7002 CE/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 CE/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.056 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
1609 lbf
Radial static load rating
855 lbf
Limiting speed
127 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
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
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7002 CE/P4ADBB Bearing Product Overview & Core Advantages
The 7002 CE/P4ADBB is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. This matched duplex pair in back-to-back (DB) configuration provides superior stiffness and stability when subjected to combined radial and axial loads. Manufactured to P4A tolerance class with a light preload (Class B), it delivers optimal running precision and is ideally suited for high-speed spindles and precision machinery.
7002 CE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series, 15 mm bore, 32 mm OD. |
| CE | Specific internal design and contact angle (15°). |
| P4A | High-Precision Tolerance Class for exceptional dimensional and running accuracy. |
| DBB | Duplex Back-to-Back arrangement. Provides high moment rigidity. |
7002 CE/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a pre-stressed system that significantly increases axial and radial stiffness, making it resistant to operational deflection and ideal for applications with overturning moments.
- Superior Precision: Manufactured to ABEC 7 / P4A precision class with tight dimensional tolerances on bore, OD, and width, ensuring minimal runout and vibration for smooth, accurate operation.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the 15° contact angle and light preload contribute to lower heat generation, enabling a high limiting speed of 127,000 rpm.
- High Load Capacity: The angular contact design efficiently handles combined radial and axial loads simultaneously. The use of high-grade chrome steel for rings and balls ensures durability under dynamic loads.
7002 CE/P4ADBB Bearing Typical Application Areas
This bearing is engineered for high-demand applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Internal and external grinding machines.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Medical Equipment: High-speed dental handpieces and surgical tools.
- Robotics: Precision joints and actuators requiring high stiffness.
