7002 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 CD/P4ADBC
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
Moderate / Class C
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 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7002 CD/P4ADBC is a precision duplex angular contact ball bearing arranged in a back-to-back (DB) configuration. Engineered for the most demanding applications, this matched pair delivers exceptional high rigidity and stability under combined loads. With its P4A tolerance class and moderate preload (Class C), it is specifically designed for high-precision spindles and systems requiring superior running accuracy and minimal deflection.
7002 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a duplex bearing with a specific internal radial clearance and preload when mounted. |
| P4A | Denotes an ultra-precision tolerance class with enhanced dimensional and running accuracy requirements, superior to ABEC 7. |
| DB | Specifies the back-to-back mounting arrangement of the two bearings, which provides high moment stiffness. |
7002 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) design creates a wide effective spread, significantly increasing system rigidity and resistance to moment loads, making it ideal for applications where shaft deflection must be minimized.
- Superior Precision: Manufactured to P4A tolerance class with a 15° contact angle, this bearing ensures exceptional running accuracy, low noise, and minimal vibration for high-speed, high-precision operations.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed of 100,000 rpm. The bearings are pre-lubricated for immediate operation.
- Robust Load Capacity: With a dynamic load rating of 1872 lbf and a static load rating of 1102 lbf, this bearing set is capable of handling significant combined radial and axial loads.
7002 CD/P4ADBC Bearing Typical Application Areas
This precision bearing set is critical in high-performance machinery, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling applications.
- Precision Rotary Systems: Used in industrial robots, rotary tables, and indexing heads.
- High-Frequency Motors & Spindles: Ideal for the main spindles of PCB drilling machines and other high-RPM electric motors.
- Medical and Laboratory Equipment: Found in centrifuges and other devices requiring ultra-precise, quiet, and reliable rotation.
