medical Handpieces
- Aerospace Instrumentation and Gyroscopes
- High-Speed Pumps and Compressors
