7003 ACE/HCP4AH
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7003 ACE/HCP4AH
Basic Information
System of measurement
Metric
Weight
0.03 kg
Tolerance class
P4A
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
-0.004mm 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°C to 110 °C
Radial dynamic load rating
1258 lbf
Radial static load rating
551 lbf
Limiting speed
103 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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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7003 ACE/HCP4AH Bearing Product Overview & Core Advantages
The 7003 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is distinguished by its P4A super-precision tolerance class and is supplied as a preloaded set of three matched bearings, ensuring optimal rigidity and rotational accuracy. Its 25° contact angle is optimized to handle significant combined loads, including high radial and one-directional axial loads simultaneously. The use of a phenolic resin cage and ceramic balls contributes to its outstanding high-speed capabilities, low friction, and extended service life, making it an ideal choice for ultra-precise spindles and machinery.
7003 ACE/HCP4AH Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Standard bearing series designation, indicating a 17mm bore, 35mm OD, and 10mm width. |
| ACE | Signifies a 25° contact angle and a non-filling slot design, optimized for high-speed operation and precise axial load capacity. |
| HC | Indicates the use of Hybrid Ceramic components, specifically ceramic balls, which reduce weight, friction, and heat generation. |
| P4A | Denotes an ABEC 7 / ISO P4A super-precision tolerance class, ensuring extremely tight dimensional and running accuracy for the highest performance applications. |
7003 ACE/HCP4AH Bearing Structural Features & Performance Benefits
- Super-Precision & High Rigidity: Manufactured to P4A tolerance standards and supplied as a preloaded matched set, this bearing delivers exceptional running accuracy and system stiffness, minimizing deflection under load.
- High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls significantly reduces centrifugal forces, enabling a very high limiting speed of 103,000 rpm.
- Advanced Load Capacity: The 25° contact angle is engineered to efficiently support combined radial and axial loads, providing reliable performance in complex loading conditions.
- Hybrid Ceramic Advantages: Ceramic balls offer superior characteristics including electrical insulation, reduced thermal expansion, and longer service life due to their hardness and corrosion resistance.
- Pre-Lubrication: The bearing comes pre-lubricated, ensuring immediate readiness for operation and reliable performance within its specified temperature range.
7003 ACE/HCP4AH Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for applications where extreme accuracy, high speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical & Dental Equipment: High-speed handpieces and scanners.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation instruments.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
