7003 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7003 CDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.038 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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 54.29
/ each
In Stock
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7003 CDGA/P4A Bearing Product Overview & Core Advantages
The 7003 CDGA/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with an extra light preload (Class A), it is engineered to provide precise axial positioning and minimize deflection under combined loads. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The bearing is pre-lubricated and features a universal matching designation (SU), allowing it to be mounted in sets of three for enhanced stiffness and load distribution.
7003 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Basic bearing series, indicating a 17mm bore, 35mm OD, and 10mm width. |
| CD | Contact angle of 15°, optimized for high-speed operation and combined loads. |
| G | Precision level designation, indicating specific internal geometry for universal matching. |
| A | Extra light preload (Class A), reducing vibration and ensuring smooth operation at high speeds. |
| P4A | Super precision tolerance class, exceeding ABEC-7 standards for exceptional running accuracy. |
7003 CDGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The 15° contact angle and P4A tolerance class provide superior axial and radial stiffness, minimizing deflection under combined loads and ensuring precise shaft positioning.
- Optimized for High-Speed Operation: The phenolic resin cage offers excellent strength-to-weight ratio, reducing centrifugal forces and enabling a limiting speed of 121,000 rpm. The standard lubrication further supports reliable high-speed performance.
- Universal Matching Capability (SU): Designed to be mounted in matched sets of three, these bearings can be arranged to achieve optimal preload and stiffness for complex applications, distributing loads evenly.
- Premium Material Construction: Manufactured from chrome steel for both rings and balls, ensuring high durability, wear resistance, and consistent performance within a temperature range of -30°C to 110°C.
7003 CDGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines requiring high precision and rigidity.
- Precision Instrumentation: Measuring devices, optical scanners, and laboratory equipment where minimal runout and vibration are critical.
- High-Speed Motors & Drives: Servo motors, turbochargers, and other high-RPM systems demanding reliable angular contact bearing performance.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and other applications requiring exceptional accuracy and reliability.
