7002 CD/P4ADBD
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 CD/P4ADBD
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 Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Heavy / Class D
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/P4ADBD Bearing Product Overview & Core Advantages
The 7002 CD/P4ADBD is a precision duplex angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. This back-to-back (DB) matched pair is preloaded to Heavy / Class D specifications, delivering superior rotational stability and stiffness. Its primary advantage lies in its ability to handle combined loads—significant radial and axial loads in both directions—simultaneously. Manufactured to P4A tolerance class, it is an ideal solution for high-precision, high-rigidity machinery where minimal runout and precise shaft positioning are critical.
7002 CD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Standard bearing series designation, with 15mm bore, 32mm OD. |
| C | 15° contact angle, optimized for carrying axial loads. |
| D | Indicates a duplex bearing (two bearings as a set). |
| P4A | High-Precision Tolerance Class, exceeding ABEC 7/ISO P4 standards for running accuracy. |
| DB | Back-to-Back Matched Arrangement. This configuration provides high moment rigidity and excellent stability under complex loads. |
7002 CD/P4ADBD Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back (DB) duplex design creates a wide, rigid support system that effectively resists moment loads and shaft deflection, ensuring precise alignment and minimal vibration.
- Superior Load Capacity: With a 15° contact angle and duplex configuration, this bearing is engineered to handle high combined radial and bidirectional axial loads simultaneously.
- Precision Performance: Manufactured to P4A tolerance class with a phenolic cage, it ensures smooth operation, low noise, and high running accuracy, making it suitable for high-speed applications up to 100,000 rpm.
- Optimized for Demanding Use: The Heavy preload (Class D) eliminates internal clearance, providing immediate responsiveness and enhanced system stiffness from startup.
7002 CD/P4ADBD Bearing Typical Application Areas
This bearing is specified for high-performance machinery where precision, speed, and rigidity are non-negotiable. Key applications include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Gearboxes
- High-Frequency Motors and Spindles
- Medical and Laboratory Equipment (e.g., Centrifuges)
- Robotic Arm Joints and Precision Actuators
