7003 CDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7003 CDGB/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
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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7003 CDGB/P4A Bearing Product Overview & Core Advantages
The 7003 CDGB/P4A is a single-row angular contact ball bearing engineered for high-precision applications demanding exceptional rotational accuracy and rigidity. Positioned in the P4A tolerance class, it delivers superior dimensional and running accuracy. Its 15° contact angle is optimized to handle significant combined loads (radial and axial) simultaneously. The phenolic cage and universal matching designation (SU) enable high-speed operation and simplified preloaded bearing arrangements, making it an ideal choice for machine tool spindles and other precision machinery.
7003 CDGB/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. |
| C | 15° contact angle, optimized for high-speed performance and combined load capacity. |
| DGB | Universal Matchable bearing. Can be paired in any combination (face-to-face, back-to-back, or tandem) to form a preloaded set. |
| P4A | High-Precision Tolerance Class. Exceeds ABEC-7 standards, ensuring minimal runout and vibration for ultra-precise applications. |
7003 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and robust construction provide high rigidity, effectively supporting combined radial and axial loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 121,000 rpm. The 15° contact angle further minimizes heat generation at high speeds.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore, outside diameter, and width, ensuring predictable performance and ease of installation in precision assemblies.
- Universal Matching (SU): Bearings are manufactured to universal matching standards, allowing them to be supplied in preloaded sets (typically sets of 2 or 3) without selective matching, simplifying procurement and assembly.
- Optimized Material Selection: The use of high-grade chrome steel for rings and balls ensures long-term durability and wear resistance.
7003 CDGB/P4A Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications where precision, speed, and rigidity are paramount.
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Handpieces
- Aerospace Control Systems
