7003 FEGA/HCP4AH
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7003 FEGA/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
18 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1287 lbf
Radial static load rating
574 lbf
Limiting speed
103 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7003 FEGA/HCP4AH Bearing Product Overview & Core Advantages
The 7003 FEGA/HCP4AH is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to accommodate combined loads (radial and axial loads simultaneously), this bearing features a single-row design with a 18° contact angle and is supplied as a universally matchable set of two bearings. Its core advantages include superior high-speed capability, enabled by a phenolic cage and ceramic balls, and extra light preload (Class A) for minimal friction and precise operation in high-precision spindles and other critical machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Standard bearing series designation, indicating a 17mm bore, 35mm OD, and 10mm width. |
| FE | Indicates a phenolic (resin) cage, which is lightweight and suitable for high-speed operation. |
| GA | Signifies universal matchable bearings. Two bearings can be paired in any combination to achieve a specific preload or rigidity. |
| HC | Denotes the use of hybrid ceramic balls (silicon nitride), offering reduced weight, higher stiffness, and superior performance at high speeds. |
| P4A | Specifies a high-precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
7003 FEGA/HCP4AH Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, making it an ideal high-speed bearing.
- Phenolic Cage (FE): This lightweight cage provides excellent dimensional stability and low friction at high rotational speeds, contributing directly to the high limiting speed of 103,000 rpm.
- High-Precision Design (P4A): Manufactured to ultra-precise tolerance class P4A, this bearing ensures minimal runout and vibration, which is critical for applications requiring extreme accuracy.
- Optimized Load Capacity: The 18° contact angle is optimized to handle significant combined loads, providing robust support for both radial and axial forces.
- Universal Matching (GA): This feature allows for flexible mounting arrangements. By pairing two bearings, engineers can achieve the exact preload and rigidity required for their specific application without selective sorting.
7003 FEGA/HCP4AH Bearing Typical Application Areas
The 7003 FEGA/HCP4AH is engineered for the most demanding high-speed and high-precision applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Spindles: PCB drilling and routing spindles.
- Robotics: High-accuracy joints and actuators.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and other critical components.
