7002 ACD/HCP4AH
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7002 ACD/HCP4AH
Basic Information
System of measurement
Metric
Weight
0.027 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
9 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
1112 lbf
Radial static load rating
522 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7002 ACD/HCP4AH Bearing Product Overview & Core Advantages
The 7002 ACD/HCP4AH is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined radial and axial loads simultaneously, this bearing features a 25° contact angle for optimal thrust capacity. Its P4A super-precision tolerance and ceramic ball construction ensure superior running accuracy, high-speed capability, and extended service life, making it an ideal choice for high-reliability machinery.
7002 ACD/HCP4AH Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle. |
| H | Indicates a set of two bearings supplied as a matched pair for preload. |
| C | Refers to the ceramic (Si3N4) ball material. |
| P4A | Denotes a super-precision tolerance class, exceeding ABEC 7 standards. |
7002 ACD/HCP4AH Bearing Structural Features & Performance Benefits
- High-Speed Performance: The combination of ceramic balls and a lightweight phenolic resin cage significantly reduces centrifugal forces, enabling a high limiting speed of 95,000 rpm.
- Rigidity & Load Capacity: The 25° contact angle and preloaded matched set configuration provide high system rigidity and excellent capacity for combined loads.
- Thermal Stability & Long Life: Ceramic balls have a lower coefficient of thermal expansion than steel, reducing preload variation with temperature changes. They are also non-conductive and highly corrosion-resistant.
- Precision Operation: The P4A tolerance class ensures minimal runout and vibration, which is critical for applications requiring extreme positional accuracy and smooth rotation.
7002 ACD/HCP4AH Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In robotic arm joints and actuators requiring high accuracy and stiffness.
- High-Frequency Spindles: Used in PCB drilling and dental drill handpieces.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and other critical instrumentation.
