7002 ACE/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7002 ACE/P4ADGA
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
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1550 lbf
Radial static load rating
821 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7002 ACE/P4ADGA Bearing Product Overview & Core Advantages
The 7002 ACE/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. Engineered to a P4A tolerance class, it offers superior dimensional and running accuracy. Its defining characteristic is its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. The Extra light (Class A) preload ensures minimal deflection and high system rigidity, making it ideal for high-precision, high-reliability applications where rotational accuracy is paramount.
7002 ACE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series and size designation (15mm bore, 32mm OD). |
| ACE | A: Extra light preload (Class A). C: Contact angle of 15°. E: Optimized internal design. |
| P4A | High-Precision Tolerance Class, exceeding ABEC 7 standards for enhanced running accuracy. |
| DGA | Universal Matchable (SU) designation, indicating the bearing is supplied as one of a matched pair for precise axial and radial rigidity. |
7002 ACE/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 25° contact angle and Class A preload provide high axial and radial stiffness, minimizing shaft deflection under load and ensuring precise rotational positioning.
- Superior Load Capacity: Engineered to handle combined radial and axial loads effectively. The phenolic resin cage and precision-ground chrome steel components contribute to a high dynamic load rating of 1550 lbf.
- High-Speed Capability: The lightweight and robust phenolic cage, combined with the optimized internal geometry, enables a high limiting speed of 95,000 rpm, making it a true high-speed bearing.
- Universal Matchability (SU): Supplied as one of a matched set of two bearings, allowing for simplified mounting in universal arrangements (DB, DF, DT) to achieve the required system rigidity and preload without selective assembly.
7002 ACE/P4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery requiring precision and speed, including:
- Machine Tool Spindles
- High-Frequency Electric Spindles
- Precision Grinding Equipment
- High-Speed Pumps and Compressors
- Robotic Arm Joints and Precision Gearboxes
