7002 ACD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 ACD/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
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1814 lbf
Radial static load rating
1046 lbf
Limiting speed
95 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 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7002 ACD/P4ADBC is a precision duplex pair of Angular Contact Ball Bearings in a Back-to-Back (DB) arrangement, pre-matched for immediate installation. This configuration is engineered to provide exceptional high rigidity and stability, making it ideally suited for applications requiring high precision and reliability. Its primary advantage lies in its ability to withstand combined loads—significant radial loads and axial loads in both directions—simultaneously. Manufactured to a P4A tolerance class, it delivers superior running accuracy for demanding operational environments.
7002 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series, defining the standard dimensions: 15mm bore, 32mm OD, 18mm width. |
| A | Denotes a 25° contact angle, optimized for carrying higher axial loads. |
| C | Specifies a Moderate Preload (Class C), which enhances system stiffness and minimizes axial and radial runout. |
| D | Indicates the bearings are supplied as a Duplex pair. |
| P4A | Signifies a high-precision tolerance class with enhanced running accuracy requirements. |
| DB | Defines the Back-to-Back arrangement, which provides high moment rigidity and a widely separated load center. |
7002 ACD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex Back-to-Back (DB) arrangement and moderate preload (C) work in concert to create an exceptionally stiff bearing system, effectively resisting moment loads and minimizing deflection under operation.
- Superior Load Capacity: The 25° contact angle is specifically designed to handle substantial combined radial and axial loads from both directions, a hallmark of angular contact ball bearings.
- Optimized for High-Speed Operation: The lightweight and robust phenolic resin cage ensures stable performance and reduced centrifugal forces, contributing to the bearing's high limiting speed of 95,000 rpm.
- Precision Performance: Manufactured to P4A tolerance standards with tight dimensional control on the bore diameter, outside diameter, and width, this bearing guarantees high running accuracy and low vibration.
- Durable Construction: Components made from chrome steel for both rings and balls provide high hardness, wear resistance, and a long operational lifespan.
7002 ACD/P4ADBC Bearing Typical Application Areas
This precision duplex bearing set is critical in applications demanding high speed, rigidity, and accuracy. Key industries and machinery include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Spindles: Used in PCB drilling, dental handpieces, and other small, high-speed machinery.
- High-Frequency Motors and Turbines: Where rotational accuracy and stability are paramount.
- Robotic Arms and Precision Gearboxes: To ensure precise positioning and movement with minimal play.
