7003 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7003 ACD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.033 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.006mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1462 lbf
Radial static load rating
698 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 85.2
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7003 ACD/HCP4A Bearing Product Overview & Core Advantages
The 7003 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This single-row bearing is designed to accommodate high combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Its P4 (ABEC-7) tolerance class ensures minimal runout and vibration, making it ideal for high-speed spindles and precision machinery. The combination of a ceramic ball material and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life.
7003 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Standard bearing series designation, indicating a metric, single-row angular contact ball bearing with a 17mm bore, 35mm OD, and 10mm width. |
| AC | Angular Contact design with a 25° contact angle, optimized for high thrust load capacity. |
| D | Indicates a high internal capacity design. |
| HC | Hybrid Ceramic, signifying the use of ceramic balls (typically Silicon Nitride, Si3N4) with steel rings. |
| P4 | Specifies the P4 tolerance class (equivalent to ABEC-7), denoting very high precision in dimensions and running accuracy. |
| A | Indicates that the bearing is supplied with a specific preload for enhanced rigidity and precise shaft positioning. |
7003 ACD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and available preload ensure minimal deflection under load, providing exceptional running accuracy and system stiffness, which is critical for machining and positioning applications.
- Superior High-Speed Performance: The hybrid ceramic design with ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces and friction, enabling a high limiting speed of 85,000 rpm. This design also reduces heat generation at high rotational velocities.
- Enhanced Load Capacity: The 25° contact angle is optimized to handle substantial one-directional thrust loads in combination with radial loads, offering a dynamic load rating of 1462 lbf and a static load rating of 698 lbf.
- Extended Service Life and Reliability: Ceramic balls are harder, lighter, and more resistant to wear and corrosion than steel balls. They also provide electrical insulation, reducing the risk of electrical erosion. The phenolic cage offers excellent strength and dimensional stability at high speeds.
7003 ACD/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications where speed, accuracy, and reliability are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling machines.
- Precision Robotics: In robotic arm joints and high-accuracy actuators.
- Aerospace and Defense Systems: Gyroscopes, navigation systems, and auxiliary power units (APUs).
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small turbine systems.
