7003 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7003 CDGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.033 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
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1521 lbf
Radial static load rating
731 lbf
Limiting speed
121 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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
Price:
$ 61.42
/ each
In Stock
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7003 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 7003 CDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and manufactured to P4A super precision tolerance, this bearing delivers superior high-speed capability and rigidity. Its 15° contact angle is optimized for handling combined loads, making it an ideal solution for high-reliability, high-rotation accuracy systems where minimal runout and thermal stability are critical.
7003 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CDGA | Indicates a Universal Matchable (SU) bearing designed for preloaded duplex arrangements. The "A" signifies Extra Light Preload (Class A). |
| HCP4A | "HC" denotes Hybrid Ceramic construction (steel rings with ceramic balls). "P4A" specifies a super precision tolerance class exceeding ABEC 7 standards. |
7003 CDGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables higher limiting speeds compared to all-steel bearings. This construction also provides inherent electrical insulation and superior corrosion resistance.
- High Rigidity & Precision: Manufactured to P4A tolerance class with extremely tight dimensional runouts, this bearing ensures exceptional rotational accuracy and system stiffness, which is critical for minimizing vibration and maintaining positioning precision.
- Optimized High-Speed Performance: The combination of ceramic balls and a lightweight phenolic resin cage allows for a very high limiting speed of 121,000 rpm, making it suitable for ultra-high-speed spindles.
- Universal Matching & Preload: As a Universal Matchable (SU) bearing supplied with Extra Light Preload (Class A), it can be mounted in duplex pairs (back-to-back, face-to-face, or tandem) without selective matching, simplifying installation and ensuring consistent preload performance.
7003 CDGA/HCP4A Bearing Typical Application Areas
- High-Frequency CNC Spindles for precision machining centers
- High-Speed Grinding Spindles
- Precision Instrumentation and measuring equipment
- Semiconductor Manufacturing Equipment
- High-Speed Dental Handpieces
- Aerospace Gyroscopes and navigation systems
