7002 CD/P4ADFA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 CD/P4ADFA
Basic Information
System of measurement
Metric
Weight
0.06 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
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1872 lbf
Radial static load rating
1102 lbf
Limiting speed
100 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7002 CD/P4ADFA Bearing Product Overview & Core Advantages
The 7002 CD/P4ADFA is a duplex face-to-face (DF) matched pair of precision angular contact ball bearings designed for the most demanding applications. This P4A tolerance class configuration delivers exceptional running accuracy and high rigidity. The matched set is pre-loaded to an extra light (Class A) specification, making it ideal for spindles and other high-precision mechanisms requiring minimal deflection under combined loads. Its compact design and superior performance characteristics ensure high reliability in precision rotational systems.
7002 CD/P4ADFA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a duplex face-to-face (DF) matched pair. This arrangement provides high rigidity and is particularly effective for withstanding moment loads. |
| P4A | Denotes a high precision tolerance class, exceeding ABEC 7 standards. This ensures extremely tight dimensional and running accuracy for smooth, vibration-free operation. |
| DFA | Specifies a specific face-to-face duplex preload level, in this case, Extra Light (Class A). |
7002 CD/P4ADFA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement of two bearings creates a highly rigid support system capable of withstanding combined radial and axial loads from both directions, as well as moment loads.
- Precision Performance: Manufactured to P4A tolerance class with a 15° contact angle, this bearing set guarantees exceptional running accuracy, low noise, and minimal vibration, which is critical for high-speed applications.
- High-Speed Capability: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and enabling stable operation at the specified limiting speed.
- Optimal Material Selection: Constructed from chrome steel for both rings and balls, the bearing provides high fatigue life and durability. The bearings are pre-lubricated for immediate use.
7002 CD/P4ADFA Bearing Typical Application Areas
This precision matched bearing set is ideally suited for:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Rotary Tables
- High-Frequency Spindles
- Medical and Dental Equipment
- Optical and Measuring Instruments
